Questions

Metals react with sodium hydroxide to produce ___________.

Which method will be employed to test the hardness of water?

If waste materials contaminate the source of drinking water, which of the following diseases will spread?

"Yakshagana" folk dance is associated to which Indian state?

Which formula correctly describes productivity?

In the following question, out of the four alternatives, select the alternative which best expresses the meaning of the idiom/phrase.
To steal a march

In the following question, a sentence has been given in Active/Passive voice. Out of the four alternatives suggested, select the one which best expresses the same sentence in Passive/Active voice.
He shall have bought a car.

In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from error, select 'No Error'.

The average age at which(A)/people die of heart diseases(B)/are decreasing.(C)/No error(D)