Science, asked by nikhat25, 10 months ago

plz answer these question except first one

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Answered by viraaj13
0
except 1 we had to answer all questions???
Answered by ummkulsoom
2
2. it's an exothermic reaction
3. due to corrosion (rust)
4.metallic ores are reduced to obtain metals from them
5. Hydrated Copper Sulphate crystals [CuSO4.5H2O] are blue in colour. When copper sulphate crystals are heated strongly, they loose all the water of crystallization and form anhydrous copper sulphate [which is white in colour]. The water of crystallisation gives the crystals of their salts their shape and colour.
6. photolytic decompostion or photolysis

ummkulsoom: i was asking @viraaj13
nikhat25: okk
viraaj13: pls mark as brainliest
viraaj13: if you follow me i will also follow you
nikhat25: why??..you won't give a answer of my question
viraaj13: which question
nikhat25: nothing
ummkulsoom: tu chod de bhai
viraaj13: why
ummkulsoom: not ur cup of tea
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