List of top Chemistry Questions on Environmental Chemistry

Which of the following is/are estimated by titrating polluted water with potassium dichromate solution in acidic medium?
titrating polluted water
Match the pollutant in List I with its maximum permissible limit in drinking water given in List II.

maximum permissible limit in drinking water

Two statements are given below: I. In dry cleaning, the solvent Cl2CCl_2C = CCl2CCl_2 was earlier used and now it is replaced by liquefied CO2CO_2.
II. In bleaching of paper, H2O2H_2O_2 was used earlier and now it is replaced by chlorine gas.
Arrange the following pesticides in the chronological order of their release into the market: A: Organophosphates
B: Organochlorides
C: Sodium chlorate
Which of the following is a lung irritant?
Intermolecular forces in nylon-6, 6 are:
Which of the following compounds does not show Lassaigne’s test for nitrogen? (A) Urea
(B) Hydrazine
(C) Phenylhydrazine
(D) Azobenzene
Identify the incorrect statement from the following:
Identify the incorrect pair from the following:
Given below are two statements:
Statement I: If BOD value is 4 ppm and dissolved oxygen is 8 ppm, it is a good quality water.
Statement II: If the concentration of zinc and nitrate is 5 ppm, then it can be used as good quality water.
Which of the following free radicals helps in depletion of the ozone layer?
The concentration of dissolved Oxygen in water for growth of fish should be more than 𝑋 ppm and Biochemical Oxygen Demand in clean water should be less than 𝑌 ppm. X and Y in ppm are, respectively.
In which of the following cities photochemical smog is minimum?
Consider the following:
  1. D.D.T.
  2. Aldrin
  3. Sodium arsenite
  4. Sodium chlorate
How many of these are pesticides?

Photochemical smog found mainly in 

Formation of photochemical smog involves the following reaction in which A,BA , B and CC are respectively i NO2→hνA+BNO _2 \xrightarrow{ h\nu } A + B ii B+O2→CB + O _2 \rightarrow C iii A+C→NO2+O2A + C \rightarrow NO _2+ O _2 Choose the correct answer from the options given below:
Which of these reactions is not a part of breakdown of ozone in stratosphere?
Match the following List-I and List-II:
List-IIndustryList-IIWaste Generated
(A)Steel Plants(I)Gypsum
(B)Thermal Power Plants(II)Fly ash
(C)Fertilizer industries(III)Slag
(D)Ppaer mills(IV)Bio-degradable Wastes
Choose the correct answer from the options given below:
Correct statement about smog is

Given below are two statements: 
Statement I: The nutrient deficient water bodies lead to eutrophication.
Statement II: Eutrophication leads to decrease in the level of oxygen in the water bodies.
In the ligth of the above statements , choose the correct answer from the options given below: 

Which one of the following gases converts haemoglobin into carboxy haemoglobin ?

Earth’s atmosphere is richest in

Photochemical smog pollutants cannot be reduced by?
What causes poisoning of Carbon Monoxide?
Match List I with List II.
List I
Pollutant		List II
Source
A. MicroorganismsI. Strip mining
B. Plant nutrientsII. Domestic sewage
C. Toxic heavy metalsIII. Chemical fertilizer
D. SedimentIV. Chemical factory

Choose the correct answer from the options given below: