Questions

A boat is sailing towards a lighthouse of height 20√3 m at a certain speed. The angle of elevation of the top of the lighthouse changes from 30° to 60° in 10 seconds. What is the time taken (in seconds) by the boat to reach the lighthouse from its initial position?

Fuse wire is made of an alloy of

Sound can not travel in which of the following medium?

The most abundant metal in the Earth's crust is

NTPC is a Central Public Sector Enterprise in which sector?

In the following question, the sentence given with blank to be filled in with an appropriate word. Select the correct alternative out of the four and indicate it by selecting the appropriate option.

She deserved the accolades as she ____________________ for it.

In the following question, out of the four alternatives, choose the one which can be substituted for the given words/sentence.

Study of cultures.

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

Achilles' heel