What happens : (I) If a drop of red litmus solution is added to the aqueous solution of substance 'Z'? (II) If CO2 gas…

CBSE Class 10 Science PYQ · Acids, Bases and Salts · Baking soda · 2 Marks · March 2026 · Standard

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312 Marks · March 2026 · Standard
What happens :
(I) If a drop of red litmus solution is added to the aqueous solution of substance 'Z'?
(II) If $\ce{CO2}$ gas is passed through ammoniacal solution of aqueous $\ce{NaCl}$ ?
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(a)
X - Chlorine gas
Y -Hydrogen gas
(b)
$\ce{2NaCl(aq) + 2H2O(l) -> 2NaOH(aq) + Cl2(g) + H2(g)}$
(Deduct ½ marks for no/incorrect balancing)
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