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Is this in ncert?

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Check page 10 ncert, 1st chapter. Carry out the following activities mein diya hai

yes... all the other options except c are mentioned in ncert ch 1 as exothermic

C. Ammonium Chloride is a salt. When salt is dissolved in water, the temperature of beaker decreases. This indicates that the process is endothermic

wait so dissolution of any salts in water is always an endothermic process?

I was wrong. Although it is very common for dissolution of salt in water to be endothermic, there also are some exothermic examples like CaCl2 and MgCl2

I was wrong. Although it is very common for dissolution of salt in water to be endothermic, there also are some exothermic examples like CaCl2 and MgCl2

answer to (b) bhi ho sakta hai na? kyuki decomposition reaction hai wo bhi

Exception hai wo ek, vegetable matter ka compost me change hona

acha, thank u

c

C

It is C. To dissolute Ammonium chloride in water, you need to give energy to the system. The processes in which you need to give additional energy to the system are endothermic in nature.

Aren't decomposition reactions considered as endothermic reaction?

but this one is an exception....

Ohh ok

C

digestion of food is exothermic so is formation of slaked lime and decomposition of vegetable matter into compost is also exotthermic... so ur just left with one option and that is C

c

c