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Chemistry

Chemistry
How many neutrons are there in 92U238 atom ?

238
330
146
92

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Chemistry
Which of the following produces highest amount of energy upon oxidation?

An alkane
Glucose
Protein
Fat

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Chemistry
Which of the following laser types is used in a laser printer?

Semiconductor laser
Gas laser
Dye laser
Excimer laser

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Chemistry
An example of heterocyclic compound is

Furan
Naphthalene
Anthracene
Benzene

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Chemistry
Sour milk contains

Tartaric acid
Acetic acid
Citric acid
Lactic acid

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Chemistry
Highly toxic gas which causes headache, visual difficulty, paralysis and even death is

CO2
O3
CO
All of these

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