Chemistry - Study Mode

[#296] What do you understand by the term Espuma ?
Correct Answer

(A) Foam

Explanation

Solution: Espuma is a Spanish term for froth or foam, and one that is created specifically with the use of a siphon bottle. Espuma is created mainly with liquid that has air incorporated in it to create froth. This is a specific term, since culinary foams may be attained through other means.

[#297] Cloud is a colloidal dispersion of
Correct Answer

(D) Water drops in a dispersion medium of air

Explanation

Solution: Cloud is a colloidal dispersion of water drops in a dispersion medium of water.

[#298] Cooking gas is a mixture of
Correct Answer

(C) Butane and propane

Explanation

Solution: Liquefied petroleum gas (LPG), also called LP gas, any of several liquid mixtures of the volatile hydrocarbons propene, propane, butene, and butane.

[#299] Thermal electricity is generated by using which of these ?
Correct Answer

(C) Coal, Natural Gas and Petroleum

Explanation

Solution: Traditional thermal power plants: also called combustion power plants, they operate with energy produced by a steam boiler fueled by coal, natural gas, heating oil, as well as by biomass. The steam activates a turbine which, in turn, drives an alternator to produce electricity.

[#300] Which of the following is the major constituent of LPG?
Correct Answer

(D) Butane

Explanation

Solution: Butanes are highly flammable, colourless, easily liquefied gases. When blended with propane and other hydrocarbons, it is referred to commercially as LPG, for liquefied petroleum gas.