Tag: science & technology

Questions Related to science & technology

Potassium nitrate is used in

general knowledge science & technology

  1. medicine

  2. fertiliser

  3. salt

  4. glass

Show answer
Correct Option: B

Permanent hardness of water may be removed by the addition of

general knowledge science & technology

  1. sodium carbonate

  2. alum

  3. potassium permanganate

  4. lime

Show answer
Correct Option: A

Soda water contains
general knowledge science & technology

  1. carbonic acid

  2. sulphuric acid

  3. carbon dioxide

  4. nitrous acid

Show answer
Correct Option: C

The most important ore of aluminium is

general knowledge science & technology

  1. galena

  2. calamine

  3. calcite

  4. bauxite

Show answer
Correct Option: D

Most soluble in water is

general knowledge science & technology

  1. camphor

  2. sulphur

  3. common salt

  4. sugar

Show answer
Correct Option: D

Which of the following was to be discovered first in the chromospheres of the sun?
general knowledge science & technology

  1. Krypton

  2. Xenon

  3. Neon

  4. Helium

Show answer
Correct Option: D

Which of the following is in liquid form at room temperature?
general knowledge science & technology

  1. Lithium

  2. Sodium

  3. Francium

  4. Cerium

Show answer
Correct Option: C

Sodium metal is kept under

general knowledge science & technology

  1. petrol

  2. alcohol

  3. water

  4. kerosene

Show answer
Correct Option: D

Which of the following are the ingredients of gun metal?

general knowledge science & technology

  1. Iron, Zinc, Titanium

  2. Iron, tin

  3. Iron, Brass, Tin

  4. Copper, Tin

Show answer
Correct Option: D

From which mineral is radium obtained?

general knowledge science & technology

  1. Rutile

  2. Haematite

  3. Limestone

  4. Pitchblende

Show answer
Correct Option: D