NCERT Class X Science Class: Chapter –2. Acids, Bases and Salts – Part-3
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Question 14:
Which of the following statements is correct about an aqueous solution of an acid and of a base?
(i) and (iii)
(ii) and (iii)
(i) and (iv)
(ii) and (iv)
Answer: D

Image Aqueous Solution of an Acid and Base
Question 15:
The of the gastric juices released during digestion is
(a) Less than 7
(b) More than 7
(c) Equal to 7
(d) Equal to 0
Answer: A

Image pH Solution for Acidic,Base and Neutral
Question 16:
Which of the following phenomena occur, when a small amount of acid is added to water?
Ionisation
Neutralisation
Dilution
Salt formation
(i) and (ii)
(i) and (iii)
(ii) and (iii)
(ii) and (iv)
Answer: B

Image Small Amount of Acid is Added to Water
Question 17:
Which one of the following can be used as an acid–base indicator by a visually impaired student?
Litmus
Turmeric
Vanilla essence
Petunia leaves
Answer: C
Question 18:
Which of the following substance will not give carbon dioxide on treatment with dilute acid?
Marble
Limestone
Baking soda
Lime
Answer: D

Image the Limewater
Question 19:
Which of the following is acidic in nature?
Lime juice
Human blood
Lime water
Antacid
Answer: A

Image Acidic, Base and Neutral in Nature