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Chemistry

Chemistry
The material used in solar cells contains

Tin
Thallium
Silicon
Caesium

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Chemistry
An element of atomic no. 29 belongs to

D-block
P-block
F-block
S-block

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Chemistry
Sour taste of lemon is due to the presence of which of the following ?

Acetic acid
Oxalic acid
Citric acid
Formic acid

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Chemistry
Which among the following is used to dilute oxygen in the gas cylinders used by divers ?

Helium
Neon
Argon
Krypton

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Chemistry
The antiseptic compound present in dettol is

Iodine
Enloroxylenol
Cresol
Biothional

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Chemistry
What is the mass percentage of oxygen in carbon dioxide (CO2)

0.658
0.727
0.305
0.509

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MORE MCQ ON Chemistry

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