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Quiz 12
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Q.1
Which is not a green house gas ?
CO
2
CH
4
N
2
O
Chlorofluorocarbons
Q.2
Formation of ozone hole is maximum over
Africa
India
Antarctica
Europe
Q.3
The chief constituent of natural gas is:
Methane
Helium
Nitrogen
Propane
Q.4
Curd is sour due to presence of
Tartaric acid
Lactic acid
Acetic acid
Oxalic acid
Q.5
Drinking soda is
Alkaline
Acidic
Neutral
Oxidant
Q.6
Smoke is formed due to
Solid dispersed in gas
Solid dispresed in liquid
Gas dispresed in solid
Gas dispersed in gas
Q.7
The main constituent of natural gas is
Methane
Ethane
Butane
Propane
Q.8
Which of the following is biodegradable ?
Paper
D.D.T.
Aluminium
Plastic
Q.9
Gobar gas contains mainly :
Methane
Ethylene
Propylene
Acetylene
Q.10
Gobar gas mainly contains
Carbon dioxide
Carbon monoxide
Hydrogen sulphide
Methane
Q.11
The ‘Green House effect’ is produced due to the presence of excess amount of
Sulphur dioxide
Nitrogen dioxide
Carbon monoxide
Methane
Q.12
The greenhouse effect is caused by the higher level of which gas in the atmosphere ?
Carbon monoxide
Carbon dioxide
Nitrous oxide
Sulphur dioxide
Q.13
Which one of the following is most acidic?
Al
2
O
3
Na
2
O
MgO
CaO
Q.14
Milk tastes sour when kept in the open for sometime due to the formation of
Lactic acid
Citric acid
Acetic acid
Carbonic acid
Q.15
The acid used in lead storage cells is
Phosphoric acid
Hydrochloric acid
Nitric acid
Sulphuric acid
Q.16
The lowest layer of earth's atmosphere is
Troposphere
Stratosphere
Mesosphere
Ionosphere
Q.17
Earth’s atmosphere is an envelope of gases extending to a height of
100 km
150 km
200 km
300 km
Q.18
Ozone saves the biosphere by absorbing high energy radiations called ________ .
Infra-red (IR)
Gamma rays
Ultraviolet rays (UV)
X–rays
Q.19
Iron and manganese present as pollutants in water cannot be removed by________
Oxidation followed by settling and filtration
Chlorination
Ion exchange process
Lime soda process or manganese zeolite process
Q.20
The resources which can be used continuously, year-after-year are called
Biotic
Abiotic
Non-renewable
Renewable
Q.21
The highest volume of gases in lower atmosphere is comprised of
Hydrogen
Carbon dioxide
Oxygen
Nitrogen
Q.22
Which of the following has pH value 7?
Pure Water
H
2
SO
4
Sodium Carbonate
HCl
Q.23
Which of the following is a commercial source of energy?
Agricultural waste
Dried dung
Sun
Natural gas
Q.24
The main constituent of biogas is
Oxygen
Methane
Acetic acid
Methyl alcohol
Q.25
An example of replenishable energy source is–
Coal
Petroleum
Lignite
Biomass
Q.26
The atmospheric gas that is mainly responsible for green house effect :
Ozone
Nitrogen
Oxygen
Carbon dioxide
Q.27
________ is used for making vinegar.
Tartaric acid
Malic acid
Oxalic acid
Acetic acid
Q.28
Milk tastes sour when it is left in open for some time. This happens due to the formation of
Lactic acid
Citric acid
Acetic acid
Carbonic acid
Q.29
Which one of the following is not a cause for present global warming and climate change ?
CFC emission
Carbon dioxide emission
Deforestation
Methane emission
Q.30
Sour taste of ‘Coca Cola’ is due to the presence of
Acetic acid
Phosphoric acid
Hydrochloric acid
Formic acid
Q.31
Where does the oxygen that keeps us alive come from?
Carbon dioxide
Carbonates absorbed from soil
Oxides of minerals
Water
Q.32
Which of the following chemicals is responsible for depletion of ozone layer in the atmosphere?
Chlorofluorocarbons
Nitrous oxide
Sulphur dioxide
Carbon dioxide
Q.33
Maximum permissible concentration of copper in drinking water in mg/L is
0.01
0.05
1.0
2.0
Q.34
Table salt gets moist during rainy season because
Sodium chloride is hygroscopic
Sodium chloride is deliquescent
Sodium chloride contains some quantity of sodium iodide
Sodium chloride contains hygroscopic impurities like magnesium chloride
Q.35
What is the maximum Water Vapour content in the atmosphere?
2 to 3 per cent
3 to 4 per cent
4 to 5 per cent
5 to 6 per cent
Q.36
In sugar solution,
Sugar is solute, water is solvent
Sugar is solvent, water is solute
Both are solutes
Both are solvents
Q.37
Muscle fatigue is caused by the accumulation of :
Pyruvic acid
Lactic acid
Oxalacetic acid
Uric acid
Q.38
The water pollution in river is measured by the dissolved amount of
Chlorine
Ozone
Nitrogen
Oxygen
Q.39
Which one of the following mineral does not contain oxygen ?
Haematite
Bauxite
Cryolite
Calcite
Q.40
Which of the following is not a commercial source of energy?
Coal
Petroleum
Natural Gas
Firewood
Q.41
The compound used in prickly heat powder to prevent excessive sweating is
Boric acid
Phosphoric acid
Carbonic acid
Sulphuric acid
Q.42
An acid having basicity one is
Sodium dihydrogen phosphate
Disodium hydrogen phosphate
Sodium phosphate
Phosphoric acid
Q.43
The acid present in red ants is
Acetic acid
Butyric acid
Caproic acid
Formic acid
Q.44
In chemical terms, what are alums used for purifying water for drinking purposes ?
Hydrated chlorides
Double nitrate
Double sulphates
Nitrates of aluminium
Q.45
Brown stains in vessels and clothes indicate the presence of high quantities of ________ in water.
Magnesium
Calcium
Manganese
None of these
Q.46
The amount of chlorine available in water after disinfection is called as
Free chlorine
Residual chlorine
Free available chlorine
Combined available chlorine
Q.47
The unit to measure the flow of water is
Micro Mho
Ohm meter
Milli curie
Cusecs
Q.48
When water itself combines chemically with some element or mineral it is called
Carbonation
Desilication
Hydration
Oxidation
Q.49
The laws of electrolysis are given by
Ostwald
Faraday
Arrhenius
Lewis
Q.50
Which one of the following acids is used in battery ?
Hydrochloric acid
Hydrofluoric acid
Sulphuric acid
Sulphurous acid
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