Wednesday 4 July 2018

Multidimensional Publications and Research Society INTRODUCTION TO NANOTECHNOLOGY Choose Appropriate Alternative


            Multidimensional Publications and Research Society  
  INTRODUCTION TO NANOTECHNOLOGY
Qn.No.1,  10 nm = _____ m ?
[a] 10-8                                                     [b] 10-7
[c] 10-9                                                     [d] 10-10

Qn.No.2, The size of nanoparticles is between _____ nm?
[a] 100 to 1000                                        [b] 0.1 to 10
[c] 1 to 100                                              [d] 0.01 to 1

Qn.No.3,  The diameter of hydrogen atom is...?
[a] 1                                                         [b] 10
[c] 0.1                                                      [d] 0.01

Qn.No.4,  Carbon atoms make ____ type of bond with other carbon atoms?
[a] Covalent                                             [b] Ionic
[c] Metallic                                              [d] Hydrogen

Qn.No.5,  Fullerene or bucky ball is made up of ____ carbon atoms?
[a] 100                                                     [b] 20
[c] 75                                                       [d] 60

Qn.No.6,  The thermal conductivity of a standard SWNT along its length is ____ watt/(m.K)?
[a] 3500                                                   [b] 385
[c] 35000                                                 [d] 35

Qn.No.7, 1 m = _____ nm?
[a] 10-9                                                     [b] 10-8
[c] 109                                                      [d] 108

Qn.No.8, "There is plenty of room at the bottom." This was stated by _____?
[a] Eric drexler                                        [b] Richard feynmann
[c] Harold croto                                       [d] Richard smalley

Qn.No.9,  Who coined the word 'nanotechnology'?
[a] Eric drexler                                        [b] Richard feynmann
[c] Sumio tijima                                       [d] Richard smalley

Qn.No.10,  According to the definition by CRN, nanotechnology is...?
[a] Mechanical engineering                     [b] Atomic engineering
[c] Newtonian mechanics                        [d] Micro-electronics

Qn.No.11, Nanoscience can be studied with the help of...?
[a] Quantum mechanics                           [b] Newtonian mechanics
[c] Macro-dynamics                                [d] Geophysics

Qn.No.12,  Greeks and Romans had used nanoparticles in the manufacture of...?
[a] Cosmetics for eyes                             [b] Medicines
[c] Metal articles                                      [d] Hair-dye

Qn.No.13,  Egyptians were using ____ to prepare make-up for eyes?
[a] Nanoaluminium                                  [b] Nanocopper
[c] Nanosteel                                           [d] Nanolead

Qn.No.14,  The sword of Tipu Sultan was made of...?
[a] Nanolead                                            [b] Nanoaluminium
[c] Namascus steel                                   [d] Pure iron

Qn.No.15,  ____ contains nanoparticles prepared by using biologically processed metal ores?
[a] Homeopathic medicines                     [b] Modern antibiotics
[c] Ayurvedic 'bhasmas'                          [d] Modern cosmetics

Qn.No.16,  Who was the first scientist to describe that substances having nanodimensions possess altogether different and unique properties?
[a] Richard feynmann                             [b] Eric drexler
[c] Archimedes                                        [d] Michael faraday

Qn.No.17, Which of the following does not apply to nanotechnology?
[a] It is a general-purpose technology.        [b] It can be called green technology.
[c] Newtonian mechanics can describe it. [d] It involves rearrangement of atoms.

Qn.No.18,  The diameter of human hair is ____ nm?
[a] 50,000                                                [b] 75,000
[c] 90,000                                                [d] 1,00,000

Qn.No.19,  The diameter of human hair is ____ m?
[a] 5 x 10-8                                               [b] 5 x 10-7
[c] 5 x 10-6                                               [d] 5 x 10-5

Qn.No.20,  The cut-off limit of human eye is ____ nm?
[a] 2,000                                                  [b] 5,000
[c] 10,000                                                [d] 50,000

Qn.No.21,  The size of E.Coli bacteria is ____ nm?
[a] 2,000                                                  [b] 5,000
[c] 50                                                       [d] 90

Qn.No.22,  The size of RBC is ____ nm?
[a] 50                                                       [b] 90
[c] 2,000                                                  [d] 5,000

Qn.No.23,  The thickness of a transistor is ____ nm?
[a] 50                                                       [b] 90
[c] 2,000                                                  [d] 5,000

Qn.No.24,  The size of a virus is ____ nm?
[a] 2                                                         [b] 20
[c] 50                                                       [d] 2000

Qn.No.25,  The diameter of a bucky ball is ____ nm?
[a] 1,000                                                  [b] 100
[c] 10                                                       [d] 1

Qn.No.26,  The width of a typical DNA molecule is ____ nm?
[a] 1                                                         [b] 2
[c] 5                                                         [d] 10

Qn.No. 27, 1 micrometer (micron) = ______ m?
[a] 10-9                                                     [b] 10-8
[c] 10-7                                                     [d] 10-6

Qn.No.28,  1 micrometer (micron) = ______ nm?
[a] 1,000                                                  [b] 100
[c] 10                                                       [d] 0.01

Qn.No.29,  The full form of STM is...?
[a] Scanning tunneling microscope         [b] Scientific technical microscope
[c] Systematic technical microscope       [d] Super tensile microscope

Qn.No.30,  What does 'F' stand for in AFM?
[a] Fine                                                    [b] Front
[c] Force                                                  [d] Flux

Qn.No.31, Which ratio decides the efficiency of nanosubstances?
[a] Weight/volume                                   [b] Surface area/volume
[c] Volume/weight                                  [d] Pressure/volume

Qn.No. 32, The surface area to volume ratio of a sphere with radius 1 cm is R1 and that of a sphere with radius 5 cm is R2. Then R1 = ____ R2?
[a] 3                                                         [b] 1/3
[c] 5                                                          [d] 1/5

Qn.No.33,  The surface area to volume ratio of a cube with side 1 unit is R1 and that of a cube with side 10 units is R2. Then R2 = ____ R1?
[a] 1/10                                                    [b] 10
[c] 1/100                                                  [d] 100

Qn.No. 34, The two important properties of nanosubstances are...?
[a] Pressure and friction                          [b] Sticking and friction
[c] Sticking and temperature                   [d] Temperature and friction

Qn.No.35,  With the help of _____, Robert F. Curl and others discovered fullerene.
[a] Electron microscope                           [b] Magnetic resonance
[c] Condensation technique                    [d] Mass spectrograph

Qn.No.36,  In the structure of fullerene each carbon atom forms covalent bonds with ____ other carbon atoms?
[a] One                                                    [b] Two
[c] Three                                                  [d] Four

Qn.No.37,  Who had invented the famous 'Geodesic' dome structure?
[a] Eric drexler                                        [b] Buckminster fuller
[c] Richard smalley                                 [d] Faraday

Qn.No.38,  The largest cluster of carbon atoms in Bucky balls known till today consists of ____ carbon atoms?
[a] 60                                                       [b] 75
[c] 180                                                     [d] 540

Qn.No.39,  The smallest cluster of carbon atoms in Bucky balls known till today consists of ____ carbon atoms?
[a] 75                                                       [b] 60
[c] 20                                                       [d] 15

Qn.No.40,  The tensile strength of an MWNT is ____ Pa?
[a] 63 x 106                                              [b] 63 x 107
[c] 63 x 108                                              [d] 63 x 109

Qn.No.41,  The compressive strength of a nanotube _____ its tensile strength?
[a] Is less than                                         [b] Is greater than
[c] Is equal to                                          [d] May be greater than

Qn.No.42, The hardness of a standard SWNT is ____ Pa?
[a] 63 x 106                                              [b] 25 x 106
[c] 25 x 109                                              [d] 25 x 10-9

Qn.No.43, The bulk modulus of a standard SWNT is ____ that of diamond?
[a] Less than                                            [b] Greater than
[c] Equal to                                              [d] Less than or equal to

Qn.No.44,  How much current can be passed through 1 cm2 cross-section of a metal nanotube?
[a] 10-9 a                                                  [b] 109 a
[c] 1000 a                                                [d] 0.001 a

Qn.No.45,  The electrical conductivity of a nanotube is ____ times that of copper?
[a] 10                                                       [b] 100
[c] 1000                                                   [d] 1/100

Qn.No.46,  An MWNT possesses electrical superconductivity up to temperature of...?
[a] 12 k                                                    [b] 12°c
[c] 100 k                                                  [d] 100°

Qn.No.47, At room temperature, the thermal conductivity of a copper wire is ____ watt/(m.K)?
[a] 3500                                                   [b] 350
[c] 385                                                     [d] 38.5

Qn.No.48,  In radial direction, the thermal conductivity of a nanotube is ____ watt/(m.K)?
[a] 3500                                                   [b] 385
[c] 350                                                     [d] 0

Qn.No.49, The thermal stability of a nanotube is seen up to ____ K in vacuum?
[a] 100                                                     [b] 1000
[c] 2200                                                    [d] 3100

Qn.No.50,  The thermal conductivity of an SWNT along length is ____ watt/(m.K)?
[a] 35                                                       [b] 350
[c] 385                                                     [d] 3500

Qn.No.51,  The size of a quantum dot is ____ nm?
[a] 5                                                         [b] 10
[c] 50                                                       [d] 100

Qn.No.52,  The wavelength of visible light is ____ nm?
[a] 40-70                                                  [b] 400-700
[c] 4000-7000                                          [d] 40000-70000

Qn.No.53,  The capacity of a normal human eye to see the smallest object is ____ μm?
[a] 10000                                                 [b] 1000
[c] 100                                                     [d] 10

Qn.No.54,  The width of a carbon nanotube is ____ nm?
[a] 1                                                         [b] 1.3
[c] 2.5                                                      [d] 10

Qn.No.55,  The thermal stability of a nanotube is seen up to ____ K in air?
[a] 100                                                     [b] 1000
[c] 2000                                                   [d] 3100

Qn.No.56,  Nanoparticles of which substance were found on the surface of the sword of Tipu Sultan?
[a] Gold                                                   [b] Lead
[c] Carbon                                               [d] Silicon

Qn.No.57,  Nano particles of which atom are used to control collateral damage due to explosion?
[a] Copper                                               [b] Aluminium
[c] Carbon                                               [d] Lead

Qn.No.58,  Who prepared and explained nanotubes for the first time?
[a] Sumio tijima                                       [b] Richard smalley
[c] Eric drexler                                        [d] Richard feynmann

Qn.No.59,  Which of the following statement/s is are true?
                                            i.Volume to surface area ratio is very large for nanomaterials.
                                          ii.The cut-off limit of human eye is 10-5 m.
                                        iii.Hardness of a SWNT is about 63 x 109 Pa.
                                        iv.Carbon nanotubes are cylindrical fullerenes.

[a] all four                                                [b] (ii) and (iv)
[c] (i), (ii) and (iv)                                    [d] (ii), (iii) and (iv)

Qn.No.60,  Match the objects in Part A with their size in Part B.

[a] 1-a, 2-c, 3-d, 4-b                 [b] 1-b, 2-a, 3-c, 4-d
[c] 1-a, 2-d, 3-b, 4-c                 [d] 1-c, 2-d, 3-b, 4-a

Qn.No.61,  Match the items in Part A with appropriate alternative in Part B. 

[a] 1-c, 2-d, 3-a                                        [b] 1-c, 2-b, 3-a
[c] 1-c, 2-a, 3-b                                        [d] 1-a, 2-b, 3-d

Qn.No.62,  The suffix '-ene' in the name of fullerene shows the presence of _____ in the molecule?
[a] one triple bond                                   [b] one double bond
[c] two single bonds                                               [d] two triple bonds


Qn.No.63,  1 nanometre= _______ cm ?

a) 10(-9)                                                             b) 10(-8)
c) 10(-7)                                                             d) 10(-6)
Qn.No.64,  The most important property of nanomaterials is ?

a) Force                                                                       b) friction
c) Pressure                                                                   d) temperature
Qn.No.65,  The diameter of a bucky ball is about ______?

a) 1 Ao                                                                         b) 100 Ao
c)1 nm                                                                         d) 10 nm
Qn.No.66,  A bucky ball is a molecule consisting of ___ carbon atoms ?

a)50                                                                             b) 60
c) 75                                                                            d) 100
Qn.No.67,  The size of a quantum dot is ______ m?

a)5                                                                               b) 5 x 10(-9)
c) 5 x 10(-10)                                                                 d) 5 x 10(-11)
Qn.No.68, 20 micron = ______ nm ?

a)20 x 10(-9)                                                                  b) 20 x 109
c) 200                                                                          d) 20000
Qn.No.69,  1 mm = ______ nm ?

a) 106                                                                           b) 10(-6)
c) 107                                                                           d) 10(-7)
Qn.No.70,  The hardest material found in nature is ______?

a) Steel                                                                        b) topaz
c) Diamond                                                                 d) quartz
Qn.No.71, ______ are the extentions of bucky balls ?

a)Geodesic domes                                                       b) Hexagons
c) Carbon nanotubes                                                   d) AFM and STM
Qn.No.72, Nanotechnology, in other words, is ?

a)Carbon engineering                                                  b) Atomic engineering
c) Small technology                                                    d) Microphysics
Qn.No.73,  The tensile strength of a carbon nanotube is _____ times that of steel ?

a)10                                                                             b) 25
c)100                                                                           d)1000
Qn.No.74,  The ratio of thermal conductivity of silver to that of a carbon nanotube is _____?

a)100 : 1                                                                      b)1 : 100
c) 10 : 1                                                                       d)1 : 10
Qn.No.75,  In a bucky ball, each carbon atom is bound to _____ adjacent carbon atoms?

a) 1                                                                              b) 2
c) 3                                                                              d) 4
Qn.No.76,  The size of red and white blood cells is in the range of _____μm ?

a) 2-5                                                                           b) 5-7
c) 7-10                                                                         d) 10-15
Qn.No.77,   Which of the following is an example of top-down approach for the preparation of nanomaterials?
a) Gas phase agglomeration                                                    b) Molecular self-assembly
c) Mechanical grinding                                                         d) Molecular beam epitaxy
Qn.No.78,  Which of the following is an example of bottom-up approach for the preparation of nanomaterials?
a) Etching                                                                                b) Dip pen nano-lithography
c) Lithography                                                                                    d) Erosion
Qn.No.79,  The properties like melting point, solubility, color, etc changes on varying the ?
a) Size                                                                                    
b) Composition
c) Surface properties                                                               d) None of the mentioned

Qn.No.80, The properties like dispersibility, conductivity, etc changes on varying the ?
a) Size                                                                                     b) Composition
c) Surface properties                                                             d) None of the mentioned
Qn.No.81,  Quantum confinement results in ?
a) Energy gap in semiconductor is proportional to the inverse of the square root of size
b) Energy gap in semiconductor is proportional to the inverse of the size
c) Energy gap in semiconductor is proportional to the square of size
d) Energy gap in semiconductor is proportional to the inverse of the square of size
Qn.No.82,  Which of the following is the principal factor which causes the properties of nanomaterials to differ significantly from other materials?
a) Size distribution                                                                  b) Specific surface feature
c) Quantum size effects                                                          d) All the mentioned
Qn.No.83,  Select the incorrect statement from the following options ?
a) Self-assembly is a top-down manufacturing technique
b) In self-assembly, weak interactions play very important role
c) Self-assembling molecules adopt a organised structure which is thermodynamically more stable than the single, unassembled components
d) Compared to the isolated components, the self-assembled structure has a higher order
Qn.No.84,  Which of the following is the application of nanotechnology to food science and technology?
a) Agriculture                                                                          b) Food safety and biosecurity
c) Product development                                                          d) All of the mentioned
Qn.No.85,  What are the advantages of nano-composite packages?
a) Lighter and biodegradable                                                  b) Enhanced thermal stability, conductivity and mechanical strength
c) Gas barrier properties                                                          d) All of the mentioned
Qn .No.86,  The prefix "nano" comes from a ...?
a) French word meaning billion                                              b) Greek word meaning dwarf
c) Spanish word meaning particle                                           d) Latin word meaning invisible
Qn .No.87,  Who first used the term nanotechnology and when?
a) Richard Feynman, 1959                                                      b) Norio Taniguchi, 1974
c) Eric Drexler, 1986                                                               d) Sumio Iijima, 1991
Qn .No.88,  What is a buckyball?
a) A carbon molecule (C60)                                                    b) Nickname for Mercedes-Benz's futuristic concept car (C111)
c) Plastic explosives nanoparticle (C4)                                   d) Concrete nanoparticle with a compressive strength of 20 nanonewtons (C20)
Qn .No.89,  Which of these historical works of art contain nanotechnology?
a) Lycurgus cup                                                                      b) Medieval stained glass windows in churches
c) Damascus steel swords                                                       d) All of the above
Qn .No.90,  Richard Feynman is often credited with predicting the potential of nanotechnology. What was    the title of his famous speech given on December 29, 1959?
a) There is a tiny room at the bottom                                      b) Things get nanoscopic at the bottom
c) Bottom? What bottom?                                                      d)There is plenty of room at the bottom
Qn .No.91, How many oxygen atoms lined up in a row would fit in a one nanometer space?
a) None; an oxygen atom is bigger than 1 nm                        b) One
c) Seven                                                                                  d) Seventy
Qn .No.92,  Which one of these statements is NOT true?
a)Gold at the nanoscale is red                                                 d)Copper at the nanoscale is transparent
c)Silicon at the nanoscale is an insulator                                 d)Aluminum at the nanoscale is highly combustible
Qn .No.93,Which of these consumer products is already being made using nanotechnology methods?
a) Fishing lure                                                                         b)Golf ball
c) Sunscreen lotion                                                                  d) All of the above
Qn .No.94,  If you were to shrink yourself down until you were only a nanometer tall, how thick would a sheet of paper appear to you?
a) 170 meters                                                                           b) 1.7 kilometers (a bit more than a mile)
c) 17 kilometers                                                                       d)170 kilometers
Qn .No. 95, What is graphene?
a) A new material made from carbon nanotubes                    b) A one-atom thick sheet of carbon
c) Thin film made from fullerenes                                          d) A software tool to measure and graphically represent nanoparticles
Qn .No. 96, Which of these well-known phrases from Star Trek depends on the (fictional) use of nanotechnology?
a) Beam me up, Scotty!                                                          b)Tea. Earl Grey. Hot.
c) You will be assimilated. Resistance is futile.                      d)All of the above
Qn .No. 97, What is grey goo?
a) A hypothetical substance composed of out-of-control self-replicating nanobots that consumes all living matter on Earth
b) The feeder material used to grow grey nanoparticles in the laboratory
c) Toxic byproduct resulting from the synthesis of carbon nanotubes
d) Waste product from the production of nanoglue made from the membranes on the feet of the Madagascan Grey Gecko
Qn .No. 98, Which one of these condiments is unique due to the nanoscale interactions between its ingredients?
a) Ketchup                                                                              b)Mustard
c)Mayonnaise                                                                          d) All of the above
Qn .No.99, Nanorobots (nanobots)...?
a) Do not exist yet
b) Exist in experimental form in laboratories
c) Are already used in nanomedicine to remove plaque from the walls of arteries
d) Will be used by NASA in the next unmanned mission to Mars
Qn .No. 100,What is the 2017 budget for the U.S. National Nanotechnology Initiative?
a) $587 million                                                                        b) $917 million
c)$1.4 billion                                                                           d)$2.1 billion
Qn .No.101, Plasmonics is...?
a) A field of nanophotonics that holds the promise of molecular-size optical device technology
b) The science of fluorescent nanoparticles used in modern fireworks
c) A hypothetical science used in science fiction weaponry (plasma cannons)
d) The technology used to design and build the laser-guided photonic gyroscopes used in aviation.
Qn .No.102, Optical tweezers...?
a) Are used to remove facial hair with miniaturized laser beams
b) Use light to manipulate particles as small as a single atom
c) Are a nanotechnology-based tool for stamp collectors
d) Don't exist
Qn .No. 103, A silver coin with a diameter of 4 cm (such as the U.S. silver dollar) contains 26.96 grams of coin silver and has a surface area of about 27.7 square cm. If the same 26.96 grams of coin silver were divided into particles 1 nanometer in diameter, what would their combined surface area be?
a) 11.4 square meters                                                                          b) 140 square meters
c) 1,400 square meters                                                                        d) 11,400 square meters
Qn .No. 104, And what exactly is a quantum dot?
a) A semiconductor nanostructure that confines the motion of conduction band electrons, valence band holes, or excitons in all three spatial directions.
b) The sharpest possible tip of an Atomic Force Microscope
c) A fictional term used in science fiction for the endpoints of wormholes
d) Unexplained spots that appear in electron microscopy images of nanostructures smaller than 1 nanometer
Qn .No. 105,  1 m = _____ nm?
a) 10-9                                                             b) 10-8
c) 109                                                              d) 108
Qn .No. 106, A cube of side “S” has a volume ?
d) 3S                                                               b) 3S²
c) S³                                                                 d) 6S³
Qn .No.107,  20 micron is =_______ nm?
a) 20 x 10(-9)                                                  b) 20 x 109
 c)  200                                                            d) 20000
Qn .No.108,  The most important property of nonmaterial is ?
a) Force                                                           b)  Friction
c) Pressure                                                       d) Temperature
Qn.No. 109, 1 nanometre= _______ cm ?
a) 10(-9)                                                          b) 10(-8)
c) 10(-7)                                                          d) 10(-6)
Qn.No.110,  The diameter of a bucky ball is about ______ ?
a) 1 Ao                                                            b) 100 Ao
c) 1 nm                                                            d) 10 nm
Qn.No.111, The cut-off limit of human eye to see is _____ nm ?
a) 10                                                                b) 100
c) 1000                                                            d) 10000
Qn.No. 112, 1 meter = ______ nm ?
a) 109                                                              b) 10(-9)
c) 1010                                                            d) 10(-10)
Qn.No.113,  The width of carbon nanotube is ______nm ?
a) 1                                                                  b) 1.3
c) 1.55                                                             d) 10
Qn.No.114,  Who is generally credited with the first serious scientific claim that manufacturing on the molecular or even the atomic scale was possible? The claim was made at California Technical Institute and was called, "There's Plenty of Room at the Bottom".
a) Richard P. Feynman                                           
b) Ed Regis
c) K. Eric Drexler                                                        d) Ralph Merkle

Qn.No.115,  In 1986, Dr. K. Eric Drexler published a book for the layman that gave a wide overview of the potential applications of molecular nanotechnology in such areas as computing, medicine, space science, and the military. What was the name of this ground-breaking book?
a) Smaller is Better                                                      b) Engines of Creation
c) A Crowded Blueprint                                             d) The Atomic Cookbook

Qn.No.116,  A particular molecule of carbon made up of sixty carbon atoms has received some press as a structure that shows promise as a basic building block in the area of molecular manufacturing. What is the whimsical nontechnical name for these molecules?
a) Fullerrods                                                                b) Nanonodes
c) Buckyballs                                                             d) Nanocubes

Qn.No.117,  What is the general name for the class of structures made of rolled up carbon lattices?
a) Nanorods                                                                b) Nanotubes
c) Nanosheets                                                              d) Fullerrods

Qn.No.118,  Nano, as a prefix, denotes what order of magnitude?
a) 10^-6                                                                       b) 10^-3
c) 10^-12                                                                     d) 10^-9

Qn.No.119,  What is the term used in the field of nanotechnology to describe an as-yet theoretical device that "will be able to bond atoms together in virtually any stable pattern?"
a) Stacker                                                                    b) Replicator
c) Assembler                                                              d) Constructor

Qn.No.120,  In discussions of the potential of molecular nanotechnology, the possibility has been posited that badly or maliciously designed self-assembling structures could get out of control, and destroy or disassemble all structures they encounter in their blind quest to replicate. What is the term for such a structure or group of structures?
a) Blue goo                                                                  b) Green Goo
c) Red goo                                                                  d) Gray goo

Qn.No.121,  Scientists discussing the potential of molecular nanotechnology realized the possibility that self-assembling molecular constructs could conceivably get out of control and destroy just about anything. This led to the concept that other constructs could be designed to neutralize and/or destroy the rogue substances before they got out of hand. By what colorful term are these theoretical "antibody" substances collectively known?
a) Gray goo                                                                 b) Green goo
c) Red goo                                                                  d) Blue goo

Qn.No.122,  Many challenges exist to be overcome before molecular manufacturing can truly reach maturity as an applied science. Which of the following is such a challenge when designing molecular machinery?
a) Thermal noise                                                          b) Complexity of design
c) Quantum fluctuation                                               d) All of these

Qn.No.123,  As of public record at the end of 2002, which country was making the greatest annual investment in molecular nanotechnology research?
a) Russia                                                                      b) United States
c) Japan                                                                      d) South Korea

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Principles of Biochemistry

 #बहुआयामी राजनीतिक पार्टी का #पता क्या है #पंजीकृत #कार्यालय कहां है बहुआयामी राजनीतिक पार्टी का #कांटेक्ट #संपर्कसूत्र नंबर क्या है पार्टी...