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Some Basic Conc...

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  • Question 1
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    Molarity of liquid water at 4°C is

  • Question 2
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    Which of the following statements about pure substances is correct ?

  • Question 3
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    In scientific notation for numbers, any number can be represented in the form, N × 10n   where,

  • Question 4
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    The prefix of the fraction 10–12 and its symbol respectively are

  • Question 5
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    Matter can be classified at the macroscopic or bulk level as

  • Question 6
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    Significant figures are

  • Question 7
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    On reduction with hydrogen, 3.6 g of an oxide of a metal left 3.2 g of the metal. If the vapour density of the metal was 32 g/L, then the simplest formula of the oxide would be 

  • Question 8
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    Chemistry does not play a major role in

  • Question 9
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    If 6.3 g of NaHCO3 is added to 15.0 g of CH3COOH solution, the weight of the residue is found to be 18.0 g. What is the mass of CO2 released in the reaction?

  • Question 10
    1 / -0

    One micrometer stands for

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