Question 5

(i) Evaporation occurs from the …………… of the water.

(ii) At sea-level, pure water boils at ……………

(iii) Condensation of steam takes place at ……………

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Solution

(i) Surface

(ii) 100°C

(iii) 100°C

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I I

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The pressure of $H_{2}$ required to make the potential of $H_{2}$ - electrode zero in pure water at 298 is

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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
(d) (ii) and (iv)

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Question 5 (i) Evaporation occurs from the …………… of the water. (ii) At sea-level, pure water boils at …………… (iii) Condensation of steam takes place at ……………

(i) Surface (ii) 100°C (iii) 100°C

Question 5

(i) Evaporation occurs from the …………… of the water.

(ii) At sea-level, pure water boils at ……………

(iii) Condensation of steam takes place at ……………

(i) Surface

(ii) 100°C

(iii) 100°C