Which of the following are exothermic processes?
I. Melting ice cubes
II. Respiration
III. Burning of a candle
IV. Evaporation of water

I only

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I & II

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I & III

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II & III

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Solution

The correct option is D II & III
Exothermic process describes a process or reaction in which heat is released along with the formation of products.
Respiration and burning of a candle are exothermic processes.

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Which of the following process / processes release heat ?
(i) condensation (ii) vaporisation (iii) freezing (iv) melting

(a) only (i) (b) only (iv) (c) (i) and (iii) (d) (ii) and (iv)

Q. (a) What do you understand by exothermic and endothermic reactions?
(b) Give one example of an exothermic reaction and one of an endothermic reaction.
(c) Which of the following are endothermic reactions and which are exothermic reactions?
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Q. Which of the following are exothermic processes?
I. Melting ice cubes
II. Respiration
III. Burning of a candle
IV. Evaporation of water

Question 12

Which of the following is (are) an endothermic process(es)?

(i) Dilution of sulphuric acid.
(ii) Sublimation of dry ice.
(iii) Condensation of water vapours.
(iv) Evaporation of water.

(a) (i) and (iii)
(b) (ii) only
(c) (iii) only
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Question 4

Which of the following are exothermic processes?

(i) Reaction of water with quicklime
(ii) Dilution of an acid
(iii) Evaporation of water
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(a) (i) and (ii)
(b) (ii) and (iii)
(c) (i) and (iv)
(d) (iii) and (iv)

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Which of the following are exothermic processes? I. Melting ice cubes II. Respiration III. Burning of a candle IV. Evaporation of water

The correct option is D II & IIIExothermic process describes a process or reaction in which heat is released along with the formation of products. Respiration and burning of a candle are exothermic processes.

Which of the following are exothermic processes?
I. Melting ice cubes
II. Respiration
III. Burning of a candle
IV. Evaporation of water

The correct option is D II & III
Exothermic process describes a process or reaction in which heat is released along with the formation of products.
Respiration and burning of a candle are exothermic processes.