CBSE Class 12 Chemistry Surface Chemistry Quiz 1

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CBSE › Class 12 › Chemistry › Surface Chemistry

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1. Volume of one mole of any gas at NTP is

A 11.2 litre B 22.4 litre C 10.2 litre D 22.8 litre

2. Tyndall effect confirms the

A gravity effect on the sol. particles B light scattering by the sol. particles C heterogeneous nature of sols. D Brownian motion of the sol. particles

3. Which one of the following is alyophilic colloid?

A Milk B Gum C Fog D Blood

4. Which of the following is not correct for enzyme catalysis?

A The enzyme activity is maximum at optimum pH which is between 5-7 B Each enzyme is specific for a given reaction C The favourable temperature range of enzyme activity is between 25-37°C D The enzymatic activity is increased in presence of certain substances.called co-enzymes

5. Presence of traces of arsenious oxide (As

A catalytic promoter B catalytic poison C dehydrating agent D drying agent

6. (b)

7. Shape selective catalysis is a reaction catalysed by

A zeolite B enzymes C platinum D Ziegler-Natta catalyst

8. Which of the following types of metals make the most efficient catalyst?

A Alkali metals B Transition metals C Inner transition metals D Alkaline earth metals

9. The oxide of nitrogen which acts as a catalyst in lead chamber process is

A NO B NO C N D H

10. The activity of an enzyme becomes ineffective

A at low temperature B at atmospheric pressure C at high temperature D in aqueous medium

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