environmental chemistry - Category wise Question and Answer Practice Test with Solutions

Question : 21 [CDS]

Which one of the following is used as a mordant in dyeing and tanning industry?

a) Magnesium chloride

b) Magnesium carbonate

c) Magnesium oxide

d) Magnesium sulphate

Question : 22

Chipko movement is concerned with –

a) plant breeding

b) project tiger

c) plant conservation

d) animal breeding

Question : 23 [NDA]

Which one of the following acids is used for etching glass?

a) HF

b) HNO₃

c) H₂SO₄

d) HCl

Question : 24 [IAS Prelim]

Consider the following chemicals:

1. Benzene
2. Carbon tetrachloride
3. Sodium carbonate
4. Trichloroethylene

a) 1, 2 and 4 only

b) 2 only

c) 1 only

d) 1, 2, 3 and 4

Question : 25

The smog is essentially caused by the presence of

a) O₂ and N₂

b) O₂ and O₃

c) Oxides of sulphur and nitrogen

d) O₃ and N₂