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 Chemistry Questions

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Q:

What is the process of rust forming on iron called?

A) Rusting B) Crystallisation
C) Shovel D) Spade
 
Answer & Explanation Answer: A) Rusting

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Q:

What is the chemical formula for Sodium Chloride (Salt)?

A) NaCl2 B) NaCl
C) Na2Cl D) Na2C
 
Answer & Explanation Answer: B) NaCl

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Q:

Which element is generally No Radioactive?

A) Thorium B) Polonium
C) Germanium D) Plutonium
 
Answer & Explanation Answer: C) Germanium

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Q:

What is the number of groups and periods in the modern periodic table?

A) 18, 7 B) 18, 8
C) 16, 7 D) 16, 8
 
Answer & Explanation Answer: A) 18, 7

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Q:

An acid can be defined as

Answer

An acid can be defined as a molecule or other species which can donate a proton or accept an electron pair in reactions.


(OR)


A substance with particular chemical properties including turning litmus red, neutralizing alkalis, and dissolving some metals; typically, a corrosive or sour-tasting liquid of this kind.

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Q:

Which of the following is an example of thermosetting plastic?

A) Bakelite B) PVC
C) Polyethylene D) No option is correct.
 
Answer & Explanation Answer: A) Bakelite

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Q:

Which among the following is false about viscosity?

A) Viscosity of gases is less than that of liquids B) Viscosity of gases increases with rise in temperature
C) Viscosity of liquid decreases with rise in temperature D) Viscosity of liquid decreases with increase in pressure
 
Answer & Explanation Answer: D) Viscosity of liquid decreases with increase in pressure

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Q:

Earth's crust mainly contains ______.

A) bauxite B) manganese
C) silica D) iron
 
Answer & Explanation Answer: C) silica

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