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Chemistry

Chemistry
The number of waves in n x 10th Bohr's orbit are

n-2
n2
n
n3

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Chemistry
Trinitrotoluene is

Used to fuse two metals
Used as an abrasive
Used as an explosive
Used to melt metals

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Chemistry
Magnalium is an alloy of

Magnesium and Tin
Manganese and Magnesium
Aluminium and Magnesium
Aluminium and Zinc

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Chemistry
The most abundant element in the human body is

Iron
Oxygen
Nitrogen
Carbon

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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

D
C
A
B

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Chemistry
Which of the following gases will effuse out of football bladder most quickly ?

O2
H2
He
N 2

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