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Chemistry

Chemistry
Ozone depletion in the stratosphere is mainly caused by

SO2
NO
NO2
Chlorogluorocarbons

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Chemistry
Interveinal necrotic spots on leaves appear due to

SO2injury
O3injury
NO2injury
HF injury

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Chemistry
If all bullets could not be removed from gun shot injury of a man, it may cause poisoning by

Lead
Iron
Mercury
Arsenic

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Chemistry
Match the List-I with List-II and select the correct answer using the codes given below the listsList-I (Green house gas)List-II(Major source)F.Carbondioxide1.Enteric fermentation in cattleG.Methane2.Burning of fossilH.Chloroflro carbons3.Mercury compounds in waste waterJ.Nitrous oxide4.Nylon production 5.Air conditioner and refrigeration unitsCodes :FGHJA.2154B.3421C.3241D.1234

D
B
C
A

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Chemistry
The isomerism which exists between CH3CHCI2 and CH2CI. CH2CI is

functional group isomerism
metamerism
chain isomerism
positional isomerism

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Chemistry
________ gives hardness to stainless steel.

Zinc
Carbon
Tin
Lead

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