12th Grade > Chemistry
HYDROGEN MCQs
Total Questions : 30
| Page 1 of 3 pages
Answer: Option B. -> 50%H2SO4
:
B
50% Sulphuric acid is used for large scale manufacture of H2O2
:
B
50% Sulphuric acid is used for large scale manufacture of H2O2
Answer: Option A. -> TiO2
:
A
TiO2+2H2SO4→Ti(SO4)2+2H2O
H2O2+Ti(SO4)2.2H2O→H2TiO4+2H2SO4 Orange red
:
A
TiO2+2H2SO4→Ti(SO4)2+2H2O
H2O2+Ti(SO4)2.2H2O→H2TiO4+2H2SO4 Orange red
Answer: Option D. -> Nuclear radius
:
D
The number of neutrons differ hence the nuclear radius
:
D
The number of neutrons differ hence the nuclear radius
Answer: Option D. -> Dipole moment
:
D
Critical temperature of water is more than O2due to its dipole moment
(Dipole moment of water = 1.84 D; Dipole moment ofO2=zero D).
:
D
Critical temperature of water is more than O2due to its dipole moment
(Dipole moment of water = 1.84 D; Dipole moment ofO2=zero D).
Answer: Option C. -> T2
:
C
As atomic mass is more.
:
C
As atomic mass is more.
Answer: Option A. -> Magnesium bicarbonate
:
A
Chlorides and sulphates of Mg and Ca produces permanent hardness whereas bicarbonates of Mg and Ca produces temporary hardness.
:
A
Chlorides and sulphates of Mg and Ca produces permanent hardness whereas bicarbonates of Mg and Ca produces temporary hardness.
Answer: Option B. -> Nuclear reactor
:
B
Heavy water is used in nuclear reactors to slow down fast moving neutrons and hence ensures that a certain minimum number of radioactive fission reactions can take place.
:
B
Heavy water is used in nuclear reactors to slow down fast moving neutrons and hence ensures that a certain minimum number of radioactive fission reactions can take place.
Answer: Option D. -> Heated aluminium oxide
:
D
H2 will not reduce heated Al2O3 as aluminium is more reactive than hydrogen.
:
D
H2 will not reduce heated Al2O3 as aluminium is more reactive than hydrogen.
Answer: Option A. -> Soda ash, alumina, silica
:
A
Permutit is sodium aluminium silicate
:
A
Permutit is sodium aluminium silicate
Answer: Option D. -> Disproportionation
:
D
Decomposition of H2O2is Disproportionate reaction
:
D
Decomposition of H2O2is Disproportionate reaction
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