Environmental Chemistry · Chemistry · AP EAPCET
MCQ (Single Correct Answer)
Which one of the following gases is the major contributor to global warming ?
Which of the following statements is not correct?
The incorrect statement from the following is
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?
$$ \text { Match the following } $$
| List-I (Pollutant concentration limit in water) |
List-II (Effect) |
||
|---|---|---|---|
| (A) | $$ \mathrm{Pb}>50 \mathrm{ppm} $$ |
(I) | Brown mottling of teeth |
| (B) | $$ \mathrm{SO}_4^{2-}>500 \mathrm{ppm} $$ |
(II) | 'Blue baby' syndrome |
| (C) | $$ \mathrm{NO}_3^{-}>50 \mathrm{ppm} $$ |
(III) | Laxative effect |
| (D) | $$ \mathrm{F}^{-}>2 \mathrm{ppm} $$ |
(IV) | Liver damage |
Among the following compounds, which one is not responsible for the depletion of ozone layer?
$$ \text { Match the following } $$
| List-I (Metal in drinking water) |
List-II (Maximum prescribed concentration in ppm) |
||
|---|---|---|---|
| (A) | Mn | (I) | 0.05 |
| (B) | Zn | (II) | 3.0 |
| (C) | Cd | (III) | 0.005 |
| (D) | Cu | (IV) | 5.0 |
The correct answer is
Identify the air pollutant which in high concentration leads to stiffness of flower buds?
Consider the following.
Assertion (A) : CO is poisonous to living beings.
Reason (R) : CO binds to haemoglobin forming carboxyhaemoglobin, which is less stable than oxygen-haemoglobin complex.
Correct answer is
Match the pollutant is List I with its maximum permissible limit in drinking water given in List II
| List I | List II | ||
|---|---|---|---|
| A | Lead | I | 500 ppm |
| B | Sulphate | II | 50 ppm |
| C | Nitrate | III | 50 ppb |
Which of the following is/are estimated by tura polluted water with potassium dichromate solution in acidic medium?
$$ \begin{array}{c|c|c} \hline \text { COD } & \text { BOD } & \text { DO } \\ \hline \text { I } & \text { II } & \text { III } \\ \hline \end{array} $$
$$ \text { Match the following. } $$
| List-I F-ion concentration in drinking water) |
List-II (Effects on humans) |
||
|---|---|---|---|
| A | $$ \text { <1 ppm } $$ |
I | $$ \text { Harmful to bones } $$ |
| B | $$ >2 \mathrm{ppm} $$ |
II | $$ \text { Tooth decay } $$ |
| C | $$ >10 \mathrm{ppm} $$ |
III | $$ \text { Brown mottling of teeth } $$ |
Arrange the following pestidides in the chronological order of their release into the market.
Organophosphates Organochlorides Sodium chlorate
$\quad \text { (A) } \quad\quad\quad\quad\quad\quad\quad \text { (B) } \quad\quad\quad\quad \text { (C) }$
Identify the coldest region among the following layers of atmosphere.
Which among the following is not a greenhouse gas?
Which among the following has the highest concentration of PAN?
Green chemistry refers to reactions which