1000+ GATE Mechanical Previous Year Papers with Solutions Pdf - 2

Question: 6

The science of poisons, their effects, antinodes and detection is known as

(A) poisonology

(B) petrology

(C) mineralogy

(D) toxicology

Question: 7

Out of the following metals, the least permissible percentage in drinking water is

(A) lead

(B) zinc

(C) copper

(D) chromium

Question: 8

Which thermometer is used to indicate the lowest temperature?

(A) liquid thermometer

(B) resistance thermometer

(C) alcohol thermometer

(D) clinical thermometer

Question: 9

Which of the following has least wavelength?

(A) gamma rays

(B) x-rays

(C) cosmic rays

(D) ultraviolet rays

Question: 10

The cycle of life, death and decay involving organic nitrogenous matter is called

(A) the hydrological cycle

(B) the carbon cycle

(C) the nitrogen cycle

(D) the sulphur cycle