TNPSC Chemistry Online Test in Tamil and English - 2

Question: 6

Which one of the following is an element which never exhibits positive oxidation state in any of its compounds?

(A) Fluorine

(B) Carbon

(C) Oxygen

(D) Chlorine

Question: 7

Mohr salt is a

(A) Simple salt

(B) Double salt

(C) Complex salt

(D) Hybrid salt

Question: 8

Which one among the following is the main ingredient in cement?

(A) Clay

(B) Gypsum

(C) Limestone

(D) Ash

Question: 9

The main constituent of vinegar is

(A) Acetic acid

(B) Ascorbic acid

(C) Citric acid

(D) Tartaric acid

Question: 10

Which of the following is used as lubricant?

(A) Silica

(B) Diamond

(C) Graphite

(D) Iron oxide