CHAPTER # 3 Group III and IV Elements MCQs
1. Which
metal is used in the thermal process because of its activity.
(A) Iron (B)
Copper
(C)
Aluminum (D)
Zinc
2. Aluminum
oxides is
(A)
Acidic oxide (B) Basic oxide
(C)
Amphoteric oxide (D) None of these
3. Chemical
composition of colemnite is.
(A)
Ca2B6O11. 5H2O (B) CaB4O7. 4H2O
(C)
Na2B4O7. 4H2O (D) CaNaB5O9. 8H2O
4. Which
element forms an ion with charge 3+.
(A)
Beryllium (B) Aluminum
(C)
Carbon (D)
Silicon
5. Which
element among the following belongs to
Group IVA of the periodic
Table.
(A)
Barium (B) Iodine
(C)
Lead (D) Oxygen
6. Boric
acid cannot be used.
(A) As antiseptic in medicine
(B) For washing eyes
(C) In soda bottles
(D) For enamels and glazes
7. Which
of the following elements is not present
abundantly in earth's
crust.
(A)
Silicon (B) Aluminum
(C)
Sodium (D) C
8. The
chief Ore of aluminum is.
(A) Na3AIF6 (B) Al2O3.
2H2O
(C)
Al2O3 (D) Al2O3.
H2O
9. The
Group IIA of the periodic table comprises
the elements.
(A) Boron, aluminum, gallium, indium and thallium.
(B) Boron gallium, thallium.
(C) Aluminum, calcium, strontium.
(D) All of the above
10. Boron
is non-metallic because of
(A) Large size and higher nuclear change
(B) Small size and higher nuclear charge
(C) Small size and smaller nuclear charge
(D) None of the above
11. The
increase in the atomic size in group is
(A)
Regular (B) Irregular
(C)
Both (D) None of
the above
12. Orthoboric
Acid is a mineral of.
(A) Aluminum (B) Silicon
(C)
Calicium (D)
Boron
13. Aluminum
is the third most abundant elements in
earth crust after.
(A)
Oxygen (B)
Silicon
(C)
None of the above (D) Both of the Both
14. Bauxite
is an ore of.
(A)
Aluminum (B) Boron
(C)
Carbono (D) Gallium
15. Which
of the elements of Group IIA are rare and only obtained as by-products.
(A) Gallium thallium
(B) Thallium indium
(C) Gallium indium
(D) Gallium thallium indium
16. Borax is the sodium salt of tetraboric acid.
It is most important of all among.
(A)
Borates (B) Carbonates
(C)
Bicarbonates (D) None of the above
17. Borax
occurs as natural deposit called tincal in
the dried up lakes of.
(A)
Tibet (B) California
(C)
Tibet & California (D)
Virginia
18. Group
IV A of the periodic table comprises
elements.
(A) Carbon silicon
(B) Tin, carbon , silicon
(C) Carbon, silicon, tin and lead
(D) None of the above
19. The
non-metals in Group IV A are.
(A) Carbon, silicon (B) Tin and Lead
(C) All of the above (D) None of the above
20. The
elements of Group IV A are character sized by a set of .
(A) Three valence shell electrons
(B) Four valence shell electrons
(C) Five valence shell electrons
(D) Two valence shell electrons
21. Group
IV A elements form.
(A)
Super oxide (B) Oxides
(C)
Dioxide (D) All of the
above
22. The
property of catenation among the carbon and silicon .
(A) Increase on moving down the group form
carbon to lead
(B) Decrease on moving down the group from
lead to carbon.
(C) Decreases on moving down the group
from carbon to lead
(D) Stable on moving down the group from
carbon to lead.
23. The
oxides of carbon are
(A) CO and CO2
(B) CO, CO2 and C3O2 carbon sub
oxide
(C) CO, CO2, C2C3
(D) None of the above
24. China
wares are made form a mixture of
(A) Kaolin and bone ash
(B) Kaolin and feldspar
(C) Kaolin feldspar and bone ash
(D) None of the above
25. Various
oxides are used as pigments in the
pigments of which element.
(A)
Oxides of lead, basic lead carbonate etc.
(B)
Various oxides of lead
(C) Various oxides of lead, basic lead
carbonate, lead chromate
(D) Oxides of aluminum
26. Boron
occurs in traces and has been found to be important for the growth of.
(A)
Plants of many kinds
(B)
Plants and animals
(C)
Animals
(D)
None of the above
27. Semiconductors
conduct electricity better than.
(A)
Conductors (B) Insulators
(C)
Both of the above (D) None of the above
28. Oxygen
is the abundant element in earth crust?
(A) Most of all
(B) 2nd in number
(C) Third most abundant
(D) 4th most abundant
29. Substance
which is found in dried up lakes of Tibet and California is______
a)
Tincal b)
Boric Acid
c)
Calcium carbonate d) All
30. Boron
is a white crystalline solid and it
is________
a)
More soluble in cold water
b)
More soluble in hot water
c)
More soluble in water
d)
Soluble only in organic
solvents
31. One
of the outstanding features of boron is ability to form________
a)
Molecular addition
compounds
b)
Molecular crystals
c)
Semiconductors
d)
All
32. Which of the following does not give
Borax bead
test?
a)
Cu b)
Cr
c)
Ni d)
Al
33. The metal which is used in thermite
process because of its activity is_______
a)
Iron b)
Copper
c)
Aluminium d)
Zinc
34. Which
of the following shows inert pair effect?
a)
Boron b)
Carbon
c)
Silicon d)
Tin
35. Tincal
is a mineral of____________
a)
Al b)
Si
c) B d)
C
36.
Because of its ability to
combine with both oxygen and nitrogen, aluminium metal is used_________
a) As nitrometer
b) To remove air bubbles from molten metal
c) To produce alloy
d) All
37.
Silicon differ from silica
by a group of _________
a) CH3 b)
–OH
c)
OCH3 d)
O2
38.
Boron in soil has been
considered essential
specially
for________
a) Soil porosity
b) Proper growth of plants
c) Alkalinity of soil
d) All
39.
Special feature of borate
glass is that it is ______
a) Heat resistant
b) Low melting
c) Used to prepare chemical garden
d) All
40.
In p – block elements, the
S – electrons of outer shell of the heavier members are failed to participate
in bonding, because they
a) Remain paired b)
Remain unpaired
c)
Are free d)
None of these
41.
The tendency of the pair of
S – electron to remain inert increase with the increase in
a) Atomic number b) Atomic
weight
c)
E.N d)
I.P
42.
Boron does not easily form
cations, because it has the tendency to form bond like non-metal
a) Ionic bond b)
Metallic bond
c)
Hydrogen bond d) Covalent bond
43.
Boron is metalloid and
semiconductor like
a) Be b)
K
c) Si
d)
Al
44.
Which element is unstable
in air and is oxidized superficially in air
a) Aluminum b)
Thallium
c)
Gallium d)
Indium
45.
Crystalline boron has
structure
a) Cubic b)
Monoclinic
c)
Hexagonal d)
Trigonal
46.
The hydrides B2H6
and Si2H6 are said to
a) Ionic hydrides b)
Complex hydrides
c)
Interstitial hydrides d) Covalent
hydrides
47.
The compound, which is used
in borax bead test for cations analysis, is
a) NaOH b)
H3BO3
c)
Na2B4O7.10H2O d) H2B4O7
48.
Orthoboric acid is weak
acid because it
a) Accepts OH-1 ion b)
Donate OH-1 ion
c)
Accept H+1 d)
Donate H+1
49.
The aqueous solution of
which acid is used for washing eyes?
a) H2B4O7 b) HCl
c) H3BO3
d)
HBO2
50.
The process in which
Bauxite is purified by dissolving it in 45% aqueous NaOH at 150oC to
separate insoluble iron oxide as red mud is called
a) Hall’s process b)
Baeyer’s process
c)
Arrhenius process d) Grignard process
51.
Bauxite is an oxide mineral
of
a) Cu b)
Ag
c) Al
d)
Zn
52.
AlCl3 and GaCl3
are covalent when anhydrous because
a) They belong to group III A
b) Their ions have small size and high charge
c) They have high I.P
d) None of these
53.
In the electrolysis of
alumina is mixed with Cryolite (Na3AlF6) and fluorspar
(CaF2) in the ratio of
20 : 60 : 20. the function of the Cryolite and fluorspar
is
a) To decrease the fusion temperature of alumina and to make good
conductor of electricity b) To dissolve alumina
c) To dissolve sodium
d) To increase the ionization of alumina
54.
Termite is a mixture
of
a) Iron oxide and aluminum
b) Iron oxide and copper
c) Copper oxide and aluminum
d) None of these
55.
In aluminum termite
process, aluminum acts as a
a) Reducing agent b)
Oxidizing agent
c) A
flux d)
None of these
56.
Which aluminium alloy is
extremely light?
a) Duralumin b)
Alnico
c)
Magnalium d)
Aluminium bronze
57.
Cupric oxide on heating
with B2O3 yields blue colored beads in the oxidizing
flame because
a) Cupric borates are white in color
b) Cupric borates are black in color
c) Cupric borates are green in color
d) Cupric borates are blue in color
58.
In mordenting aluminium
ions (Al+3) are precipitated on the cloth as
a) Al2O3 b)
AlN
c)
Al(OH)3 d)
AlCl3
59.
Platinum metal can be
dissolved in
a) Hot con HCl
b) Hot con H2SO4
c) Hot con HNO3
d) A mixture of Con. HCl and con HNO3
60.
Which of the following can
form nitride, which react with water to give ammonia?
a) Boron b)
Gallium
c)
Indium d)
Thallium
61.
The weak acid, which cannot
be titrated with standard alkies, is
a) HCl b) H2SO4
c) H3BO3
d)
All of these
62.
Carbon differs from other
members of its group due to smaller atomic size, higher
electronegativity and the absence of
a) s – electrons b) p – electrons
c) d
– electrons d) All of these
63.
Aqua regia is a mixture of
concentrated HNO3 and concentrated HCl in the ratio of
a) 3 : 1 b) 1 : 3
c) 2
: 3 d)
3 : 2
64.
In land storage batteries,
the acid used is
a) Con HCl b)
Dil HCl
c)
Con H2SO4 d)
Dil H2SO4
65.
The dry ice is a compound
of
a) Solid ice with any water
b) Solid SO2
c) Solid CO2
d) Solid C6H6
66.
In the contact process for
the manufacturing of H2SO4, the catalyst used is
a) Cu b)
Ni
c) Pt
d)
N2O5
67.
The depositing layer in tin
plating is
a) Cu b)
Sn
c) Al
d)
Ni
68.
Ortho boric acid on heating
at 100oC yields
a) Meta boric acid
b) Pyroboric acid
c) Tetra boric acid
d) Boric anhydride acid (B2O3)
69.
Which of the following is
used in photographic film?
a) MgBr2 b)
NaCl
c)
AgBr d)
Na2S2O3
70.
Aluminum does not react
with HNO3 at any concentration and therefore HNO3 is
transported in aluminum containers, this is due to formation of protective
layer of
a) Cupric oxide b) Ferric oxide
c)
Aluminum oxide d) Aluminum nitride
71.
Action of aqua regia on
noble metals is due to
a) HNO3 b)
HCl
c)
H2SO4 d)
Chlorine
72.
Phosgene is a poisonous
gas, its chemical name is
a) Carbon dioxide b)
Phosphonyl chloride
c) Carbon monoxide d) Carbonyl chloride
73.
The maximum inert pair
effect is shown by
a) B b)
Al
c) Ga
d)
Tl
74.
Quartz is the polymeric
form of
a) (SiO2)n b)
(CO2)n
c)
(CH2 – CH2)n d) None of these
75.
If a metal is protected by
an oxide layer from further attack, the metal is said to be
a) Reactive b)
Active
c)
Passive d)
Attractive
76.
Carbon reacts with metals
to form
a) Hydrides b)
Oxides
c)
Hydroxides d) Carbide
77.
The control addition of III
A and IV A members in Silicon and Germanium is known as
a) Inert pair effect b)
Doping
c)
Litharge d)
Red lead
78.
P – type of semi conductor
are formed by mixing Silicon or Germanium with members of
a) III A b) IV A
c) V
A d)
VI A
79.
Litharge is chemically
a) PbO b) PbO2
c) Pb3O4
d)
Pb(CH3COO)
80.
The Octet rule is not
followed by
a) Boron on BCl3 b)
Oxygen in H2O
c)
Nitrogen in NH3 d)
Phosphorus in PH3
81.
Which of the following
elements show oxidation state of +
3 only?
a) B b)
Ga
c)
In d)
Ti
82.
______ of the following is
not metallic in nature.
a) Boron b)
Aluminum
c)
Indium d)
Thallium
83.
The oxides of Boron are
______ in nature.
a) Acidic b)
Basic
c)
Neutral d)
None of these
84.
Orthoboric acid on heating
to about 100oC
looses
a water molecule to form ______
a) Metaboric acid
b) Pyroboric acid
c) Metaboric and pyroboric acid
d) None of these
85.
The function of Fluorspar
in the electrolytic reduction of alumina dissolved in fused
cryolite
(NA3
AlF6) is
a) As a catalyst
b) To lower the temperature of the melt and to make the fused mixture conducting.
c) To decrease the rate of oxidation of carbon at the anode.
d) None of the above
86.
Which of the following
statements is correct?
a) H3PO3 is dibasic and reducing
b) H3PO3 is tribasic and reducing
c) H3PO3 is tribasic and non – reducing
d) H3PO3 is dibasic and non – reducing
87.
Boric acid is
a) Weak monobasic Lewis acid
b) Only weak monobasic Arhenius acid
c) Only weak monobasic Bronsted acid
d) Only weak tribasic Arrhenius acid
88.
The reduction of metal
oxides is sometimes
accomplished
by using aluminum in the
______
a) Goldschmidt’s reaction
b) Silberchemdit’s reaction
c) Baeyer’s reaction
d) Zilch’s reaction
89.
Hall’s process is based on
electrolysis of
_____
a) Alumina b)
Gypsum
c)
Borax d)
None of these
90.
_______ is a better
conductor of heat.
a) Fe b)
Sn
c) Al
d)
None of these
91.
Al2O3
formation involves evolution of a larger
quantity of heat which
makes its uses in
_______
a) Deoxidizer b)
Confectionary
c)
Indoor photography d) Thermite welding
92.
In the commercial
electrochemical process fro
aluminum
extraction, the electrolyte used is
a) Al(OH)3 in NaOH solution
b) An aqueous solution of Al2(SO4)3
c) A molten mixture of Al2O3 and Na3AlF6
d) A molten mixture of AlO(OH) and Al(OH)3
93.
Borax is prepared by
treating colemanite with
a) NaNO3 b)
NaCl
c)
NaHCO3 d)
Na2CO3
94.
Elements, which exist in
two or more physical
or
molecular forms, are called _______
a) Isotopes b)
Allotropes
c)
Isobars d)
None of these
95.
PbO behaves as a/an _______
a) Amphoteric oxide b)
Basic oxide
c)
Super oxide d) Sub oxide
96.
The number and type of
bonds between two
carbon
atoms in CaC2 are
a) One sigma and one pi bond
b) One sigma and two pi bonds
c) One sigma and one and a half pi bond
d) One sigma bond
97.
Aluminum is diagonally
related to
a) Li b)
Si
c)
Be d)
B
98.
Which of the following
halides is least stable and has doubtful
existence?
a)
Cl4 b)
SnI4
c)
GeI4 d) PbI4
99.
In which of the following
phosphorus has an oxidation state of + 4?
a)
P4O6 b)
P4O8
c)
P4O9 d)
None of these
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