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Chemistry Test - 17

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Chemistry Test - 17
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Weekly Quiz Competition
  • Question 1
    3 / -1

    With K4[Fe(CN)6], Cu2+ ions give

    Solution

    With K4[Fe(CN)6], Cu2+ ions give a reddish brown ppt.

  • Question 2
    3 / -1

    The most common food preservative is

    Solution

    Sodium benzoate has the chemical formula NaC6H5CO2; it is a widely used food preservative.

  • Question 3
    3 / -1

    An organic compound weighing 0.31 g gave 0.444 g of magnesium pyrophosphate in the estimation of phosphorus by Carius method. The % of P in the compound is

    Solution

  • Question 4
    3 / -1

    Consider the following compounds:

    (i) Chloroethene

    (ii) Benzene

    (iii) 1,3-Butadiene

    (iv) 1,3,5-Hexatriene

    All the carbon atoms are sp2 hybridised in

    Solution

    All the carbon atoms in the given compounds are sp2 hybridised.

  • Question 5
    3 / -1

    Which of the following will give CH3COOH (acetic acid) on hydrolysis?

    Solution

  • Question 6
    3 / -1

    Which of the following aldehydes gives Cannizzaro's reaction when heated with a strong alkali?

    Solution

    The aldehydes with no H atom on the carbon atom next to the carbonyl group give Cannizzaro's reaction.

  • Question 7
    3 / -1

    The coupling of diazonium salt of 4-aminobenzene sulphonic acid with N, N-dimethyl benzamine produces

    Solution

  • Question 8
    3 / -1

    A cracking sound is produced when crystals of NaCl are thrown in fire. This is due to the

    Solution

    When crystals of sodium chloride are thrown in fire, water comes out of them with a cracking sound.

  • Question 9
    3 / -1

    Two stereoisomers are given below. These are known as

    Solution

    Diastereomerism occurs when two or more stereoisomers of a compound have different configurations at one or more (but not all) of the equivalent stereocentres and are not mirror images of each other. Thus,

  • Question 10
    3 / -1

    The conversion of primary aromatic amines into diazonium salts is known as

    Solution

    The process of conversion of primary aromatic amines into diazonium salts is known as diazotization.

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