Household MCQs with Answers

Temporary hardness of water is due to the presence of dissolved salts of _?

• A.Ca(HCO₃)₂
• B.CaSO₄
• C.MgCl₂
• D.NaCl

Past Paper MCQ

Soap and detergents remove dirt from clothes due to ?

• A.Lowering of inter-facial tension
• B.High solubility in water
• C.Oxidation of dirt particles
• D.Formation of alkaline solution

Which one of the following tablets are used for water purification?

• A.Halazone
• B.Paracetamol
• C.Aspirin
• D.Ibuprofen

Which of the following is the only food that does not get spoiled?

• A.Salt
• B.Sugar
• C.Honey
• D.Vinegar

Rock candy can be made by which one of the following techniques?

• A.Seedling technique
• B.Distillation technique
• C.Fermentation technique
• D.Sublimation technique

The fermented product sauerkraut is obtained from which of the following?

• A.Soybean
• B.Cucumber
• C.Cabbage
• D.Grapes

Soap is the term for a salt of a ?

• A.Mineral acid
• B.Nucleic acid
• C.Amino acid
• D.Fatty acid

Sodium fluoroacetate is also sometimes referred to as _?

• A.1020
• B.1060
• C.1040
• D.1080

Which substance is commonly used to disinfect surfaces and prevent the spread of disease?

• A.Sodium Chloride
• B.Calcium Carbonate
• C.Hydrogen Peroxide
• D.Magnesium Sulfate

Natural rubber is an elastomer originally derived from latex, a milky colloid produced by some plants. The chemical name for the purified form of natural rubber is _?

• A.Polyethylene
• B.Polyisoprene
• C.Polyvinyl chloride
• D.Polystyrene