1. A
   Most of the space in the atom is empty.
2. B
   The radius of the atom is about $10^5$ times the radius of the nucleus.
3. C
   Electrons move in a circular path of fixed energy called orbits.
4. D
   Nearly all the mass of the atom resides in the nucleus.

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1. A
   Displacement reaction.
2. B
   Endothermic reaction.
3. C
   Decomposition reaction.
4. D
   Exothermic reaction.

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1. A
   Wood
2. B
   Nuclear reactor
3. C
   Gobar gas
4. D
   Coal

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1. A
   particular frequencies of the starlight.
2. B
   reflection of starlight from the oceanic surface.
3. C
   atmospheric refraction of starlight.
4. D
   magnetic field of Earth.

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1. A
   dB
2. B
   $s^{-1}$
3. C
   Hz
4. D
   $min^{-1}$

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1. A
   equal.
2. B
   far apart.
3. C
   multiples of each other.
4. D
   nearly same.

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1. A
   Speed
2. B
   Direction
3. C
   Brightness
4. D
   Frequency

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1. A
   Force acting is directly proportional to the displacement from the mean position and is in same direction.
2. B
   Force acting is directly proportional to the displacement from the mean position and is in opposite direction.
3. C
   Acceleration of the oscillator is constant.
4. D
   The velocity of the oscillator is not periodic.

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1. A
   Radicle.
2. B
   Plumule.
3. C
   Cotyledon.
4. D
   Epicotyl.

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1. A
   Style, Stigma, Ovary
2. B
   Stigma, Style, Ovary
3. C
   Pistil, Stigma, Ovary
4. D
   Ovary, Pistil, Style

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1. A
   The RBC will shrink.
2. B
   The RBC will swell and become turgid.
3. C
   The RBC will swell and burst.
4. D
   The RBC will lyse.

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1. A
   black gram and wheat.
2. B
   rice and mustard.
3. C
   vegetables and fruits.
4. D
   soya bean and milk.

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1. A
   reflect back.
2. B
   go straight.
3. C
   turn towards right.
4. D
   bend at 45°.

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1. A
   only dispersion of light.
2. B
   only reflection of light.
3. C
   only total internal reflection of light.
4. D
   both refraction and total internal reflection of light.

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1. A
   Bleaching powder
2. B
   Baking soda
3. C
   Plaster of Paris
4. D
   Washing soda

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1. A
   Lothal
2. B
   Balakot
3. C
   Amri
4. D
   Kot Diji

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1. A
   Honouring the king
2. B
   Tolerance of religions other than one's own
3. C
   Respecting Brahmanas
4. D
   Promoting the welfare of his subjects

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1. A
   1 only
2. B
   2 only
3. C
   Both 1 and 2
4. D
   Neither 1 nor 2

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1. A
   Chidambaram
2. B
   Thanjavur
3. C
   Gangaikonda Cholapuram
4. D
   Naneghat

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1. A
   1 only
2. B
   2 only
3. C
   Both 1 and 2
4. D
   Neither 1 nor 2

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1. A
   Pilgrimage to the tombs of sufi saints
2. B
   The practice of revenue farming
3. C
   The death anniversary of a sufi shaikh
4. D
   A form of Islamic divorce

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1. A
   Starfish.
2. B
   Blue whale.
3. C
   Octopus.
4. D
   Sea horse.

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1. A
   River Manas
2. B
   River Kameng
3. C
   River Mahananda
4. D
   River Subansiri

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1. A
   Cocos Plate
2. B
   Nazca Plate
3. C
   Caroline Plate
4. D
   Antarctic Plate

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1. A
   1 only
2. B
   2 and 3 only
3. C
   1 and 3 only
4. D
   1, 2 and 3

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