Which synthetic fibre is known as artificial silk?

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Important Questions on Chemistry

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General Science for Competitive Exams>Chapter 2 - Chemistry>MCQs>Q 228

The major ingredient of leather is

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General Science for Competitive Exams>Chapter 2 - Chemistry>MCQs>Q 229

In the manufacturing of safety matches, which of the following materials are used to coat the two sides of matchboxes?

1

. Yellow phosphorus

2

. Glue

3

. Glass powder

4

. Red phosphorus

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General Science for Competitive Exams>Chapter 2 - Chemistry>MCQs>Q 230

Glass is made of the mixture of

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General Science for Competitive Exams>Chapter 2 - Chemistry>MCQs>Q 231

Which of the following is true regarding a catalyst?

$1 .$ It is a substance that increases the rate of reaction.
$2 .$ It is a substance that reduces activation energy.
$3 .$ It is a substance that does not provide an alternative path to the reaction.
$4 .$ It is a substance that is consumed in the reaction.

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General Science for Competitive Exams>Chapter 2 - Chemistry>MCQs>Q 232

The chemical used as a 'fixer' in photography is

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General Science for Competitive Exams>Chapter 2 - Chemistry>MCQs>Q 233

Match the following:

List-I (Process)	List-II (Changes)
A. Evaporation	1. Liquid into gas
B. Sublimation	2. Gas into liquid
C. Freezing	3. Solid into gas
D. Melting	4. Solid into liquid
	5. Liquid into solid