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Chemistry

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

Malathion
Ethephon
Atrazine
Isoproturan

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Chemistry
The metal that is used as a catalyst in the hydrogenation of oils is

Pb
Ni
Cu
Pt

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Chemistry
Which is not an anasthetic agent in surgical operations?

Acetone
Ether
Chloroform
Nitrous oxide

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Chemistry
The number of d-electrons in Fe2+ (Z = 26) is not equal to that of

p-electrons in Ne(Z = 10)
d-electrons in Fe(Z = 26)
s-electrons in Mg(Z = 12)
p-electrons in CI(Z = 17)

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Chemistry
The inexpensive and commonly used variety of glass is called soda glass.

was initially used for storing sodium carbonate
is made using soda(sodium carbonate)
was used initially for making bottles of soda(carbonated drink)
is made using soda lime

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Chemistry
One of the following is used to dissolve noble metals. That is

Sulphuric acid
Aqua ragia
Nitric acid
Hydrochloric acid

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