Everyday Science · Everyday & Industrial Chemistry · page 13 of 21

Household MCQs with Answers

Includes 23 past paper MCQs (marked).

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Household, Food & Material Chemistry MCQs (121–130)

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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121.
The permanent hardness of water is due to the presence of ?
Correct Answer: B. MgSO₄
One-liner
Permanent hardness of water is due to the presence of dissolved MgSO₄ (magnesium sulphate) and other sulphates/chlorides of calcium and magnesium.
122.
Which of the following is used to make cosmetics?
Correct Answer: B. Petroleum jelly
One-liner
Petroleum jelly is widely used in the manufacture of cosmetics as a moisturizing base and emollient.
123.
The electrolyte used in a dry cell is a paste of ?
Correct Answer: B. Ammonium chloride
One-liner
The electrolyte used in a dry cell is a paste of ammonium chloride.
124.
Table tennis balls are made from _?
Correct Answer: B. Casein
One-liner
Table tennis balls are made from casein, a protein derived from milk.
125.
Which material is considered safest to wear while cooking?
Correct Answer: B. Terylene
One-liner
Terylene is considered the safest material to wear while cooking because it is flame-resistant and does not catch fire easily.
126.
The composition water _% is present in honey.
Correct Answer: A. 17
One-liner
The composition of water present in honey is 17%.
127.
Natural rubber is made up of _.
Correct Answer: A. Isoprene
One-liner
Natural rubber is a polymer made up of Isoprene (2-methyl-1,3-butadiene) monomer units.
128.
Which of the following materials is used in the manufacturing of paper?
Correct Answer: D. Wood
One-liner
Paper is primarily manufactured from wood pulp, which is obtained by processing wood fibers from trees.
129.
Past Paper MCQ
The most common element to all perfumes is _?
Correct Answer: A. Ethyl Alcohol
One-liner
The most common element to all perfumes is Ethyl Alcohol.
130.
Vegetable oil and sulphur dioxide are used in the production of?
Correct Answer: B. Margarine
One-liner
Vegetable oil and sulphur dioxide are used in the production of margarine.

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Household MCQs with Answers

Household, Food & Material Chemistry MCQs (121–130)

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