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1. A
   Hydrogen bonds are present in liquid water.
2. B
   Water has a high boiling point.
3. C
   Water has a high heat of fusion.
4. D
   Water is a non-polar molecule.

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1. A
   Caesium
2. B
   Potassium
3. C
   Calcium
4. D
   Magnesium

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1. A
   depends on its initial velocity.
2. B
   is independent of its initial velocity.
3. C
   increases linearly with time.
4. D
   depends on its initial displacement.

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1. A
   The disc
2. B
   The sphere
3. C
   Both have the same moment of inertia
4. D
   The information provided is not sufficient to answer the question

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1. A
   6, 2
2. B
   3, 5
3. C
   12, 4
4. D
   9, 3

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1. A
   is 0.
2. B
   is 50 km/hr.
3. C
   is 25 km/hr.
4. D
   cannot be calculated without knowing acceleration.

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1. A
   Ohm's law.
2. B
   Conservation of charge.
3. C
   Conservation of momentum.
4. D
   Conservation of energy.

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1. A
   0·50 mm
2. B
   29·07 cm
3. C
   0·925 m
4. D
   910 mm

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1. A
   Change in internal energy of the system is equal to flow of heat in or out of the system.
2. B
   Change in internal energy of the system is less than heat transferred.
3. C
   Change in internal energy of the system is more than the heat flow.
4. D
   Cannot be determined.

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1. A
   $\frac{15}{8}$ ohm
2. B
   $\frac{15}{7}$ ohm
3. C
   15 ohm
4. D
   $\frac{17}{3}$ ohm

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1. A
   A convex lens produces both real and virtual images.
2. B
   A concave lens produces both real and virtual images.
3. C
   A convex lens can produce images equal, greater and smaller than the size of the object.
4. D
   A concave lens always produces images smaller than the size of the object.

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1. A
   400 cal
2. B
   550 cal
3. C
   1050 cal
4. D
   1200 cal

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1. A
   Lime water
2. B
   Limestone
3. C
   Chalk
4. D
   Marble

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1. A
   Viscosity
2. B
   Floatation
3. C
   Elasticity
4. D
   Surface tension

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1. A
   Tin
2. B
   Sea water
3. C
   Soil
4. D
   Air

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1. A
   Ice present in ice-cream
2. B
   Solid water at Antarctica
3. C
   Solid state of carbon dioxide
4. D
   Solid water of ionosphere

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1. A
   Diffusion
2. B
   Dispersion
3. C
   Osmosis
4. D
   Absorption

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1. A
   Epithelial tissue
2. B
   Muscular tissue
3. C
   Nervous tissue
4. D
   Connective tissue

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1. A
   Nucleus
2. B
   Proteins
3. C
   Chloroplasts
4. D
   Digestive enzymes

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1. A
   Xylem consists of tracheids, vessels, xylem parenchyma and xylem fibres.
2. B
   Flexibility in plants is due to sclerenchyma.
3. C
   Parenchyma have no intercellular spaces.
4. D
   Xylem consists of sieve plate, sieve tube and companion cells.

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1. A
   Carl Linnaeus
2. B
   Panchanan Maheshwari
3. C
   Birbal Sahni
4. D
   Bentham and Hooker

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

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1. A
   $\sqrt{2}\,T$
2. B
   $\frac{1}{\sqrt{2}}\,T$
3. C
   $2\sqrt{2}\,T$
4. D
   T

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1. A
   velocity of sound waves in the medium.
2. B
   amplitude of the sound waves.
3. C
   frequency of the sound waves.
4. D
   frequency and velocity of the sound waves.

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1. A
   16 F
2. B
   1 F
3. C
   4 F
4. D
   None of the above

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