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Title: Non-metals Objective type Questions and Answers
Description: Elements are divided into two main classes: Metals and non-metals. This division is based upon differences in the characteristic properties of the two types of elements. Metals, in general, are solids (except mercury which is a liquid) having a bright appearance (metallic lustre) and are good conductors of heat and electricity. They are malleable (i.e. they can be flattened into thin sheets by hammering) and ductile (i.e. they can be drawn out into wire by stretching). On the other hand, some non-metals are gases, while others are solids (except bromine which is a liquid) which do not posses metallic lustre (except iodine). They are not malleable or ductile.
Description: Elements are divided into two main classes: Metals and non-metals. This division is based upon differences in the characteristic properties of the two types of elements. Metals, in general, are solids (except mercury which is a liquid) having a bright appearance (metallic lustre) and are good conductors of heat and electricity. They are malleable (i.e. they can be flattened into thin sheets by hammering) and ductile (i.e. they can be drawn out into wire by stretching). On the other hand, some non-metals are gases, while others are solids (except bromine which is a liquid) which do not posses metallic lustre (except iodine). They are not malleable or ductile.
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Chemistry
Non-metals
1
...
(b)
(d)
hydrogen
...
(b)
(d)
C
F
C + O2
(a)
(c)
6
...
Br
...
S
...
sulphur
...
11, 1 and 10
11, 2 and 10
The non metal which is placed on the left side of the periodic table is _______
(a)
(c)
4
...
10, 1 and 11
...
(b)
(d)
A
H2O
CO and H2CO3
CO and CO2
A + O2
(a) S and SO2
(c) C and CO2
B
B
...
A and B are __________
(b)
(d)
S and SO3
S and H2S
7
...
nitric acid _____________
1
...
3
...
Sulphur is oxidised to sulphuric acid
...
Which of the above statements is / are correct?
(a)
(c)
8
...
silicondioxide
silicon carbide
(b)
(d)
silicon tetrachloride
sodium silicate
F
SiF4
(b)
(d)
Si
none
The element above silicon in group IV of the periodic table is ___________
(a)
(c)
12
...
C
S
Silica is _________________
(a)
(c)
10
...
1
3
B
...
(b)
(d)
N
...
(b)
(d)
2
...
The valency of silicon is _____________
(a)
(c)
1
...
13
...
moderates active
none
ferro silicon
...
(b)
(d)
silico bronze
...
(R SiO)n
(R2 SiO2)n
(b)
(d)
(R2 SiO)n
(R SiO2)n
Silicon
Silicones
(b)
(d)
Silica
Quartz
Microprocessors are made from _____________
(a)
(c)
19
...
inert
very active
Silicone polymers have the general formula _______________
(a)
(c)
17
...
(b)
(d)
At room temperature, silicon is _____________
(a)
(c)
15
...
The position of phosphorus in the periodic table is _______________
(a)
(c)
21
...
phosphorus
potassium
(b)
(d)
sulphur
sodium
Which of the properties of the allotropes of phosphorus are wrongly matched?
S
...
odour
Odourless
garlic odour
2
...
Physiological action
very poisonous
non-poisonous
4
...
period = 3; group 3
period = 5; group 5
Rock phosphate mainly consists of ______________
(a)
(c)
23
...
period = 3; group 5
period = 5; group 3
1 and 2
2 and 4
(b)
(d)
1 and 3
3 and 4
Phosphine is produced when ______________
(a)
(b)
(c)
(d)
White phosphorus reacts with hot NaOH
Red phosphorus combine with oxygen
Phosphorus pentoxide dissolves in hot NaOH
...
26
...
(b)
(d)
monoclinic sulphur
prismatic sulphur
S
S4
(b)
(d)
S2
S8
2
...
(b)
(d)
4
...
The structure of sulphur molecule is ______________
(a)
(c)
32
...
Rhombic sulphur and plastic sulphur
Amorphous sulphur and prismatic sulphur
Rhombic sulphur and monoclinic sulphur
Plastic and monoclinic sulphur
The molecular formula of sulphur is_____________
(a)
(c)
30
...
(b)
(d)
The crystalline allotropes of sulphur are __________
(a)
(b)
(c)
(d)
28
...
Hot concentrated sulphuric acid ___________
(a)
(b)
(c)
(d)
34
...
vulcanisation of rubber
all
...
(a)
(c)
38
...
(a)
(c)
37
...
(a)
(c)
36
...
(a)
(c)
Ferro – silicon
Silicon carbide
(b)
(d)
Silico - bronze
Silicon chips
39
...
(b)
(d)
electro – refining
electro thermal
in free state
as phosphoric acid
(b)
(d)
as phosphates
as phosphorus pentoxide
...
bessemer’s
frasch
The ore used in the extraction of phosphorus by modern electro thermal
process is __________
(a)
(c)
43
...
(b)
(d)
Sulphur is extracted from the earth crust by the __________ process
...
blue glass
watch–glass
H2SO4
H2CO3
(b)
(d)
CO3
HCOOH
An allotrope of phosphorus, which does not exhibit phosphorescence, is ______
(a)
(c)
red phosphorus
both
(b)
(d)
white phosphorus
none
Title: Non-metals Objective type Questions and Answers
Description: Elements are divided into two main classes: Metals and non-metals. This division is based upon differences in the characteristic properties of the two types of elements. Metals, in general, are solids (except mercury which is a liquid) having a bright appearance (metallic lustre) and are good conductors of heat and electricity. They are malleable (i.e. they can be flattened into thin sheets by hammering) and ductile (i.e. they can be drawn out into wire by stretching). On the other hand, some non-metals are gases, while others are solids (except bromine which is a liquid) which do not posses metallic lustre (except iodine). They are not malleable or ductile.
Description: Elements are divided into two main classes: Metals and non-metals. This division is based upon differences in the characteristic properties of the two types of elements. Metals, in general, are solids (except mercury which is a liquid) having a bright appearance (metallic lustre) and are good conductors of heat and electricity. They are malleable (i.e. they can be flattened into thin sheets by hammering) and ductile (i.e. they can be drawn out into wire by stretching). On the other hand, some non-metals are gases, while others are solids (except bromine which is a liquid) which do not posses metallic lustre (except iodine). They are not malleable or ductile.