First thing after harvesting fish from a water body for quality control of meat it is recommended?

C. Wash the fish with salt water

The key feature of the container used for aerosol spray cans is which one of the following?

B. It contains more than 25% recycled metals

D. It is made entirely of plastic

Everyday Science · Everyday & Industrial Chemistry · page 8 of 21

Household MCQs with Answers

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Household, Food & Material Chemistry MCQs (71–80)

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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71.
First thing after harvesting fish from a water body for quality control of meat it is recommended?
Correct Answer: A. De-gut the fish
One-liner
The first recommended step after harvesting fish for meat quality control is to de-gut the fish.
72.
Most common pesticides frequently used are _?
Correct Answer: D. Organophosphates
One-liner
The most common pesticides frequently used are Organophosphates.
73.
What is the major naturally occurring matrix polymer found in leather?
Correct Answer: C. Collagen
One-liner
The major naturally occurring matrix polymer found in leather is collagen.
74.
Gypsum is used to ?
Correct Answer: D. Decrease pH
One-liner
Gypsum (calcium sulfate) is used to decrease pH of alkaline soils by displacing sodium ions with calcium ions.
75.
The key feature of the container used for aerosol spray cans is which one of the following?
Correct Answer: B. It contains more than 25% recycled metals
One-liner
The key feature of the container used for aerosol spray cans is that it contains more than 25% recycled metals.
76.
_ is used as preservative for life specimen.
Correct Answer: B. Formalin
One-liner
Formalin is used as a preservative for life specimens because it prevents tissue decay by cross-linking proteins.
77.
Which is addition polymer?
Correct Answer: D. Both A and B
One-liner
Both Polythene and PVC are addition polymers, formed by the addition polymerization of monomer units without the loss of any small molecules.
78.
Organo-chlorides were first discovered as _?
Correct Answer: D. Acute poisons
One-liner
Organo-chlorides were first discovered as acute poisons.
79.
Past Paper MCQ
Sugarcane and Beet are used in Pakistan for the production of which product?
Correct Answer: A. Sugar
One-liner
Sugarcane and beet are used in Pakistan for the production of sugar.
80.
Of the pesticides, the pyrethroids are considered as ?
Correct Answer: B. Moderately toxic
One-liner
Pyrethroids are considered moderately toxic among pesticides.

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Household MCQs with Answers

Household, Food & Material Chemistry MCQs (71–80)

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