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Ncert General Science Questions Test -2

Ncert General Science Questions Test -2

questions_answers_8

Ncert General Science Questions Test -2

Q1- which of the metal remain Liquid at room Temperature?

  1. Phosphorous
  2. Bromine
  3. Helium
  4. Mercury

Q2-Which of the following is used in the Pencil?

  1. Graphite
  2. Silicon
  3. Carbon
  4. Iron

Q3-Which of the following metal form amalgam with other metals?

  1. Tin
  2. lead
  3. zinc
  4. Mercury

Q4-The Gas Usually filled in the Bulb?

  1. Nitrogen
  2. Hydrogen
  3. Carbon dioxide
  4. Oxygen

Q5-Washing soda is common name for?

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  1. sodium carbonate
  2. calcium carbonate
  3. sodium bicarbonate
  4. calcium bicarbonate

Q6-Quartz crystals normally used in quartz clocks etc. is chemically

  1. Silicon Oxide
  2. Germanium Oxide
  3. A mixture of germanium oxide and silicon oxide
  4. Sodium silicate

Q7-which of the following gas is not known as the Green house Gas?

  1. Hydrogen
  2. Methane
  3. Nitrous Oxide
  4. Carbon dioxide

Q8-Bromine is a –

  1. Black solid
  2. Red Liquid
  3. Colorless Gas
  4. Highly Inflammable gas

Q9-The Hardest substance available on the earth is

india year book 2017
  1. Iron
  2. Diamond
  3. Platinum
  4. Gold

Q10-The variety of coal in which the deposit contains recognisable traces of the original plant material

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  1. Bituman
  2. Anthracite
  3. Lignite
  4. Peat

Q11-Tetraethyl lead is used as-

  1. Pain killer
  2. Fire Extinguisher
  3. Mosquito repellent
  4. petrol Additive

Q12-Which of the following is used as the Lubricants-

  1. Oil
  2. Petrol
  3. Graphite
  4. Silica

Q13-The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing, is

  1. Argon
  2. Xenon
  3. Helium
  4. Krypton

Q14-The gases used in different types of welding would include

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  1. oxygen and hydrogen
  2. oxygen and hydrogen,acetylene and nitrogen
  3. oxygen, acetylene and argon
  4. oxygen and acetylene

Q15-The property of a substance to absorb moisture from the air on exposure is called

  1. osmosis
  2. deliquescence
  3. efflorescence
  4. desiccation

Q16-The average salinity of sea water is

  1. 3 percent
  2. 3.5 percent
  3. 2 percent
  4. 2.5 percent

Q17-In which of the following activities silicon carbide is used?

  1. Making cement and glass
  2. Disinfecting water of ponds
  3. cutting very hard substances
  4. Making casts for statues

Q18-Galvanised iron sheets have a coating of

  1. lead
  2. tin
  3. zinc
  4. chromium

Q19-Heavy water is

  1. deuterium oxide
  2. ph6
  3. rain water
  4. none of the above

Answers-

  1. 4
  2. 1
  3. 4
  4. 1
  5. 1
  6. 1
  7. 1
  8. 2
  9. 2
  10. 4
  11. 4
  12. 3
  13. 3
  14. 4
  15. 2
  16. 2
  17. 3
  18. 3
  19. 1
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