Questions

Which of the following is a greenhouse gas or a gas which can deplete the ozone layer?

What is the ratio of masses of hydrogen and oxygen in the water?

When iron is exposed to moist air, a reddish brown coating of hydrated Iron (III) Oxide (Fe2O3) is deposited on its surface. This reddish brown coating is called

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

The manager's bank account has been hacked.

The mid points of AB and AC of the Δ ABC are P and Q respectively. If PQ = 6 cm, then the side BC is

When did the U.S join WW-1?

Arithmometer was invented by

Geneva-based International Campaign to Abolish Nuclear Weapons (ICAN) received the 2017.....