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Published on: 01/09/2022
QB365 provides a detailed and simple solution for every Possible Creative Questions in Class 12 Chemistry Subject - p - Block Elements - II, English Medium. It will help Students to get more practice questions, Students can Practice these question papers in addition to score best marks.
Download Tamil Nadu 12th Standard Chemistry question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
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1.
Which one of the following orders is not in accordance with the property stated against it?
F2 > CI2 > Br2 > I2: Bond dissociation energy
HI > HBr > HCI > HF: Acidic property in water
F2 > Cl2 > Br2 > l2: Oxidising power
F2 > Cl2 > Br2 > l2: Electronegativity
2.
Oxalic acid on heating with cone H2SO4 gives ______.
CO only
CO2 only
CO2 + H2O
CO + CO2 + H2O
3.
Least volatile hydrogen halide is ______.
HF
HCI
HBr
HI
4.
When Copper is heated with cone HNO3 it produces
Cu (NO3)2 and N2O
Cu (NO3)2 and NO2
Cu (NO3)2 and NO
Cu (NO3)2 NO and N2O
5.
Hot concentrated H2SO4 is moderately strong oxidising agent which of the following reactions does not show oxidising behaviour?
\(Cu+2H_{ 2 }{ SO }_{ 4 }\longrightarrow { CuSO }_{ 4 }+{ SO }_{ 2 }+{ 2H }_{ 2 }O\)
\(Cu+2H_{ 2 }{ SO }_{ 4 }\longrightarrow { CuSO }_{ 4 }+{ SO }_{ 2 }+{ 2H }_{ 2 }O\)
\(Cu+2H_{ 2 }{ SO }_{ 4 }\longrightarrow { CuSO }_{ 4 }+{ SO }_{ 2 }+{ 2H }_{ 2 }O\)
\({ CaF }_{ 2 }+{ H }_{ 2 }SO_{ 4 }\longrightarrow { CaCO }_{ 4 }+2HF\)
6.
Pick the wrong one among the following
F2 - Yellow
Br2 - Red
Cl2 - Colourless
I2- Violet
7.
S-S bond is present in _______.
H2S2O7
H2SO5
H2S2O6
H2S2O6
8.
Allotrope of sulphur which shows paramagnetic behaviour _______.
S8- Rhombic
S8- Monoclinic
S2- In vapour phase
Not possible
9.
The hybridisation and shape of SF6 is respectively?
sp3d2, square planar
sp3d2, octahedral
sp3d see-saw
sp3d, trigonal bipyramidal
10.
Which is dibasic?
Orthophosphoric acid
Pyrophosphoric acid
Orthophosphorus acid
Hypophosphorous acid
11.
Which of the following halides of group 15 is not hydrolysed?
NF3
PF3
NI3
Both (a) and (b)
12.
Catenation property of group 15 elements, follow the order _______.
N < P < As < Sb < Bi
P >> N > As > Sb > Bi
P < N < As < Sb < Bi
N>> P > As > Sb > Bi
13.
Which of the following is correct?
H3PO3 is dibasic and reducing
H3PO3 is dibasic and non-reducing
H3PO4 is tribasic and reducing
H3PO3 is tribasic and non-reducing
14.
On oxidation with iodine, sulphite ion is transformed to _______.
S4O62-
S2O62-
SO42-
SO32-
15.
In the brown ring test, brown colour of the ring is due to _______.
a mixture of No and NO2
Nitroso ferrous sulphate
Ferrous nitrate
Ferric nitrate
1.
(a)
F2 > CI2 > Br2 > I2: Bond dissociation energy
2.
(d)
CO + CO2 + H2O
3.
(a)
HF
4.
(b)
Cu (NO3)2 and NO2
5.
(d)
\({ CaF }_{ 2 }+{ H }_{ 2 }SO_{ 4 }\longrightarrow { CaCO }_{ 4 }+2HF\)
6.
(c)
Cl2 - Colourless
7.
(d)
H2S2O6
8.
(c)
S2- In vapour phase
9.
(b)
sp3d2, octahedral
10.
(c)
Orthophosphorus acid
11.
(d)
Both (a) and (b)
12.
(b)
P >> N > As > Sb > Bi
13.
(a)
H3PO3 is dibasic and reducing
14.
(c)
SO42-
15.
(b)
Nitroso ferrous sulphate
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