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Taksh from St John High School, Mumbai
Subject :NSO    Class : Class 7

The rain becomes acidic because W, sulphur dioxide and X dissolve in rain drops to form Y, Z and nitric acid respectively. W turns lime water milky. Identify W, X, Y and Z respectively.

A Carbon monoxide, Nitrogen, Calcium hydroxide, Sulphur
B Carbon monoxide, Nitrogen oxide, Carbon dioxide, Sulphuric acid
C Carbon dioxide, Nitrogen dioxide, Carbonic acid, Sulphuric acid
D Carbon dioxide, Nitrogen oxide, Calcium hydroxide, Sulphur.


Anything

Ans 1:

Taksh from St John High School, Mumbai
Class : Class 8

Ans 2:

Taksh from St John High School, Mumbai
Class : Class 8

Ans 3:

AISHA from K.V.No.-1,A.F.S.,SEC.-14, GURUGRAM
Class : Class 10
C

Ans 4:

Taksh from St John High School, Mumbai
Class : Class 8
Anything

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