set 1 MCQ Questions & Answers Detailed Explanation

Question : 1

Green chemistry means such reactions which

a) reduce the use and production of hazardous chemicals

b) are related to the depletion of ozone layer

c) produce colour during reactions

d) study the reactions in plants

Question : 2

The statement which is not true:

a) SO₃ is more harmful air pollutant than SO₂

b) NO₂ does not play any role in photochemical smog

c) SO₂ does not affect larynx (voice box)

d) NO is more toxic to living tissues than NO₂

Question : 3

Flint glass is obtained from which of the following?

a) Sodium aluminum borosilicate

b) Sand, red lead and potassium carbonate

c) Zinc and barium borosilicate

d) Pure silica and zinc oxide

Question : 4

Identify the wrong statement in the following:

a) Greenhouse effect is responsible for global warming.

b) Acid rain is mostly because of oxides of nitrogen and sulphur.

c) Chlorofluorocarbons are responsible for ozone layer depletion.

d) Ozone layer does not permit infrared radiation from the sun to reach the earth.

Question : 5

Match List-I with List-II :

a) A – 4, B – 2, C – 1, D – 3

b) A – 1, B – 4, C – 2, D – 3

c) A – 4, B – 1, C – 2, D – 3

d) A – 4, B – 1, C – 3, D – 2

Question : 6

The substance having the largest concentration in acid rain?

a) HNO₃

b) HCl

c) H₂CO₃

d) H₂SO₄