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Chemistry Test 111
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  • Question 1/10
    1 / -0.25
    Which among the following combination is present in the higher amount in hard water?
  • Question 2/10
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    Potassium is a chemical element with the symbol:
  • Question 3/10
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    There are some plastics that when moulded once cannot be softened by heating. These are called ___________.
  • Question 4/10
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    Brass is an alloy of _______________.
  • Question 5/10
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    ZnSO4. 7H2O is the chemical formula of which substance?
  • Question 6/10
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    Which cloth can readily catch fire but still prefered for wearing purpose?
  • Question 7/10
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    What is the chemical formula of ‘quartz’?
  • Question 8/10
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    The pH of pure water (H2O) at 25° C is __________.
  • Question 9/10
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    Which gas in its solid state is known as dry ice?
  • Question 10/10
    1 / -0.25
    What is the chemical name of vinegar?
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