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General Knowledge - Chemistry

Exercise : Chemistry - Section 1
  • Chemistry - Section 1
61.
The most important ore of aluminium is
bauxite
magnetite
haematite
monazite
Answer: Option
Explanation:
No answer description is available. Let's discuss.
62.
The organic reaction represented by equation CH3 - CH = O + H2NOH gives CH3 - CH - NH + H2O is an example of
an addition reaction
a condensation reaction
an oxidation reaction
an elimination reaction
Answer: Option
Explanation:
No answer description is available. Let's discuss.
63.
The number of electrons presents in H+ is
zero
one
two
three
Answer: Option
Explanation:

H+ is a hydrogen ion, and it is an ion because it LOST an electron. Electrons are negatively charged. When an atom gains electrons it will have NEGATIVE charges.

So it has zero electron.

64.
The hottest part of the gas flame is known as
luminous zone
dark zone
blue zone
non-luminous zone
Answer: Option
Explanation:
No answer description is available. Let's discuss.
65.
The human body is made up of several chemical elements; the element present in the highest proportion (65%) in the body is
carbon
hydrogen
oxygen
nitrogen
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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