Everyday Science · Everyday & Industrial Chemistry · page 7 of 21

Household MCQs with Answers

Includes 23 past paper MCQs (marked).

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Household, Food & Material Chemistry MCQs (61–70)

10 MCQs with answers and a short one-liner. Hide answers to test yourself.

Past paper MCQs in this chapter · See all past papers

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61.
_ moisture is allowed in prepared pellets.
Correct Answer: D. 16%
One-liner
The allowed moisture content in prepared pellets is 16%.
62.
Ethanol (alcohol) is a type of?
Correct Answer: B. Bio Fuel
One-liner
Ethanol (alcohol) is a type of Bio Fuel.
63.
Which one of the following is an example of a solution of liquid in solid?
Correct Answer: B. Dental filling
One-liner
A dental filling (amalgam) is an example of a liquid-in-solid solution, where liquid mercury dissolves solid metals to form a solid alloy.
64.
What is an important use of phosphorus in agriculture?
Correct Answer: D. As a fertilizer
One-liner
Phosphorus is an essential plant nutrient and is primarily used in agriculture as a fertilizer to promote root development, flowering, and seed formation.
65.
Which one of the following is not a condensation polymer?
Correct Answer: C. Neoprene
One-liner
Neoprene is not a condensation polymer; it is an addition polymer made from chloroprene.
66.
Which of the following is not a natural fibre?
Correct Answer: C. Rayon
One-liner
Rayon is not a natural fibre; it is a semi-synthetic fibre made from regenerated cellulose.
67.
Chemicals that are used to get rid of insects that eat plants and crops are called ?
Correct Answer: C. Pesticides
One-liner
Chemicals used to get rid of insects that eat plants and crops are called pesticides.
68.
Past Paper MCQ
Dry chemical Fire extinguisher can be used on
Correct Answer: C. on all types of fire
One-liner
Dry chemical fire extinguishers are versatile and can be used on all types of fire (Classes A, B, C, and electrical fires).
69.
Good food hygiene prevents:
Correct Answer: D. Food Poisoning
One-liner
Good food hygiene prevents food poisoning by eliminating harmful bacteria and contaminants from food.
70.
After casting, an ordinary cement concrete on drying:
Correct Answer: C. Shrinks
One-liner
After casting, ordinary cement concrete shrinks on drying.

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Household MCQs with Answers

Household, Food & Material Chemistry MCQs (61–70)

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