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Chemistry

Chemistry
Which one of the following chemicals helps in fruit ripening?

Isoproturan
Ethephon
Malathion
Atrazine

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Chemistry
The elements in the modern Periodic table are arranged according to their

Atomic number
Neutron number
Atomic Weight
Mass number

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Chemistry
An emulsion is a colloidal solution of

Gas in solid
Liquid in liquid
Solid in Solid
Solid in liquid

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Chemistry
Which of the following is not a commercial source of energy?

Coal
Natural Gas
Petroleum
Firewood

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Chemistry
The number of g-molecule of oxygen in 6.02 x 1024CO molecules is

1 gram of molecule
10 gram of molecule
0.5 gram of molecule
5 gram of molecule

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Chemistry
Brass is a solution of molten copper in

Molten tin
Gaseous zinc
Solid zinc
Molten zinc

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