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Science · 2026 · 3 marks
CBSE 2026 · Region 3 · Set 2 · Q26
Give reasons: 3 × 1=3 (i) Potato chips manufacturers fill the packet of chips with nitrogen gas. (ii) Respiration is an exothermic reaction. (iii)…
Give reasons : $\displaystyle 3 \times 1=3$
(i)
Potato chips manufacturers fill the packet of chips with nitrogen gas.
(ii)
Respiration is an exothermic reaction.
(iii)
Silver chloride is stored in dark coloured bottles.
Marking-scheme solution
(i)
To prevent the chips from getting oxidised/rancid.
(ii)
During respiration, glucose combines with oxygen in the cells of our body and gives energy.
(iii)
To prevent the decomposition of silver chloride into silver and chlorine by sunlight.
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CBSE Class 10 Science past-paper question from the 2026 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.