Permanent hardness of water may be removed by the addition of___________...? Mcqs

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Permanent hardness of water may be removed by the addition of___________...?

(A) Sodium Carbonate
(B) Alum

(C) Potassium Permanganate
(D) Lime

✅ Correct Answer: Sodium Carbonate

Comments

Source: This question is taken from the Everyday Science

Latest MCQs

Radon is___________...?

(A) germon radio
(B) radio active gas

(C) artificial fibre
(D) an explosive

✅ Correct Answer: radio active gas

Comments

Source: This question is taken from the Everyday Science

Latest MCQs

The permanent hardness of water is due to presence ______...?

(A) MgSO4
(B) Mg(HCO3)₂

(C) CA(HCO3)2
(D) All of these

✅ Correct Answer: MgSO4

Comments

Source: This question is taken from the Everyday Science

Latest MCQs

Permanent hardness of water can be removed by adding __________...?

(A) Chlorine
(B) Washing soda

(C) Bleaching powder
(D) None of these

✅ Correct Answer: Washing soda

Comments

Source: This question is taken from the Everyday Science

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