1. A
polymer which is used for making ropes and carpet fibres is
(a)
Polyacetylene
(b)
Polypropylene
(c)
Polyacrylonitrile
(d)
PVC
2.
What is the main constituent of natural gas?
(a)
Methane
(b)
Ethane
(c)
Butane
(d)
Hydrogen
3.
The gas used in a refrigerator is
(a)
Cooled down on flowing
(b)
Heated up on flowing
(c)
Cooled down when compressed
(d)
Cooled down when expanded
4.
Sodium stearate is a salt and used
(A)
In gun powder
(B)
In paint
(C)
To make soap
(D)
To make fertilizer
5.
Consider the following statements regarding permanent hardness of water is due
to the presence of soluble
1.
Chloride of calcium
2.
Bicarbonate of calcium
3.
Sulphate of magnesium
4.
Bicarbonate of magnesium
Which of the statements given above is/ are
correct?
(a)
Only 1
(b)
1 and 3
(c)
2 and 4
(d)
All of these
6. Soda water contains
(a)
Nitrous acid
(b)
Carbonic acid
(c)
Carbon dioxide
(d)
Sulphuric acid
7.
Match the following:
List I List II
(Element) (Nature of Element)
A.
Sodium 1. Gas
B.
Phosphorus 2. Halogens
C.
Iodine 3. Alkali metal
D.
Radon 4. Transition metal
5. Non-metal
Codes
A B
C D
(a)
2 5
3 1
(b)
3 5
2 1
(c)
4 2
3 5
(d)
5 3
4 2
8.
Which one of the following is used in welding industry?
(a)
Methane
(b)
Ethane
(c)
Acetylene
(d)
Benzene
9. Iron nails are dipped into blue copper sulphate solution. After
sometime iron nails are
(a)
Dissolved and blue colour is discharged
(b)
Dissolved but blue colour is not discharged
(c)
Not dissolved and blue colour is to discharged
(d)
Not dissolved but blue colour is discharged
10.
Non-stick cooking utensils are coated with
(a)
Black paint
(b)
PVC
(c)
Teflon
(d)
Polystyrene
Answer:
1.
B
2.
A
3.
D
4.
C
5.
B
6.
C
7.
B
8.
C
9.
D
10.
C
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