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Chemistry

Chemistry
Which one of the following is most acidic

Al22O3
MgO
Na2O
CaO

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Chemistry
The major use of sulphur is in the manufacture of

H2S
H2SO4
Fungicide
SO2

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Chemistry
Which of the following is a natural dye ?

Aniline blue
Alizarin
Crystal violet
Phenolphthalein

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Chemistry
Quartz is a crystalline form of

Glass
Limestone
Silica
Alumina

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Chemistry
The strongest acid of the following is

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

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Chemistry
The constituents of automobile exhaust that can cause cancer is/are :

Carbon monoxide
Oxides of nitrogen
Polycyclic hydrocarbons
Lead

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