BPSC – Combined Competitive Examination · प्रश्न 108
Which of the following are exothermic processes? i. Evaporation of water ii. Dilution of an acid (H₂SO₄) iii. Reaction of water with quicklime iv. Sublimation of camphor
उत्तर दाखवा आणि स्पष्टीकरण
उत्तर: (B) ii and iii
स्पष्टीकरण
Evaporation and sublimation absorb heat; diluting H₂SO₄ and CaO + H₂O release heat.
- (A) चूक
Wrong: sublimation absorbs heat.
- (B) बरोबर
Correct: diluting acid and slaking lime both release heat.
- (C) चूक
Wrong: both are endothermic.
- (D) चूक
Wrong: evaporation is endothermic.