Questions

Any undesirable change in physical, chemical or biological characteristics of air, land, water or soil is called?

Who first determined the value of G (gravitational constant)?

A Sonar of a ship sends sounds waves of speed 1500 m/s. These waves are reflected back by the ocean floor in 5 seconds. Find the depth (in m) of the ocean floor.

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

Ennui

In the following question, a word has been written in four different ways out of which only one is correctly spelt. Select the correctly spelt word.

In the following question, a sentence has been given in Direct/Indirect speech. Out of the four alternatives suggested, select the one which best
expresses the same sentence in Indirect/Direct speech.
Vaibhav said to me, "We have to win this game."

Depreciation is loss in value of ________

_______________ is caused by parasites of the Plasmodium genus.