Self Studies

Metals and Non-...

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  • Question 1
    1 / -0

    A student added dilute HCl to a test tube containing zinc granules. Which of the following observations are correct?
    I. Zinc surface became dull and black.
    II. A gas was evolved which burnt with a pop sound.
    III. The solution remained colourless.

  • Question 2
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    A metal gives lilac colour in bunsen flame and the solution of its oxide turns red litmus paper blue. The metal is?

  • Question 3
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    Observe the figure carefully and identify the substances marked as (p), (q) and (r).

  • Question 4
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    Aluminium is not acted upon by pure water as 

  • Question 5
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    Choose the correct statement 

  • Question 6
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    Silver articles become black on prolonged exposure to air. This is due to the formation of

  • Question 7
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    Which of the following metal evolves hydrogen on reacting with cold dilute HNO3HNO_{3}

  • Question 8
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    A student was given few metals Mg, K, Fe and Cu. Which of them will react only with steam and not with cold or hot water to give H2H_{2} gas?

  • Question 9
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    Argentite is a mineral of:

  • Question 10
    1 / -0

    Sodium metal is extracted by the electrolysis of 

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