Chemistry - General Knowledge Questions

1 .
The ore which is found in abundance in India is
A)
monazite
B)
fluorspar
C)
bauxite
D)
magnetite

Correct Answer :   monazite

2 .
The most extensive, commercially useful source of thorium as monazite sand occurs in India at
A)
Orissa coast
B)
Travancore coast
C)
West Bengal coast
D)
Gujarat coast

Correct Answer :   Travancore coast

3 .
The Latin word formica means ant. The name formic acid is derived from this Latin word because
A)
this acid was first obtained by the distillation of ants
B)
this acid, in ancient times, was used to eliminate ant-hills
C)
this corrosive acid is secreted by ants to drive away their enemies
D)
ants are attracted by the odour of this acid

Correct Answer :   this acid was first obtained by the distillation of ants

4 .
The metal does not give H2 on treatment with dilute HCL is
A)
Zn
B)
Fe
C)
Ag
D)
Ca

Correct Answer :   Ag

5 .
The most abundant rare gas in the atmosphere is
A)
He
B)
Ne
C)
Xe
D)
Ar

Correct Answer :   Ar

6 .
The human body is made up of several chemical elements; the element present in the highest proportion (65%) in the body is
A)
carbon
B)
hydrogen
C)
oxygen
D)
nitrogen

Correct Answer :   oxygen

7 .
The metal that is used as a catalyst in the hydrogenation of oils is
A)
Ni
B)
Pb
C)
Cu
D)
Pt

Correct Answer :   Ni

8 .
The hottest part of the gas flame is known as
A)
luminous zone
B)
dark zone
C)
blue zone
D)
non-luminous zone

Correct Answer :   non-luminous zone

9 .
The octane number of zero is assigned to
A)
2-methyl octane
B)
n-heptane
C)
iso-octane
D)
3-methyl octane

Correct Answer :   n-heptane

10 .
The number of electrons presents in H+ is
A)
zero
B)
one
C)
two
D)
three

Correct Answer :   zero

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