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 : Metals like Gold, Platinum which do not easily react are called

(a) noble metals

(b) active metals

(c) dull metals

(d) bright metals

The correct answers to the above question in:

Answer: (a)

Noble metals are those metals which do not react easily and lie at the bottom of the activity series.

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Read more chemistry gk Based General Science Questions and Answers

Question : 1

The heaviest natural element is

a) Mercury

b) Gold

c) Uranium

d) Calcium

Answer: (c)

Question : 2

Which is the hardest in the following?

a) Glass

b) Quartz

c) Diamond

d) Platinum

Answer: (c)

Question : 3

Which one of the following is the correct sequence of the given substances in the decreasing order of their densities?

a) Gold > Mercury > Steel

b) Steel > Gold > Mercury

c) Steel > Mercury > Gold

d) Gold > Steel > Mercury

Answer: (a)

Question : 4

Aluminium is used for making cooking utensils. Which of the following properties of aluminium are responsible for the same?

  1. Good thermal conductivity
  2. Good electrical conductivity
  3. Ductility
  4. High melting point

a) (ii) and (iii)

b) (i) and (ii)

c) (i) and (iii)

d) (i) and (iv)

Answer: (d)

Question : 5

Oxygen and ozone are

a) isomers

b) isotopes

c) allotropes

d) isobars

Answer: (c)

Question : 6

The chemical structure of the pearl is

a) Calcium Carbonate & Magnesium Carbonate

b) Calcium Chloride

c) Calcium Carbonate

d) Calcium Sulphate

Answer: (c)

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