Tag: science & technology

Questions Related to science & technology

Production of chlorofluorocarbons (CFC) gas which is proposed to be banned in India, is used in which of the following domestic products?

general knowledge science & technology

  1. Television

  2. Refrigerator

  3. Tube light

  4. Cooking gas

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Correct Option: B

Balloons are filled with
general knowledge science & technology

  1. nitrogen

  2. helium

  3. oxygen

  4. argon

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Correct Option: B

Which of the following does not contain a coinage metal?
general knowledge science & technology

  1. Silver and Gold

  2. Zinc and Gold

  3. Copper and Silver

  4. Copper and Gold

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Correct Option: B

Which metal pollute the air of a big city?
general knowledge science & technology

  1. Copper

  2. Chromium

  3. Lead

  4. Cadmium

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Correct Option: C

Bell metal is an alloy of
general knowledge science & technology

  1. nickel and copper

  2. zinc and copper

  3. brass and nickel

  4. tin and copper

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Correct Option: D

Water is a good solvent of ionic salts because
general knowledge science & technology

  1. it has a high specific heat

  2. it has no colour

  3. it has a high dipole moment

  4. it has a high boiling point

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Correct Option: C

Which of the following is not an isotope of hydrogen?
general knowledge science & technology

  1. Tritium

  2. Deuterium

  3. Protium

  4. Yttrium

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Correct Option: D

The main constituents of pearls are
general knowledge science & technology

  1. calcium oxide and ammonium chloride

  2. calcium carbonate and magnesium carbonate

  3. aragonite and conchiolin

  4. ammonium sulphate and sodium carbonate

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Correct Option: B

Amalgams are
general knowledge science & technology

  1. highly coloured alloys

  2. alloys which contain mercury as one of the contents

  3. alloys which have great resistance to abrasion

  4. alloys which contain carbon

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Correct Option: B

Which of the following is the lightest metal?
general knowledge science & technology

  1. Mercury

  2. Lithium

  3. Lead

  4. Silver

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Correct Option: B