General science questions – Test 15

Nitrous oxide, commonly called laughing gas, has been a matter of concern to environmentalists recently because:

Pollination by wind is called

The Indian population receives the largest dose of ionizing radiation from:

The radioactive element most commonly detected in humans is

Radioisotopes which are used in medical diagnosis are known as

Most commercial nuclear power plants worldwide are cooled by

Which of the following materials is used along with iron ore and limestone to produce iron in a modern blast furnace?

The study of poisons is called

What range of frequencies are usually referred to as audio frequencies for humans?

A device used to measure the amount of moisture in the atmosphere is called a