Mild non-corrosive basic salt is (A) Ca(OH)_2 (B) NaCl (C) NaOH (D) NaHCO_3

ScienceCBSE Class 10 · Sample paper, session 2023-24 · 1 mark · MCQ

CBSE Class 10 Science sample paper 2023-24: question 3

From the official CBSE sample question paper for 2023-24, section A, question 3, for 1 mark. Try it first; the hints and our step-by-step solution are below.

Q3 · 1 mark · MCQAcids, Bases and Salts

Mild non-corrosive basic salt is

(A) $Ca (OH)_{2}$
(B) $NaCl$
(C) $NaOH$
(D) $NaHC O_{3}$

Source: official sample paper from cbseacademic.nic.in (PDF). See it in the full Sample paper 2023-24.

Hints

Open one hint at a time and try again before the next.

Hint 1

Remove the options that are bases rather than salts.

Hint 2

Which salt is used as an antacid and in baking?

Step-by-step solution

Each step shows the marks it earns, as an examiner would award them. Checked by an independent re-solve from the question paper.

$Ca (OH)_{2}$ and $NaOH$ are bases, not salts, and $NaOH$ is corrosive. $NaCl$ is a neutral salt.
Sodium hydrogencarbonate, $NaHC O_{3}$ (baking soda), is a mild, non-corrosive basic salt. It is used in antacids. So the answer is option (D).
1 mark

Answer: $NaHC O_{3}$ , option (D)

Where the marks are

Chooses baking soda $NaHC O_{3}$ as the mild non-corrosive basic salt (1 mark)

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Chapter: Acids, Bases and Salts (notes, formulas, where marks are lost and every past question)

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CBSE Class 10 Science sample paper 2023-24: question 3

Hints

Step-by-step solution

Revise the chapter

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