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Chemistry

Chemistry
Supersonic jet causes pollution by thinning of

O3 layer
CO2 layer
SO2 layer
O 2 layer

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Chemistry
The strongest acid of the following is

P-chlorophenol
M-nitrophenol
O-nitrophenol
P-nitrophenol

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Chemistry
Match the List-I with List-II and select the correct answer using the codes given belowList-I (Vitamin)List-II(Chemical compound)F.Vitamin A1.ThiaminG.Vitamin B12.RetinolH.Vitamin C3.Ascorbic acidJ.Vitamin E4.TocopherolCodes :FGHJA.4132B.2314C.4312D.2134

A
C
B
D

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Chemistry
Iron is prevented from rusting by coating with zinc. This process is called as

Corrosion
Reduction
Galvanisation
Sublimation

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Chemistry
Percentage of carbon in steel ranges from

1.5 to 3.0
3.0 to 4.0
4.0 to 6.0
0.1 to 1.5

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Chemistry
Adding Cl2 to benzene in the presence of AlCl3 is an example of :

Elimination reaction
Addition reaction
None of the options
Substitution reaction

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