What is the color of the precipitate which is formed when aqueous

Subject

Science

Class

TET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

1.

Ant sting contains acid

  • Ascorbic acid

  • Tartaric acid

  • Lactic acid

  • Formic acid


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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


B.

White

When an aqueous solution of sodium sulphate and barium chloride are mixed, then white colour precipitate of barium sulphate is formed

Na2SO4 (aq)Sodium Sulphate + BaCl2(aq)Barium chloride  BaSO4Barium sulphate (White) + 2NaCl(aq)Sodium chloride


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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


6.

Recently discovered most stable allotropes of carbon is

  • C16

  • C60

  • C20

  • C56


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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