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Chemistry

Chemistry
Which one of the following gases has the highest calorific value?

Indane gas
Natural gas
Coal gas
Water gas

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Chemistry
Iodex, a pain relief balm, has the smell of ________ .

Butyl salicylate
Propyl salicylate
Ethyl salicylate
Methyl salicylate

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Chemistry
The tip of the match-stick contains

White phosphorus
Phosphorus pentoxide
Red phosphorus
Phosphorus trichloride

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Chemistry
The third shell of an atom can have a maximum of ______ electrons

15
13
21
18

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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
D
B
C

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Chemistry
Colour imparted to the Bunsen flame by strontium salt is

Apple-green
Crimson red
Brick red
Bluish green

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