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Chemistry Test - 35

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Chemistry Test - 35
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Weekly Quiz Competition
  • Question 1
    1 / -0

    On ozonolysis, ethylene gives:

    Solution

    Ozonolysis is the cleavage of an alkene or alkyne with ozone to form organic compounds in which the multiple carboncarbon bond has been replaced by a double bond to oxygen. Ethylene on ozonolysis yields aldehydes.
    Hence, the correct option is (A)
  • Question 2
    1 / -0

    IUPAC name of ester is:

    Solution

    IUPAC name of ester is alkyl alkanoate as it contains two alkyl group on both side (′RCOOR′).
    Hence, the correct option is (B)

  • Question 3
    1 / -0

    Rubbing alcohol, used for rubdowns, on its evaporation reduces fever. It is cheaper and has replaced ethanol for this purpose. Its name is:

    Solution

    Rubbing alcohol, used for rubdowns, on its evaporation reduces fever. It is cheaper and has replaced ethanol for this purpose. Its name is Isopropyl alcohol. Its IUPAC name is propan- 2 -ol.
    Hence, the correct option is (D)
  • Question 4
    1 / -0

    When acetaldehyde is heated with Fehling's solution, it gives a precipitate of :

    Solution
    Fehlings solution is a tartaric acid complex of cupric ions. When acetaldehyde is heated with Fehling's solution, it gives a red precipitate of \(C u_{2} O\) \(C H_{3} C H O+2 C u^{2+}+5 O H^{-} \stackrel{\Delta}{\longrightarrow} C H_{3} C O O^{-}+C u_{2} O \downarrow+3 H_{2} O\)
    Acetaldehyde is oxidized to acetate ion and cupric ions are reduced to cuprous oxide.
    Hence, the correct option is (D)
  • Question 5
    1 / -0

    IUPAC name of the above given compound is:

    Solution

    The given compound is an aromatic aldehyde. It contains an amino group which is para to aldehyde group. Hence, the systematic name is 4-amino benzene carbaldehyde.
    Hence, the correct option is (A)

  • Question 6
    1 / -0

    Ammonical silver nitrate solution is called :

    Solution

    Tollen's reagent is ammonical silver nitrate solution;

    [Ag(NH3)2]+
    Hence, the correct option is (A)

  • Question 7
    1 / -0

    Phenol is acidic because of the resonance stabilization of its conjugate base, namely:

    Solution

    The conjugate base of phenol (C6H5OH) is phenoxide (C6H5O−) also called phenolate ion.

    Hence, the correct option is (A)

  • Question 8
    1 / -0

    When CH3MgI is made to react with acetone and the addition product is hydrolysed, we get a/an:

    Solution

    When \(C H_{3} M g I\) is made to react with acetone and the addition product is hydrolysed, we get a tertiary alcohol.
    Hence, the correct option is (C)
  • Question 9
    1 / -0

    Which of the following ethers is present in clove oil?

    Solution

    Eugenol is present in clove oil.
    Hence, the correct option is (B)

  • Question 10
    1 / -0

    Enzymes involved used in the fermentation of cane sugar to alcohol?

    Solution

    Invertase and zymase enzymes are used in the fermentation of cane sugar to alcohol.
    Hence, the correct option is (B)

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