Self Studies

Acids Bases And...

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  • Question 1
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    Which one of the following is not a bleaching agent?

  • Question 2
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    Gypsum is

  • Question 3
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    An aqueous solution of a sodium salt was electrolysed by using graphite electrodes in an electrolytic cell. A gas 'X' was evolved at the anode. When 'X' was allowed to mix with hydrogen sulphide gas contained in a jar, a yellow coloured solid was deposited on the walls of the gas jar. Which one of the following gases is 'X'?

  • Question 4
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    Permanent hardness of water can be removed by adding

  • Question 5
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    Which one of the following pairs of compounds cannot co-exist in water?

  • Question 6
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    Sodium bicarbonate is also known as

  • Question 7
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    Which of the following is not a salt?

  • Question 8
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    Which of the following is used for disinfecting drinking water?

  • Question 9
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    Which of the following is not a use of sodium hydrogen carbonate?

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