Latest Science and Technology General Knowledge(GK) Questions and answers

1 .

Which of these is called stranger gas

A)

Krypton

B)

Argon

C)

Neon

D)

Xenon

Correct Answer : Xenon

2 .

The Planet with the shortest year is

A)

Pluto

B)

Mars

C)

Mercury

D)

Earth

Correct Answer : Mercury

Mercury is an extreme planet in several respects. Because of its nearness to the Sun—its average orbital distance is 58 million km (36 million miles)—it has the shortest year (a revolution period of 88 days) and receives the most intense solar radiation of all the planets.

3 .

Into which colour will the yellow silver bromide turn when exposed to sunlight

A)

Due to oxidation of an enzyme present in apple

B)

Due to settling of micro dust present in air

C)

As the original inner colour is brown

D)

Due to presence of iron in apple

Correct Answer : Due to oxidation of an enzyme present in apple

4 .

Which of the following materials has the highest melting point

A)

Glass

B)

Bauxite

C)

Tungsten

D)

Tantalum Carbide

Correct Answer : Tantalum Carbide

5 .

If ballon filled with air is immersed in hot water, its volume would

A)

Reduce

B)

Increase

C)

Remain same

D)

None of the above

Correct Answer : Increase

6 .

At high and hilly altitudes, for some people blood will flow out of nose due to the reason that

A)

Atmospheric pressure is low

B)

Temperature is low

C)

They are afraid

D)

Atmospheric pressure is high

Correct Answer : Atmospheric pressure is low

7 .

The lysimeter helps in the estimation of

A)

Relative humidity

B)

Wind direction

C)

Evapotranspiration

D)

Vapour pressure

Correct Answer : Evapotranspiration

8 .

Which one is a "noble gas"

A)

Oxygen

B)

Helium

C)

Carbon dioxide

D)

Hydrogen

Correct Answer : Helium

Noble gas, any of the seven chemical elements that make up Group 18 (VIIIa) of the periodic table. The elements are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), radon (Rn), and oganesson (Og).

9 .

Goiter disease is caused by the deficiency of

A)

Riboflavin

B)

Calcium

C)

Iodine

D)

Iron

Correct Answer : Iodine

The most common cause of goiters worldwide is a lack of iodine in the diet. In the United States, where the use of iodized salt is common, a goiter is more often due to the over- or underproduction of thyroid hormones or to nodules in the gland itself.

10 .

Silver gets corroded due to the presence of ___________ in air

A)

Carbon

B)

Nitrogen

C)

Nitrous Oxide

D)

Hydrogen Sulphide

Correct Answer : Hydrogen Sulphide

However, when exposed to air, silver reacts with Hydrogen Sulphide in the atmosphere, especially in marine environment, and readily forms a surface tarnish of silver sulphide.