Tag: science & technology

Questions Related to science & technology

Bromine is a
general knowledge science & technology

  1. black solid

  2. red liquid

  3. colourless gas

  4. highly inflammable gas

Show answer
Correct Option: B

The hardest substance available on earth is
general knowledge science & technology

  1. Gold

  2. Coal

  3. Diamond

  4. Platinum

Show answer
Correct Option: C

The variety of coal in which the deposit contains recognisable traces of the original plant material is
general knowledge science & technology

  1. bitumen

  2. anthracite

  3. lignite

  4. peat

Show answer
Correct Option: D

Tetraethyl lead is used as
general knowledge science & technology

  1. pain killer

  2. fire extinguisher

  3. mosquito repellent

  4. petrol additive

Show answer
Correct Option: D

Which of the following is used as a lubricant?
general knowledge science & technology

  1. Graphite

  2. Silica

  3. Iron Oxide

  4. Diamond

Show answer
Correct Option: A

The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing, is
general knowledge science & technology

  1. Argon

  2. Xenon

  3. Helium

  4. Krypton

Show answer
Correct Option: C

The gases used in different types of welding would include
general knowledge science & technology

  1. oxygen and hydrogen

  2. oxygen, hydrogen, acetylene and nitrogen

  3. oxygen, acetylene and argon

  4. oxygen and acetylene

Show answer
Correct Option: D

The property of a substance to absorb moisture from the air on exposure is called
general knowledge science & technology

  1. osmosis

  2. deliquescence

  3. efflorescence

  4. desiccation

Show answer
Correct Option: B

In which of the following activities silicon carbide is used?
general knowledge science & technology

  1. Making cement and glass

  2. Disinfecting water of ponds

  3. cutting very hard substances

  4. Making casts for statues

Show answer
Correct Option: C

The average salinity of sea water is
general knowledge science & technology

  1. 3%

  2. 3.5%

  3. 2.5%

  4. 2%

Show answer
Correct Option: B