Practice every past-year question.

1. A
   Calorie
2. B
   Joule
3. C
   Kcal/kg $^{\circ}$C
4. D
   Cal/g $^{\circ}$C

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1. A
   Reflection of light
2. B
   Refraction of light
3. C
   Dispersion of light
4. D
   Absorption of light

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1. A
   $-COOH$
2. B
   $-CO-$
3. C
   $-CHO-$
4. D
   $-OH$

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1. A
   Concave
2. B
   Plano concave
3. C
   Plano convex
4. D
   Convex

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1. A
   Anodization
2. B
   Tinning
3. C
   Galvanizing
4. D
   Alloying

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