General Knowledge Questions

For photoelectric effect to take place, the metal used as the cathode should have_________

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.
The kids were laughing at the old lady.

An object at rest will remain at rest and an object in motion will remain in motion until and unless it is acted upon by an external force. This is Newton's

Anemometer is an instrument meant for measuring __________

In the following question, out of the four alternatives, select the alternative which is the best substitute of the phrase.

the way in which a substance holds together; thickness or viscosity

In the following question, out of the four alternatives, select the alternative which is the best substitute of the phrase.

The outer layer of the cerebrum (part of the brain), composed of folded grey matter, plays an important role in the consciousness.

In the following question, out of the given four alternatives, select the one which best expresses the meaning of the given word.
Actuate

Four words are given, out of which only one word is spelt correctly. Choose the correctly spelt word and click the button corresponding to it.