List of top Chemistry Questions on Environmental Chemistry

Minamata disease is caused by .......... poisoning.
The octet rule is not valid for which one of the following molecules?
Polyhalogen compounds have wide application in industries and agriculture. DDT is also a very important polyhalogen compound. It is a:
Which of the following gases is responsible for the greenhouse effect?
In the electrolysis of molten NaCl using inert electrodes, what will be observed at the electrodes?
An aqueous solution of CuSO4 is electrolyzed using platinum electrodes.
Which of the following will be observed at the cathode?
A solution is formed by mixing chloroform (CHCl3) and acetone (CH3COCH3).
Which of the following is true regarding the nature of this solution?
Which of the following has the maximum percentage of gas in the air?
What is DDT among the following :
In drinking water, if the maximum prescribed concentration of copper is x mg dm⁻³, the maximum prescribed concentration of zinc will be
Ozone layer is depleted by _______.
Which one of the following statements related to photochemical smog is not correct?
Which of the following when present in excess in drinking water causes the disease methemoglobinemia ?

Match the following:

List-I (Metal in drinking water)List-II (Maximum prescribed concentration in ppm)
A) Mn I) \( 0.05 \)
B) ZnII) \( 3.0 \)
C) CdIII) \( 0.005 \)
D) CuIV) \( 5.0 \)
Zinc sulphide reacts with oxygen and gives two oxides, X and Y. If nature of X is acidic, the nature of Y is
Consider the following:
Statement-I: \( \text{CO}_2 \) is released into atmosphere by burning of fossil fuels and increase in \( \text{CO}_2 \) levels in air causes global warming.
Statement-II: CO is released into the air mainly by automobile exhaust and it is a lung irritant.
Which of the following methods are used to remove temporary hardness of water? I) Boiling
II) Calgon method
III) Clark's method
Identify the incorrect statement from the following:
Identify the incorrect pair from the following:
Which of the following compounds does not show Lassaigne’s test for nitrogen? (A) Urea
(B) Hydrazine
(C) Phenylhydrazine
(D) Azobenzene
Intermolecular forces in nylon-6, 6 are:
Carcinogenic pollutant in the following is
1028 grams of seawater sample contains 7 mL of dissolved oxygen ($ \text{O}_2 $). What is the concentration of oxygen in parts per million (ppm)?
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