Q.1
Which is not a green house gas ?
Q.2
Formation of ozone hole is maximum over
Q.3
The chief constituent of natural gas is:
Q.4
Curd is sour due to presence of
Q.5
Drinking soda is
Q.6
Smoke is formed due to
Q.7
The main constituent of natural gas is
Q.8
Which of the following is biodegradable ?
Q.9
Gobar gas contains mainly :
Q.10
Gobar gas mainly contains
Q.11
The ‘Green House effect’ is produced due to the presence of excess amount of
Q.12
The greenhouse effect is caused by the higher level of which gas in the atmosphere ?
Q.13
Which one of the following is most acidic?
Q.14
Milk tastes sour when kept in the open for sometime due to the formation of
Q.15
The acid used in lead storage cells is
Q.16
The lowest layer of earth's atmosphere is
Q.17
Earth’s atmosphere is an envelope of gases extending to a height of
Q.18
Ozone saves the biosphere by absorbing high energy radiations called ________ .
Q.19
Iron and manganese present as pollutants in water cannot be removed by________
Q.20
The resources which can be used continuously, year-after-year are called
Q.21
The highest volume of gases in lower atmosphere is comprised of
Q.22
Which of the following has pH value 7?
Q.23
Which of the following is a commercial source of energy?
Q.24
The main constituent of biogas is
Q.25
An example of replenishable energy source is–
Q.26
The atmospheric gas that is mainly responsible for green house effect :
Q.27
________ is used for making vinegar.
Q.28
Milk tastes sour when it is left in open for some time. This happens due to the formation of
Q.29
Which one of the following is not a cause for present global warming and climate change ?
Q.30
Sour taste of ‘Coca Cola’ is due to the presence of
Q.31
Where does the oxygen that keeps us alive come from?
Q.32
Which of the following chemicals is responsible for depletion of ozone layer in the atmosphere?
Q.33
Maximum permissible concentration of copper in drinking water in mg/L is
Q.34
Table salt gets moist during rainy season because
Q.35
What is the maximum Water Vapour content in the atmosphere?
Q.36
In sugar solution,
Q.37
Muscle fatigue is caused by the accumulation of :
Q.38
The water pollution in river is measured by the dissolved amount of
Q.39
Which one of the following mineral does not contain oxygen ?
Q.40
Which of the following is not a commercial source of energy?
Q.41
The compound used in prickly heat powder to prevent excessive sweating is
Q.42
An acid having basicity one is
Q.43
The acid present in red ants is
Q.44
In chemical terms, what are alums used for purifying water for drinking purposes ?
Q.45
Brown stains in vessels and clothes indicate the presence of high quantities of ________ in water.
Q.46
The amount of chlorine available in water after disinfection is called as
Q.47
The unit to measure the flow of water is
Q.48
When water itself combines chemically with some element or mineral it is called
Q.49
The laws of electrolysis are given by
Q.50
Which one of the following acids is used in battery ?
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