TNPSC Group 2 Study Material in Tamil and English - 1

Question: 1

Slaked lime means ___

(A) Calcium hydroxide

(B) Magnesium hydroxide

(C) Ammonium hydroxide

(D) Sodium hydroxide

Ans: A

Calcium hydroxide

Question: 2

Which of the following is a double salt?

(A) Potash alum

(B) Sodium zinc cyanide

(C) Sodium sulphate

(D) Lead chloride

Ans: A

Potash alum

Question: 3

Which of the following is an indicator?

(A) Sugar solution

(B) Hydrochloric acid

(C) Sodium hydroxide

(D) Phenolphthalein

Ans: D

Phenolphthalein

Question: 4

Which of the following is an alkali?

(A) Na HCL

(B) HCL

(C) NaOH

(D) CO

Ans: C

NaOH

Question: 5

Fruits like lemon and orange contain ___ acid.

(A) Citric

(B) Malic

(C) Lactic

(D) Tartaric

Ans: A

Citric

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