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ICSE Class 10 Chemistry Question 2 of 23

Solved Sample Paper 5 — Question 5

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5
Question

Question 1(v)

In an exothermic process, energy is released in the form of heat or light.

Which of the following could be exothermic processes?

P. Sublimation of camphor crystals

Q. Reaction of water with quick lime

R. Dilution of an acid

  1. Only P
  2. Only Q
  3. Only R
  4. Both Q and R
Answer

Both Q and R

Reason — Reaction of water with quick lime and Dilution of an acid, both are exothermic processes. Sublimation of camphor crystals is an endothermic process.