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 Multiple Choice QuestionsMultiple Choice Questions

111.

Which of the following is a weak acid?

  • C6H6

  • CH3COOH

  • CH2=CH2

  • CH3COCH3


112.

The hydrogen ion concentration of a solution is 3.98 × 10-6 mole per liter. The pH value of this solution will be

  • 6.0

  • 5.8

  • 5.4

  • 5.9


113.

The solution of BiCl3 in dil. HCI when diluted with water, white precipitate is formed which is

  • Bismith oxychloride

  • Bismith oxide

  • Bismith hydroxide

  • None of the above


114.

The strongest acid is

  • acetic acid

  • trichloroacetic acid

  • dichloroacetic acid

  • monochloroacetic acid


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115.

Which of the following is the strongest base?

  • C6H5NH2

  • CH3NH2

  • NH3

  • CH3CONH2


116.

The degree of ionization of 0.4 M acetic acid will be (Ka = 1.8 × 10)

  • 6.71 × 10-3

  • 1.6 × 10-3

  • 0.4 × 1.8 × 10-3

  • 1.8 × 10-5


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117.

The product of molar concentrations of hydrogen ions and hydroxide ions in a 0.01 M aqueous solution of sodium chloride is known as

  • hydrolysis constant of salt

  • dissociation constant of acid

  • dissociation constant of base

  • ionic product of water


D.

ionic product of water

Sodium chloride is a salt of strong base NaOH and strong acid HCl. In its aqueous solution, following equilibrium is observed.

NaCl + H2 Na+ + Cl-+ H2O

Hence, no hydrolysis takes place in this case, and the solution remains neutral. Thus, here the product of molar concentrations of hydrogen ions and hydroxide ions is ionic product of water.


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118.

A solution contains Cl-, I- and SO43- ions in it. Which of the following ion is capable to precipitate all of the above when added in this solution?

  • Pb2+

  • Ba2+

  • Hg2+

  • Cu2+


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119.

What is the pH of millimolar solution of ammonium hydroxide which is 20% dissociated?

  • 3.699

  • 10.301

  • 4.691

  • 9.301


120.

Which of the following compounds is most acidic in nature?

  • 4-chlorobutanoic acid

  • 3-chlorobutanoic acid

  • 2-chlorobutanoic acid

  • Butanoic acid


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