Chemistry MCQ for Competitive Exams with Answers - 2

Question: 6

Which of the following gives effervescence with sodium bicarbonate?

(A) Alcohol

(B) Aldehyde

(C) Carboxylic acid

(D) Ketone

Question: 7

When iron is rusted, it is

(A) Decomposed

(B) Evaporated

(C) Reduced

(D) Oxidized

Question: 8

Formaldehyde reacts with ammonia and gives

(A) Chloroform

(B) Mesitylene

(C) Urotropine

(D) Formation

Question: 9

Sulphur dioxide is a/an

(A) Amphoteric oxide

(B) Acidic oxide

(C) Basic oxide

(D) Neutral oxide

Question: 10

The percentage of carbon in mild steel is

(A) 0.1-0.4%

(B) 0.1-0.5%

(C) 0.4-1.5%

(D) 0.5-1.5%