Class 10 Chemistry



Acid Base and Salt

NCERT Exemplar Problems & Solution MCQ 3

Which of the following is used for dissolution of gold?

  • Hydrochloric acid
  • Sulphuric acid
  • Nitric acid
  • Aqua regia
    Answer: (d) Aqua regia

Which of the following is not a mineral acid?

  • Hydrochloric acid
  • Citric acid
  • Sulphuric acid
  • Nitric acid
    Answer: (b) Citric acid

Which among the following is not a base?

  • NaOH
  • KOH
  • NH4OH
  • C2H5OH
    Answer: (d) C2H5OH

Which of the following statements is not correct?

  • All metal carbonates react with acid to give a salt, water and carbon dioxide
  • All metal oxides react with water to give salt and acid
  • Some metals react with acids to give salt and hydrogen
  • Some non metal oxides react with water to form an acid
    Answer: (b) All metal oxides react with water to give salt and acid.

Match the chemical substances given in Column (A) with their appropriate application given in

Column A Column B
(A) Bleaching powder (i) Preparation of glass
(B) Baking soda (ii) Production of H2 and Cl2
(C) Washing soda (iii) Decolourisation
(D) Sodium chloride (iv) Antacid

  • A—(ii), B—(i), C—(iv), D—(iii)
  • A—(iii), B—(ii), C—(iv), D—(i)
  • A—(iii), B—(iv), C—(i), D—(ii)
  • A—(ii), B—(iv), C—(i), D—(iii)
    Answer: (c) A – (iii), B – (iv), C – (i), D – (ii)

Equal volumes of hydrochloric acid and sodium hydroxide solutions of same concentration are mixed and the pH of the resulting solution is checked with a pH paper. What would be the colour obtained?

  • Red
  • Yellow
  • Yellowish green
  • Blue
    Answer: (c) Yellowish green

Which of the following is(are) true when HCl (g) is passed through water?

  • It does not ionise in the solution as it is a covalent compound.
  • It ionises in the solution
  • It gives both hydrogen and hydroxyl ion in the solution
  • It forms hydronium ion in the solution due to the combination of hydrogen ion with water molecule
  • (i) only
  • (iii) only
  • (ii) and (iv)
  • (iii) and (iv)
    Answer: (c) (ii) and (iv)

Which of the following statements is true for acids?

  • Bitter and change red litmus to blue
  • Sour and change red litmus to blue
  • Sour and change blue litmus to red
  • Bitter and change blue litmus to red
    Answer: (c) Sour and change blue litmus to red

Which of the following are present in a dilute aqueous solution of hydrochloric acid?

  • H3O+ + Cl
  • H3O+ + OH
  • Cl + OH
  • un-ionised HCl
    Answer: (a) H3O+ + Cl

Identify the correct representation of reaction occurring during chloralkali process

  • 2NaCl(l) + 2H2O(l) ⇨ 2NaOH(l) + Cl2(g) + H2(g)
  • 2NaCl(aq) + 2H2O(aq) ⇨ 2NaOH(aq) + Cl2(g) + H2(g)
  • 2NaCl(aq) + 2H2O(l) ⇨ 2NaOH(aq) + Cl2(aq) + H2(aq)
  • 2NaCl (aq) + 2H2O (l) ⇨ 2NaOH (aq) + Cl2(g) + H2(g)
    Answer: (d) 2NaCl (aq) + 2H2O (l) ⇨ 2NaOH (aq) + Cl2(g) + H2(g)

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Acid

Base

Common properties

Strength

Salts

Common Salt

NCERT Intext Solution

NCERT Intext Solution-2

NCERT Exercise Solution

NCERT Exercise Solution-2

Exemplar MCQs-1

Exemplar MCQs-2

Exemplar Short Answer-1

Exemplar Short Answer-2

Exemplar Long Answer-1

Exemplar Long Answer-2

Quiz