Question # 1

How many kinds of space lattices are possible in a crystal?

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23

7

230

14

If N_A is Avogadro's number then number of valence electrons in 4.2 g of nitride ions N^3-is

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2.4 N_A

4.2 N_A

1.6 N_A

3.2 N_A

Which of the following metal exhibits more than one oxidation?

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Na

Mg

Fe

AI

When pressure is applied to the equilibrium system Ice Water Which of the following phenomenon will happen?

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More ice will be formed

Water will evaporate

More water will be formed

Equilibrium will not be formed

Which of the following has greatest reducing power?

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HI

Hbr

HCI

HI

Enzymes are

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Proteins

Mineral

Oils

Fatty acids

The digestion of fats in the intestines is aided by

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Diffusion

Protection

Peptization

Emulsification

Addition of iron filling to CuSO₄solution caused precipitation of Cu awing to the

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Reduction of Cu²⁺

Oxidation of Cu²⁺

Reduction of Fe

Reduction of Fe³⁺

Which of the following is a colligative property?

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Melting point

Osmotic pressure

Freezing point

Sublimation temperature

Dilute hydrochloric acid solution cannot be concentrated by boiling beyond

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11%

33%

44%

22%

The last orbit of argon would have electrons

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8

18

2

6

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