1. A
   Condensation
2. B
   Fusion
3. C
   Melting
4. D
   Sublimation

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1. A
   is absorbed as latent heat of vaporization by the liquid
2. B
   is lost to the surrounding as such
3. C
   increases the temperature of the liquid.
4. D
   increases the K.E of the particle in the liquid

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1. A
   (a) - (ii), (b) - (i), (c) - (iii), (d) - (iv)
2. B
   (a) - (ii), (b) - (i), (c) - (iv), (d) - (iii)
3. C
   (a) - (i), (b) - (ii), (c) - (iii), (d) - (iv)
4. D
   (a) - (iii), (b) - (i), (c) - (ii), (d) - (iv)

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1. A
   transpiration
2. B
   evaporation
3. C
   osmosis
4. D
   diffusion

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1. A
   Evaporation, compression of gases, solubility
2. B
   Evaporation, diffusion, expansion of gases
3. C
   Evaporation, solubility, diffusion, compression of gases
4. D
   Diffusion, evaporation, compression of gases

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1. A
   $X = S$, $Y = SO_2$, $Z = SO_3$
2. B
   $X = O$, $Y = O_2$, $Z = O_3$
3. C
   $X = C$, $Y = CO$, $Z = CO_2$
4. D
   $X = P$, $Y = P_2O_3$, $Z = P_2O_5$

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1. A
   Sodium
2. B
   Lead
3. C
   Mercury
4. D
   Silver

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1. A
   They are more reactive than hydrogen.
2. B
   They are notreactive than hydrogen.
3. C
   They are less reactive than hydrogen.
4. D
   Non-metal being acceptors of electrons.

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1. A
   III and IV
2. B
   I and IV
3. C
   II and III
4. D
   I and II

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1. A
   Cr
2. B
   Fe
3. C
   CO
4. D
   Mg

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1. A
   Fullerene
2. B
   Sulphur
3. C
   Diamond
4. D
   Graphite

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1. A
   Constantan
2. B
   Brass
3. C
   Nichrome
4. D
   Bronze

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1. A
   $FeSO_4$ solution and silver metal
2. B
   $AgNO_3$ solution and copper metal
3. C
   NaCl solution and copper metal
4. D
   $MgCl_2$ solution and aluminum metal

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1. A
   $Fe$ and $Fe_3O_4$
2. B
   $Al$ and $Al_2O_4$
3. C
   $Fe$ and $Fe_2O_3$
4. D
   $Al$ and $Al_2O_3$

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1. A
   II and III only
2. B
   I, III and IV only
3. C
   I and IV only
4. D
   I, II, III and IV

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1. A
   A and C
2. B
   A, B and C
3. C
   All of these
4. D
   B and C

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1. A
   Dehydrating agent
2. B
   Reducing agent
3. C
   Oxidising agent
4. D
   Catalyst

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1. A
   Fe
2. B
   Ni
3. C
   Pt
4. D
   CO

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1. A
   All of these
2. B
   B and C
3. C
   A, B and D
4. D
   C and D

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1. A
   neutral
2. B
   acidic
3. C
   basic
4. D
   amphoteric

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1. A
   I, II and III only
2. B
   II and III only
3. C
   I and III only
4. D
   II, III and IV only

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1. A
   Zinc
2. B
   Oxygen
3. C
   Sulphur
4. D
   Phosphorus

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1. A
   Al
2. B
   Fe
3. C
   N
4. D
   Zn

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1. A
   (ii) and (iii)
2. B
   (i) and (iii)
3. C
   (ii) and (iv)
4. D
   (iii) and (iv)

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1. A
   Occurs as solid
2. B
   Conducts electricity in molten state
3. C
   Has high melting point
4. D
   Has low melting point

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