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Chemistry - General Knowledge Questions
The metal used to recover copper from a solution of copper sulphate is
A)
Na
B)
Ag
C)
Hg
D)
Fe

Correct Answer :   Fe

Published On : July 3, 2020
Recent Updates in Chemistry - General Knowledge Questions
Q .
Freons cause great environmental damage. They are
A)
Mixed chlorofluoro-hydrocarbons
B)
Mixed sulphur gases
C)
Mixed carbon gases
D)
Free gases

Correct Answer :   Mixed chlorofluoro-hydrocarbons

Published On : June 12, 2021
Category : Chemistry
Q .
When ants bite, they inject
A)
Stearic acid
B)
Formic acid
C)
Methanol
D)
Glacial acetic acid

Correct Answer :   Formic acid

Published On : June 12, 2021
Category : Chemistry
Q .
The cycling of elements in an ecosystem is called
A)
Chemical cycles
B)
Geological cycles
C)
Geochemical cycles
D)
Biogeochemical cycles

Correct Answer :   Biogeochemical cycles

The biogenetic nutrients are essential elements required by organisms for their body-building and metabolism which are provided by earth and returned to earth after the death of organisms and/or through excreta of animals. So, the correct answer is 'Biogeochemical cycle'

Published On : June 12, 2021
Category : Chemistry

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