28.If a certain solution process is endothermic and the solution is subsequently diluted then, 1.more heat will be absorbed by the same solution from the surrounding 2.more heat will be liberated to the surrounding 3. No heat will be absorbed or liberated

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Q. Solid calcium oxide reacts vigorously with water to form calcium hydroxide accompanied by liberation of heat. This process is called slaking of lime. Which among the following is (are) true about slaking of lime?
(i) It is an endothermic reaction
(ii) It is an exothermic reaction
(iii) The pH of the resulting solution will be more than seven
(iv) The pH of the resulting solution will be less than seven

Q. Assertion :A calorimeter can be used to measure the amount of heat lost or absorbed in a process
Reason: Calorimeters can be used to measure heat lost or gained by a system and its surroundings

Q. Solid calcium oxide reacts vigorously with water to form calcium hydroxide accompanied by the liberation of heat. This process is called slaking of lime. Calcium hydroxide dissolves in water to form its solution called lime water. Which among the following is (are) true about slaking of lime and the solution formed?
(i) It is an endothermic reaction.
(ii) It is an exothermic reaction.
(iii) The pH of the resulting solution will be more than seven.
(iv) The pH of the resulting solution will be less than seven.

Question 9

Solid calcium oxide reacts vigorously with water to form calcium hydroxide accompanied by liberation of heat. This process is called slaking of lime. Calcium hydroxide dissolves in water to form its solution called lime water. Which among the following is (are) true about slaking of lime and the solution formed?

(i) It is an endothermic reaction
(ii) It is an exothermic reaction
(iii) The pH of the resulting solution will be more than seven
(iv) The pH of the resulting solution will be less than seven

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

Q. By passing a certain amount of charge through NaCl solution, 9.2 litre of

C l_{2}

were liberated at STP when the same charge is passed through a nitrate solution of metal M, 7.467g of the metal was deposited. If the specific heat of metal is 0.216 cal/g, the formula of metal nitrate will be:

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