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SET-1
SET-2
SET-3
SET-4
SET-5
SET-6
SET-7
SET-8
SET-9
1.
Fuse wire is made up of
A.
63%tin, 37%aluminium
B.
63%lead,37%aluminium
C.
63%tin, 37% Lead
D.
63%lead, 37%tin
Answer :
Answer & Solution
2.
Potassium permanganate is used to purify water as it is-
A.
Oxidizing
B.
Leaching
C.
Sterilizing
D.
Reducing
Answer :
Answer & Solution
3.
Which among the following is called ‘Laughing Gas’ popularity?
A.
Nitrogen penta oxide
B.
Nitrogen
C.
Nitric acid
D.
Nitrous oxide
Answer :
Answer & Solution
4.
The greenhouse gas that is a product of the combustion of the combustion of fossil fuels is-
A.
O3
B.
N2O
C.
CO2
D.
CH4
Answer :
Answer & Solution
5.
Which of the following processes makes direct use of oxygen?
A.
Citric Acid Cycle
B.
Electron transport
C.
Glycolysis
D.
Fermentation
Answer :
Answer & Solution
6.
The gas that filed the electric bulb is-
A.
Carbon dioxide
B.
Oxygen
C.
Nitrogen
D.
Hydrogen
Answer :
Answer & Solution
7.
Which of the following is used in beauty parlours for hair setting?
A.
Sulphur
B.
Silicon
C.
Chlorine
D.
Phosphorus
Answer :
Answer & Solution
8.
Excess fluoride in drinking water causes-
A.
Fluorosis
B.
Rickets
C.
Lung disease
D.
Intestinal infection
Answer :
Answer & Solution
9.
Graphite, carbon and diamonds are-
A.
Isotones
B.
Allotropes
C.
Isotopes
D.
Isomers
Answer :
Answer & Solution
10.
The chopping of an onion makes one cry because of the chemical of the chemical containing
A.
Bromine
B.
Nitrogen
C.
Sulphur
D.
Chlorine
Answer :
Answer & Solution
11.
A white solid ‘A’ gives off a gas which turns lime water milky. The residue is yellow but turns white on cooling. Now the solid is
A.
Lead carbonate
B.
Lear sulphate
C.
Zinc sulphate
D.
Zinc carbonate
Answer :
Answer & Solution
12.
The inert gas as beacon Light is
A.
Helium
B.
Neon
C.
Krypton
D.
Argon
Answer :
Answer & Solution
13.
Which of the following can not be formed
A.
He
B.
He2
C.
He+2
D.
He+
Answer :
Answer & Solution
14.
Hydrogen was discovered by
A.
Cavendish
B.
Priestley
C.
Boyle
D.
Charles
Answer :
Answer & Solution
15.
Ozone contains
A.
Hydrogen and carbon
B.
Oxygen and carbon
C.
Only oxygen
D.
Oxygen and nitrogen
Answer :
Answer & Solution
16.
Chemical mane of bleaching power is
A.
Calcium chloro hypochlorite
B.
Calcium dichloride
C.
Calcium chlorate
D.
Calcium hydrochlorite
Answer :
Answer & Solution
17.
Gas used in the production of vegetable ghee is
A.
Helium
B.
Nitrogen
C.
Hydrogen
D.
Oxygen
Answer :
Answer & Solution
18.
Which one among the following is used commonly in the dehydration of water
A.
Alum
B.
Bleaching power
C.
Boeax
D.
Soda power
Answer :
Answer & Solution
19.
Ozone is represented as ___
A.
Cl2O
B.
N2O
C.
O3
D.
H2O2
Answer :
Answer & Solution
20.
Which one of the following is odd
A.
Slaked lime
B.
Limestone
C.
Chalk
D.
Marble
Answer :
Answer & Solution
21.
Which of the following elements has the lowest melting points?
A.
Carbon
B.
Sodium
C.
Tin
D.
Hydrogen
Answer :
Answer & Solution
22.
The Chemical formula of Ammonium Chloride is____.
A.
NH4Cl2
B.
NH4Cl
C.
NH(D)2Cl
D.
NH4Cl3
Answer :
Answer & Solution
23.
Which of the following elements has the lowest melting point?
A.
Iodine
B.
Lead
C.
Iron
D.
Nitrogen
Answer :
Answer & Solution
24.
Filament of electric bulb is made of ___
A.
Tungsten
B.
Magnesium
C.
Tin
D.
Lead
Answer :
Answer & Solution
25.
Which of the following elements has the lowest melting point?
A.
Platinum
B.
Sodium
C.
Oxygen
D.
Tin
Answer :
Answer & Solution
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