set 2 MCQ Questions & Answers Detailed Explanation

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The following question based on general concepts of chemistry topic of general science mcq

Questions : AgNO3(aq) + NaCl(aq) ⟶ AgCl(s) + NaNO3(aq) Above reaction is -

(a) combination reaction

(b) precipitation reaction

(c) double displacement reaction

(d) Both (b) and (c)

The correct answers to the above question in:

Answer: (d)

This reaction is double displacement and precipitation as well because insoluble silver chloride gets precipitated.

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Read more general concepts of chemistry Based General Science Questions and Answers

Question : 1

Which is not a balanced equation ?

a) Fe + Cl2 ⟶ FeCl3

b) NaOH + HCl ⟶ NaCl + H2O

c) Mg + CuSO4 ⟶ MgSO4 + Cu

d) Mg + 2HNO3 ⟶ Mg(NO3 )2 + H2

Answer: (a)

2Fe + 3Cl2 ⟶ 2FeCl3 (balanced chemical eqn.)

Question : 2

Which of the following does not corrode when exposed to the atmosphere?

a) Gold

b) Iron

c) Copper

d) Silver

Answer: (a)

Gold is a noble metal.

Question : 3

When electrons are added the resulting ion is called

a) neutral radical

b) basic radical

c) acidic radicals

d) None of these

Answer: (c)

Cl + e– Cl– (acidic radicals)

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