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Chemistry

Chemistry
The hydronium ion is

H3O+
H2+
HO -
H+

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Chemistry
Which one of the following organic compounds has fruity smell?

Alcohol
Ester
Ether
Aldehyde

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Chemistry
Number of neutrons in an atom of hydrogen is

Zero
Two
Three
One

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Chemistry
Which one is a soluble salt in H2O

CaCl2
CuS
Zn(OH)2
PbCl2

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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

C
B
A
D

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Chemistry
Indane gas is mixture of

Butane and oxygen
Butane and propane
Methane and oxygen
Butane and hydrogen

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