Acids, Bases and Salts Objective Questions

Acids, Bases and Salts Objective Questions

1-Acids

(A) are sour in taste

(B) change the color of the blue litmus to red.

(C) both (A) and (B)

(D) are bitter in taste

 

2- Bases

(A) are sour in taste

(B) change the color of the blue litmus to red.

(C) both (A) and (B)

(D) are bitter in taste

 

3-Following indicator(s) is(are) used to test acids and bases

(A) Litmus

(B) Methyl orange

(C) Phenolphthalein

(D) All of the above

 

4-When the litmus solution is neither acidic nor basic, its color is

(A) grey

(B) purple

(C) red

(D) pink

 

5-2NaOH + Zn

(A) Salt

(B) Hydrogen gas

(C) Salt + Hydrogen gas

(D) Salt + Oxygen gas

 

6-Following is (are) form(s) of calcium carbonate.

(A) Limestone

(B) Chalk

(C) Marble

(D) All of the above

 

7-Metal carbonate/Metal hydrogencarbonate + Acid

(A) Salt + Carbon dioxide

(B) Carbon dioxide + Water

(C) Salt + Water

(D) Salt + Carbon dioxide + Water

 

8-The reaction between an acid and a base to give a salt and water is known as a

(A) neutralization reaction

(B) exothermic reaction

(C) endothermic reaction

(D) none of the above

 

9-Which of the following is a neutralization reaction

(A) Base + Acid → Carbon dioxide + Salt

(B) Base + Acid → Salt + Hydrogen

(C) Base + Acid → Carbon dioxide + Water

(D) Base + Acid → Salt + Water

 

10-Which of the following is true for metal oxides

(A) Metal oxide + Acid → Carbon dioxide + Salt

(B) Metal oxide + Acid → Salt + Hydrogen

(C) Metal oxide + Acid → Carbon dioxide + Water

(D) Metal oxide + Acid → Salt + Water

 

ANSWERS:

1-(C), 2-(D), 3-(D), 4-(B), 5-(C), 6-(D), 7-(D), 8-(A), 9-(D), 10-(D)