Q.1
White lung cancer is caused by
Q.2
How many neutrons does iron have?
Q.3
Of the following, which one pollutes the air of a big city ?
Q.4
Supersonic jet causes pollution by thinning of
Q.5
The pollutant responsible for ozone holes is ________
Q.6
The mass number of a nucleus is
Q.7
Which of the following metals is not a pollutant ?
Q.8
What is the chemical symbol of mercury?
Q.9
Which of the following can be found as pollutants in the drinking water in some parts of India? Select the correct answer using the code given below.
(A) Arsenic
(B) Sorbitol
(C) Fluoride
(D) Formaldehyde
(E) Uranium
Q.10
Which of the following is a natural polymer?
Q.11
Terylene is a condensation polymer of ethylene glycol and which acid?
Q.12
Which of the following is used as non-stick coating for cooking utensils?
Q.13
The main component of liquid bleach is:
Q.14
Which of the following is a man-made source of air pollution ?
Q.15
Of the following which one pollutes the air of a big city ?
Q.16
Which of the following is usually not an air-pollutant?
Q.17
Major gaseous pollutant of the thermal power station is
Q.18
Which of the following is a monoatomic gas?
Q.19
The purest form of water in nature is
Q.20
Smog is
Q.21
Plastic is a type of
Q.22
The material known in commerce as Terylene is a
Q.23
The fibre least prone to catch fire is
Q.24
Water cycle refers to
Q.25
Quartz is made of
Q.26
What is the product formed when sodium bicarbonate is heated strongly?
Q.27
Bleaching powder is used in drinking water as a/an
Q.28
Atomic number of an atom gives the number of which of the following ?
Q.29
The gas causing acid rain in an industrial area is
Q.30
In drinking water supply, which of the following treatments is not involved
Q.31
Polythene is polymer of
Q.32
Nylon is a type of
Q.33
Which of the following is used to make light weight, but strong plastic ?
Q.34
Permanent hardness of water may be removed by addition of
Q.35
Cement is formed by strongly heating a mixture of
Q.36
The process of removing calcium and magnesium from hard water is known as
Q.37
The chemical bahaviour of an atom depends upon
Q.38
The two metal ions that cause hardness to water are:
Q.39
The electronic configuration of an atom having atomic number ‘20’ is
Q.40
Glycol is used to manufacture which of the following ?
Q.41
In an oxygen molecule, two atoms are united by
Q.42
Nylon is made up of :
Q.43
Atoms of same element having different mass numbers are called________
Q.44
Atomic number is the number equal to
Q.45
Periodic table contains how many periods
Q.46
Which of the following fibres catches fire least ?
Q.47
Non-stick kitchenwares are coated with
Q.48
The increasing abundance of green house gases in atmosphere has led to the following effect except
Q.49
Acid rain is caused due to pollution of atmosphere by
Q.50
What are the components responsible for acid rain?
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