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Chemistry Test 163
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Chemistry Test 163
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  • Question 1/10
    4 / -1

    Which compound is obtained when acetaldehydes are treated with a dilute solution of caustic soda?

    Solutions

    Aldol is obtained by heating acetaldehyde molecules with dilute NaOH solutions.

     

  • Question 2/10
    4 / -1

    1 mole of ammonia is of 17 g. Then what is the mass of 0.3 moles of ammonia?

    Solutions

    Given that, 1 mole of ammonia is of 17 g. 0.3 mole of ammonia contains 17 x 0.3g of mass. It is because the molecular weight of a given compound is directly proportional to the number of moles of the given compound.

     

  • Question 3/10
    4 / -1

    One mole of sucrose contains how many grams of sucrose?

    Solutions

    One mole of sucrose C12H22O11 . The individual mass of carbon 12 amu, the individual mass of hydrogen is 1 amu and the individual mass of oxygen is 16 amu. But sucrose has 12 carbons, 22 hydrogens and 11 oxygens, that is 12 x 12 + 22 x 1 + 11 x 16 = 342 g

     

  • Question 4/10
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    When a gas is heated from 298 K to 323 K at a constant pressure of 1 atm its volume is

    Solutions

    According to Charles’ Law: At constant P and n,

     

  • Question 5/10
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    The correct order of magnitude of van der Waals constant b should be:

  • Question 6/10
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     molecules of urea are present in 100 mL of its solution. The concentration of urea solution is

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  • Question 7/10
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    An aqueous solution of glucose is 20% in strength. The volume in which 1 g mole of it is dissolved will be

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  • Question 8/10
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  • Question 9/10
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  • Question 10/10
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    Which of the following molecule doesn’t obey electron octet rule?

    Solutions

     

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