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Chemistry

Chemistry
Which of the following is not a nucleon?

Positron
Neutron
Electron
Proton

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

Argon
Neon
Helium
Krypton

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Chemistry
Which one of the following is not a fertilizer?

Ammonium sulphate
Calcium sulphate
Calcium ammonium nitrate
Potassium nitrate

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Chemistry
Total number of naturally occurring elements

98
110
92
62

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Chemistry
In a reaction of the type A+B ? C+D one could ensure it to be a first order reaction by :

Increasing the concentration of a reactant
Increasing the temperature
Increasing the concentration of a product
Adding a catalyst

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Chemistry
Which one is the most reactive gaseous element

Iodine
Bromine
Chlorine
Flourine

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MORE MCQ ON Chemistry

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