Basic General Knowledge - Study Mode

[#626] Fathometer is used to measure
Correct Answer

(B) Ocean depth

Explanation

Solution: Fathometer is used to measure Ocean depth. Fathometer is a depth finder that uses sound waves to determine the depth of water. The Richter Scale is used to measure the intensity of Earthquakes.

[#627] For galvanizing iron which of the following metals is used?
Correct Answer

(D) Zinc

Explanation

Solution: Zinc is used for galvanizing iron. Galvanization (or galvanizing as it is most commonly called in that industry) is the process of applying a protective zinc coating to steel or iron, to prevent rusting.

[#628] Economic goods are
Correct Answer

(C) all commodities that are limited in quantity as compared to their demand

Explanation

Solution: Economic goods are all commodities that are limited in quantity as compared to their demand. An economic good is a good or service that has a benefit (utility) to society. Also, economic goods have a degree of scarcity and therefore an opportunity cost.

[#629] For purifying drinking water alum is used
Correct Answer

(A) for coagulation of mud particles

Explanation

Solution: For purifying drinking water alum is used for coagulation of mud particles. Aluminium Sulfate, Shortly known as Alum, when added to raw water reacts with the bicarbonate alkalinities present in water and forms a gelatinous precipitate. The water over this sediment is almost clean other than some fine particles dissolved in it.

[#630] Hockey was introduced in the Asian Games in
Correct Answer

(B) 1958 in Tokyo

Explanation

Solution: Hockey was introduced in the Asian Games in 1958 in Tokyo. Field hockey was contested for men only at the 1958 Asian Games in Tokyo, Japan between 25 May and 30 May 1958 with five teams participating in a round robin competition.