CHAPTER # 4 Group V and VI Elements MCQs
1. Out
of all the elements of group VA the highest
ionization
energy is possessed.
(A)
N
(B) P
(C)
Sb (D)
Bi
2.
In group VA elements the
most electronegative
elements is.
(A)
Sb
(B) N
(C)
P
(D) As
3. Oxidation
of NO in air produced.
(A)
NO2 (B) N2O3
(C)
N2O4
(D) N2O5
4. The
brown gas is formed when metal reduces
HNO3
(A)
N2O5
(B) N2O
(C)
NO2 (D) NO
5. Laughing
gas is chemically
(A)
NO (B) N2O
(C)
NO2 (D) N2O4
6.
Out of all the elements of
group IVA the highest melting and
boiling point is shown by the elements;
(A)
Te (B)
Se
(C)
S (D)
Pb
7. SO3
is not absorbed in water directly to form
H2SO4
because.
\
(A)
The reaction does not go to
completion
(B)
The reaction is quite slow
(C)
The reaction is exothermic
(D)
SO3 is insoluble
in water
8. Which
catalyst is used in contact process?
(A)
Fe2O3 (B) V2O5
(C)
SO3
(D) Ag2O
9. Which
of the following specie has the maximum number of unpaired electrons.
(A)
O2
(B) O2+
(C)
O2- (D) O2-2
10. Nitrogen
and phosphorus of group VA show the typical properties of
(A)
Metals (B)
Non-Metals
(C)
Both of the above (D) None of the
above
11. Arsenic
and antimony are
(A)
Metals (B)
Non-Metal
(C)
Metalloids (D) None of
the above
12. The
common valencies of the group VA
elements
are
(A)
Two to three (B) Three
and five
(C)
One and five (D) Two
and four
13. Nitrogen
is present in free state in air as a major constituent about.
(A)
58% (B)
38%
(C)
70% (D)
78%
14. Common
oxides of nitrogen are
(A)
N2O, NO and NO2
(B)
NO, NO2
(C)
N2O, NO2
(D)
N2O, NO, NO2,
N2O3 & N2O5
15. Di-Nitrogen
oxide is a colourless gas.
(A) With a faint pleasant smell and a sweetish
taste.
(B) With unpleasant smell and
bitter taste. (C) With pleasant smell and bitter taste.
(D)
With unpleasant smell and sweetish
16. Nitric acid is used for.
(A)
Making varnishes and
Organic dyes
(B)
For making organic dyes
(C)
Making varnishes
(D)
For making varnishes,
organic dyes,
explosives nitrogen fertilizers etc.
17.
Allotropes of phosphorus are of
(A)
Three types (B) Four types
(C)
Two types (D) Six
different types
18. In combined state nitrogen is found in all
living matter including.
(A)
Animals and plants as
proteins urea and
amino acids.
(B)
In plants only
(C)
In animals only
(D)
None of the above
19. All
the elements of grown VIA are non-metals
except.
(A)
S (sulphur) (B) O
(oxygen )
(C)
PO (pollinium ) (D) Te
(tellurium)
20. In
group VIA the radioactive metal is
(A)
Te (tellurium) (B) O (oxygen)
(C)
N (nitrogen) (D) None of the
above
21. Oxygen
has allotropic forms such as.
(A)
Three (B)
Four
(C)
Two (D) Five
22.
Oxygen is comprising about .
(A)
30% of earth's crust
(B)
20% of earth's crust
(C)
10% of earth's crust
(D)
50% of earth's crust
23. In
the atmosphere the free oxygen occurs about
(A)
1/3 of the atmospheric air
(B)
1/2 of the atmospheric
air
(C)
1/4 of the atmospheric air
(D)
2/3 of the atmospheric air
24. Water
contains nearly combined form of oxygen
(A) 50% (B) 70%
(C)
30% (D) 89%
25. Sulphur
exist as
(A)
Free and combined state
(B)
Only in free state
(C)
Combined state
(D)
None of the above
26. Which of
the following possesses melting point
below 0˚C?
a)
Nitrogen b)
Phosphorus
c)
Carbon d)
Bismuth
27. Formation of H2SO4 by
Contact process is an example of ________
a)
Homogenous equilibrium
b)
Heterogenous equilibrium
c)
Sulphonation
d)
Dilution
28.
Which of the following does
not contain phosphorus?
a) Yolk of egg b) Bone
c)
Nerves d)
Steel
29.
Which of the following
elements can follow extended octet rule?
a) P b)
C
c)
B d)
N
30.
The composition of brown
ring in nitrate test is
________
a) FeSO4.NO b)
FeSO4.NO2
c)
FeSO4.NO3 d)
None of above
31.
Which one of the following
compounds smells like garlic?
a) P2O3 b) P2O5
c)
H3PO3 d) All have same
smell
32.
All the elements in group
VIA are______________
a) Hygroscopic b) Metals
c)
Polymeric d)
All of above
33.
Phosphoric acid is a weak
acid and its basicity
is_______
a) 1 b)
3
c)
Zero d)
1 & 3
34.
The nitrogen gas present in
air is
a) More b)
Less reactive
b) Non reactive d)
Moderatory reactive
35.
The properties of Nitrogen
is different from other members of its group to
a) Small atomic size and high E.N
b) Single screening shell
c) Absence of d – orbital in the valence shell
d) All of these
36.
Nitrogen can not as a
central metal atom in a complex because it can not
a) Devote electrons b)
Accepts electrons
c)
Form an ion d) All of these
37.
Which oxides of nitrogen
exist in solid state?
a) N2O b) NO
c) NO2 d)
N2O5
38.
The test which is used to
confirm the presence of nitrate is
a) Silver minor test b) Ring
test
c)
Tollen’s test d) Baeyer’s test
39.
Nitric oxide has
a) Unpaired electrons
b) Odd number of electrons
c) Paramagnetic
d) All of these
40.
Mixture of HNO3
and NO2 is called
a) con HNO3 b)
dil HNO3
c)
fuming HNO3 d) HNO3
41.
Which one PX5 is
unknown?
a) PCl5 b)
PBr5
c) PF5
d)
Pl5
42.
Orthophosphorous acid is
a
a) Monobasic acid b) Dibasic
acid
c)
Tribasic acid d) Base
43.
Galena is an ore of
a) S b)
Te
c) Po
d)
Mg
44.
White phosphorous occurs in
the form of
a) Monoatomic molecule
b) Diatomic molecules
c) Triatomic molecules
d) Tetra atomic molecules
45.
The acid which has garlic
like smell and is crystalline deliquescent is
a) H2SO4 b)
HCl
b) H3BO3 d)
HNO3
46.
The acid which forms three
series of salt is
a) H2SO4 b)
H3BO3
c) H3PO4
d)
HNO3
47.
Removal of arsenic oxide is
very essential because it acts as a
a) Catalyst b)
Activator
c)
Catalytic poison d) Co-enzyme
48.
The structure of H2SO4
is
a) Trigonal b)
Octahedral
c)
Tetrahedral d) Hexagonal
49.
Which pair does not produce
H2 gas?
a) Cu and Con HNO3
b) C2H5OH and Na metal
c) Mg and steam
d) Phenol and sodium metal
50.
Why it is difficult to form
nitrogen compounds from gaseous nitrogen
a) All its reactions are endothermic
b) The bond dissociation
c) It contain triple bond
d) Its first ionization energy is very high
51.
The elements which is
essential in nitrogen fixation is
a) Zn b)
Mo
c) Fe
d)
S
52.
Which one act as a free
radical?
a) CO2 b)
CH4
c)
NO d)
BF3
53.
The starting material in
Birkland and Eyde process for manufacturing of HNO3 is
a) NH3 b)
NO2
c)
Air d)
NaNO3
54.
In making safety matches we
use
a) White phosphorus
b) Gray phosphorus
c) Violet phosphorus
d) Red phosphorus
55.
Which is most stable
isotope of sulphur?
a) Plastic sulphur b)
Monoclinic sulphur
c)
Rhombic sulphur d) Colloidal sulphur
56.
Consider
NH4NO3 gentleheating Product
The
product formed is
a) N2O b) N2
c)
NO d)
N2O3
57.
The product formed by
heating mixture of NO and NO2 are
a) N2O5 b) N2O4
c) N2O d)
N2O3
58.
Nitric oxide is prepared by
the action of HNO3
on
a) Fe b)
Cu
c)
Zn d)
Sn
59.
On industrial scale Nitric
acid is prepared by
_______
a) Dutch Process
b) Birkland-Eyde’s Process
c) Solvay’s Process
d) Down’s Process
60.
In Ostwald’s Process the
substance used to oxide ammonia is ______
a) Zn b) Pt
c)
CO d)
None of these
61.
Copper reacts with dilute
nitric acid to form
a) Nitric oxide b) Nitrogen peroxide
c)
Nitrous Oxide d) None of these
62.
By _______ process the H2SO4
produced is pure and can be produced of any desired strength.
a) Lead Chamber Process
b) Contact Process
c) Down’s Cell
d) None of these
63.
Concentrated sulphuric acid
acts as a ______
a) Reducing agent b)
Oxidizing agent
c)
Dehydrating agent d) None of these
64.
In group VI A highest
electronegativity is for
a) S b)
O
c)
Pb d)
Se
65.
Rhombic sulphur consists of
_______
a) S8 chain b)
S2 chains
c)
S4 rings d)
S8 rings
66.
The number of hydroxyl
group in
phrophosphoric
acid is
a) 3 b)
4
c)
5 d)
7
67.
When liquid sulphur at one
atmospheric pressre is very slowly
cooled, unless super
cooling
occurs, the first solid to appear is
_______
a) Monoclinic sulphur b)
Rhombic sulphur
c)
Hexagonal sulphur d) Metallic sulphur
68.
_______ is obtained when
ammonium dichromate is refrigerant?
a) Nitrogen b) Oxygen
c)
Ammonia d)
None
69.
Which compound acts as an
oxidizing as well as a reducing agent?
a) SO2 b) MnO2
c)
Al2O3 d)
CrO3
70.
Which of the following
acids does not involve
S
– S bond?
a) Phyrosulphrous acid
b) Dichotomous acid
c) Dichotic acid
d) Pyrosulphuric acid
71.
Oleum is formed by
combining H2SO4 with
a) SO2 b) SO3
c)
S d)
H2S
72.
When SO2 is
passed through an acidified
KMnO4
solution
a) KMnO4 is oxidized
b) KMnO4 is reduced
c) SO2 is reduced
d) KMnO4 solution turns green
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