Recently discovered most stable allotropes of carbon is from Cla

Subject

Science

Class

TET Class 12

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Sample Papers

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 Multiple Choice QuestionsMultiple Choice Questions

1.

Ant sting contains acid

  • Ascorbic acid

  • Tartaric acid

  • Lactic acid

  • Formic acid


2.

What is the color of the precipitate which is formed when aqueous solutions of sodium sulphate and barium chloride are mixed?

  • Yellow

  • White

  • Green

  • Orange


3.

Which one is least reactive?

  • Iron

  • Copper

  • Silver

  • Gold


4.

Which is not obtained by the destructive distillation of coal?

  • Coal gas

  • Petroleum

  • Ammonia Liquor

  • Coal tar


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5.

The main function of phloem in plants is to

  • translocate food material

  • repair the injured parts

  • transport water

  • help in transpiration


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6.

Recently discovered most stable allotropes of carbon is

  • C16

  • C60

  • C20

  • C56


B.

C60

C60 (Fullerene) is the most stable allotrope of carbon. It is the only pure form of carbon. It is made by heating graphite is an electric arc in the presence of inert gases such as helium or argon.


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7.

Which among the following is amphoteric oxide?

  • SnO2

  • CaO

  • SiO2

  • CO2


8.

In ficus, the pollination is affected by

  • insects

  • air

  • water

  • birds


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9.

Which is the vestigial organ in a man?

  • Pinna muscles

  • Pinna

  • Ileum

  • Teeth


10.

Which organ is not helpful in respiration in mammals?

  • Ribs

  • Abdominal muscles

  • Diaphragm

  • Larynx


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