Chemistry - Study Mode

[#821] Freon used as refrigerant is chemically
Correct Answer

(C) Chlorofluoro hydrocarbon

Explanation

Solution: Freon is a trade name for a class of chemicals known as Chlorofluorocarbons or CFC's and are used as a refrigerant in air conditioning systems for homes and automobiles.

[#822] The gas used for artificial fruit ripening of green fruit is
Correct Answer

(A) Ethylene

Explanation

Solution: Ethylene gas, acetylene gas liberated from calcium carbide, and ethephon are some of the commercial ripening agents used successfully in the trade and they have been widely studied for their effectiveness on initiating and accelerating the ripening process and their effect on fruit quality and health related issues.

[#823] Which one of the following vegetable oils is used in the manufacture of paints?
Correct Answer

(C) Linseed oil

Explanation

Solution: Linseed oil and castor oils are used mainly as drying agents in paints and varnishes. Linseed oil is generally used in the manufacture of oil paints, drying oil finish or varnish in wood finishing, as a pigment binder in oil paints, as a plasticizer and in the manufacture of linoleum.

[#824] KMnO 4 can be used as
Correct Answer

(D) Disinfectant

Explanation

Solution: KMnO 4 can be used as disinfectant.

[#825] A detergent is a
Correct Answer

(A) Cleansing agent

Explanation

Solution: A detergent is a cleansing agent.