1.

(d) () and (2(vii) Which of the following is an endother-mic process(1) Dilution of sulphuric acid(2) Sublimation of dry ice.(3) Condensation of water vapour(4) Evaporation of water vapour.(a) (1) and (3) (b) (2) only(c) (3) only (d) (2) and (4).

Answer»

the answer is d. (2) and (4) both sublimation and evaporation takes the heat away from the surface



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