Question

SECTION-A.
1.
What happens chemically when quick lime is added to water?
OR
Write the chemical equation in balanced ſom.
MnO, + HCI + MnCl2 + Cl2 + H 0
(1)
2
There are two jars A and B containing food materials. Food in jar 'A' is pickled with acetic acid while
'B is not. Food of which jar will stale first? Give reason for your choice.
(1)
3.
Name the functional group present in each of the following organic compounds:
(1) CHCI
(ii) CIBON
(1)
Sun appears reddish early in the morning. Give reason
(1)
5.
It is desired to obtain an erect image of an object, using a concave mirror of focal length 20 cm Wha
should be the range of distance of the object from the mirror?
(1)
6.
To view full length image of a distant tall building which mirror should be used? Give reason to suppo
your answer
OR
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Answer 1

Answer:

oh no.......................