TNPSC Chemistry Questions and Answers in English Pdf - 1

Question: 1

Which is/are the important raw materials required in cement industry?

(A) Clay

(B) Limestone

(C) Gypsum

(D) Limestone and clay

Question: 2

Which one among the following does not have an allotrope?

(A) Oxygen

(B) Sulphur

(C) Carbon

(D) Nitrogen

Question: 3

The elements of a group in the periodic table

(A) are isobars

(B) are isotopes

(C) have similar chemical properties

(D) have consecutive atomic numbers

Question: 4

Acid rain is caused by the pollution of environment by

(A) nitrous oxide and sulphur dioxide

(B) ozone and carbon dioxide

(C) carbon dioxide and nitrogen

(D) carbon monoxide and carbon dioxide

Question: 5

Which of the following are the two main constituents of granite?

(A) Iron and silica

(B) Silica and aluminium

(C) Iron oxide and potassium

(D) Iron and silver