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Chemistry

Chemistry
'Plaster of Paris' is made by partial dehydration of

Gypsum salt
Blue vitriol
Green vitriol
Epsom salt

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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

B
D
C
A

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Chemistry
The fat of a common mussel-secretes a sticky glue that can be used to make heart implants. The unique chemical compound present in the glue is:

Hydroxy phenyl alanine
Phenyl alanine
Dihydroxy phenyl alanine
Amino phenyl alanine

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Chemistry
Copper substances when exposed to air gains a green coating due to the formation of:

CuO
CuCO3 Cu(OH)2
CuSO4
Cu(NO3)2

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Chemistry
Alcohol prepared by the distillation of wood is :

Glycerol
Ethyl alcohol
Methyl alcohol
Propyl alcohol

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Chemistry
The luster of a metal is due to

presence of free electrons
its high polishing
its high density
its chemical inertness

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