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Science · 2023 · 3 marks
CBSE 2023 · Region 1 · Set 1 · Q28
(a) Suggest one remedial measure each to counteract the change in pH in human beings in following cases: (i) Production of too much acid in stomach…
(a)
Suggest one remedial measure each to counteract the change in pH in human beings in following cases :
(i)
Production of too much acid in stomach during indigestion
(ii)
Stung by a honey bee / nettle leaves
(b)
Fresh milk has a pH of 6. When it changes into curd will its pH increase or decrease ? Why ?
Marking-scheme solution
(a) (i) Use of antacids
(ii) Baking soda/mild base/dock plant.
(b) pH will decrease, as curd is more acidic than milk.
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CBSE Class 10 Science past-paper question from the 2023 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.