CBSE 10th Standard Science Subject Acids, Bases and Salts Ncert Exemplar MCQ Questions With Solution 2021
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CBSE 10th Standard Science Subject Acids, Bases and Salts Ncert Exemplar MCQ Questions With Solution 2021
10th Standard CBSE
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Reg.No. :
Science
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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?
(a)Red
(b)Yellow
(c)Yellowish green
(d)Blue
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Which of the following is (are) true when HCl (g) is passed through water?
(i) It does not ionise in the solution as it is a covalent compound.
(ii) It ionises in the solution
(iii) It gives both hydrogen and hydroxyl ion in the solution
(iv) It forms hydronium ion in the solution due to the combination of hydrogen ion with water molecule(a)(i) only
(b)(iii) only
(c)(ii) and (iv)
(d)(iii) and (iv)
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Which of the following statement is true for acids?
(a)Bitter and change red litmus to blue
(b)Sour and change red litmus to blue
(c)Sour and change blue litmus to red
(d)Bitter and change blue litmus to red
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Which of the following are present in a dilute aqueous solution of hydrochloric acid?
(a)\(H_3O^++CH^-\)
(b)\(H_3O^++OH^-\)
(c)\(Cl^-+OH^-\)
(d)unionised HCl
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Identify the correct representation of reaction occurring during chlor-alkali process
(a)\(2NaCl(l)+2H_2O(l)\rightarrow2NaOH(l)+Cl_2(g)+H_2(g)\)
(b)\(2NaCl(aq)+2H_2O(aq)\rightarrow2NaOH(aq)+Cl_2(g)+H_2(g)\)
(c)\(2NaCl(aq)+2H_2O(l)\rightarrow2NaOH(aq)+Cl_2(aq)+H_2(aq)\)
(d)\(2NaCl(aq)+2H_2O(l)\rightarrow2NaOH(aq)+Cl_2(g)+H_2(g)\)
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CBSE 10th Standard Science Subject Acids, Bases and Salts Ncert Exemplar MCQ Questions With Solution 2021 Answer Keys
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(c)
Yellowish green
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(c)
(ii) and (iv)
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(c)
Sour and change blue litmus to red
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(a)
\(H_3O^++CH^-\)
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(d)
\(2NaCl(aq)+2H_2O(l)\rightarrow2NaOH(aq)+Cl_2(g)+H_2(g)\)
