Practice Environmental chemistry - general science mcq Online Quiz (set-1) For All Competitive Exams
Q-1) The greatest affinity for haemoglobin is shown by which of the following :
(a)
(b)
(c)
(d)
Haemoglobin has great affinity for NO.
Q-2) Which of the following is not involved in the formation of photochemical smog?
(a)
(b)
(c)
(d)
Photochemical smog does not involve SO2 .
Q-3) Which one of the following acids is used for etching glass?
(a)
(b)
(c)
(d)
Q-4) Which of the following is a measure of organic pollution of water –
(a)
(b)
(c)
(d)
Q-5) Which of the following gas causes pollution –
(a)
(b)
(c)
(d)
Q-6) What is DDT among the following ?
(a)
(b)
(c)
(d)
DDT is a non-biodegradable pollutant.
Q-7) Which of the following gases is not a green house gas?
(a)
(b)
(c)
(d)
Q-8) The filament of an electric bulb is of tungsten because –
(a)
(b)
(c)
(d)
Q-9) Photochemical smog occurs in warm, dry and sunny climate. One of the following is not amongst the components of photochemical smog, identify it.
(a)
(b)
(c)
(d)
Q-10) Which one of the following correctly defines the state of glass?
(a)
(b)
(c)
(d)
Q-11) Which of the following is a biological method of pest control in a field?
(a)
(b)
(c)
(d)
Q-12) Water is often treated with chlorine to
(a)
(b)
(c)
(d)
water is often treated with Cl2 to kill germs.
Q-13) What is the reason for white cement to be white?
(a)
(b)
(c)
(d)
Q-14) Biochemical Oxygen Demand, (BOD) is a measure of organic material present in water. BOD value less than 5 ppm indicates a water sample to be __________.
(a)
(b)
(c)
(d)
Q-15) Ozone layer in upper atmosphere (stratosphere) is destroyed by –
(a)
(b)
(c)
(d)
Q-16) The greenhouse effect is because of the
(a)
(b)
(c)
(d)
Greenhouse gases such as CO2, ozone, methane, chlorofluorocarbon compounds and water vapour from a thick cover around the earth prevent the IR rays emitted by the earth to escape.
It gradually leads to an increase in the temperature of the atmosphere.
Q-17) Match List-I with List-II :
List-I
List-II
A. Insecticides
1. Na3AsO3
B. Herbicides
2. CuSO4
C. Fungicides
3. Zn3P2
D. Rodenticides
4. BHC
Select the correct answer from the codes given below: (A) (B) (C) (D)
| List-I | List-II |
| A. Insecticides | 1. Na3AsO3 |
| B. Herbicides | 2. CuSO4 |
| C. Fungicides | 3. Zn3P2 |
| D. Rodenticides | 4. BHC |
(a)
(b)
(c)
(d)
Q-18) Identify the wrong statement in the following.
(a)
(b)
(c)
(d)
The ozone layer acts as a shield and does not allow ultraviolet radiation from the sun to reach earth. It does not prevent infra-red radiation from the sun to reach earth.
Thus option (b) is the wrong statement and so it is the correct answer.
Q-19) Identify the wrong statement in the following:
(a)
(b)
(c)
(d)
The ozone layer acts as a shield and does not allow ultraviolet radiation from the sun to reach earth.
It does not prevent infra-red radiation from the sun to reach earth, thus option (d) is the wrong statement and so it is the correct answer.
Q-20) Green chemistry means such reactions which
(a)
(b)
(c)
(d)
Green chemistry may be defined as the programme of developing new chemical products and chemical processes or making improvements in the already existing compounds and processes so as to make them less harmful to human health and the environment.
This means the same as reducing the use and production of hazardous chemicals. i.e. the correct answer is an option (a).