set 3 MCQ Questions & Answers Detailed Explanation

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The following question based on metals, non metals, minerals, ores, properties, uses topic of general science mcq

Questions : Which of the following metals reacting with sodium hydroxide solution produce hydrogen gas?
  1. Cu
  2. Al
  3. Fe
  4. Zn

(a) A and D

(b) B and D

(c) B and C

(d) B only

The correct answers to the above question in:

Answer: (a)

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Read more chemistry gk Based General Science Questions and Answers

Question : 1

Iron is obtained from

a) Pitch-blende

b) Monazite Sand

c) Limestone

d) Hematite

Answer: (d)

Question : 2

The only metal that is liquid at room temperature is -

a) zinc

b) mercury

c) sodium

d) tungsten

Answer: (b)

Mercury is the only element even being metal is liquid at room temperature.

Question : 3

Which one of the following is the softest?

a) Aluminium

b) Iron

c) Sodium

d) Copper

Answer: (c)

Question : 4

Chemically ‘Plaster of Paris’ is

a) Calcium Carbonate

b) Calcium Oxide

c) Calcium Sulphate

d) Calcium Oxalate

Answer: (c)

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