TNPSC Group 4 Chemistry Study Material in English Tamil - 1

Question: 1

Which one of the following is the ore of lead?

(A) Calamine

(B) Cerrusite

(C) Cinnabar

(D) Corundum

Ans: B

Cerrusite

Question: 2

Which one of the following materials is suitable for water purification?

(A) Asbestos

(B) Zeolites

(C) Silicones

(D) Quartz

Ans: B

Zeolites

Question: 3

A student by chance mixed acetone with alcohol. This mixture of acetone and alcohol can be separated by

(A) Fractional distillation

(B) Fractional crystallization

(C) Separating funnel

(D) Filtration

Ans: A

Fractional distillation

Question: 4

The gas releases through the septic tank is

(A) Ammonia

(B) Hydrogen

(C) Nitrogen

(D) Methane

Ans: D

Methane

Question: 5

Which one of the following. When dissolved in HO gives hissing sound?

(A) Quicklime

(B) Soda lime

(C) Slacked lime

(D) Limestone

Ans: D

Limestone

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