The ozone layer exists up to $20 \ km$ above the Earth. Which of the following statements is true regarding the ozone layer and ozone?
- AIt blocks ultraviolet radiation,so it is beneficial for us.
- BThe conversion of $O_3$ to $O_2$ is an endothermic process.
- COzone is a triatomic linear molecule.
- DIt blocks useful light radiation,so it is harmful.
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Similar Questions
Identify the correct statements from the following:
$I$. Photochemical smog has high concentration of oxidising agents
$II$. $NO_2$ is present in classical smog
$III$. Higher concentration of $SO_2$ in air can cause stiffness of flower buds
$IV$. pH of rain water is approximately $7.5$
$I$. Photochemical smog has high concentration of oxidising agents
$II$. $NO_2$ is present in classical smog
$III$. Higher concentration of $SO_2$ in air can cause stiffness of flower buds
$IV$. pH of rain water is approximately $7.5$
Which of the following statements is incorrect?
Match List-$I$ with List-$II$.
List-$I$ List-$II$ $A$. Sulphate $I$. Pesticide $B$. Fluoride $II$. Bending of bones $C$. Nicotine $III$. Laxative effect $D$. Sodium arsinite $IV$. Herbicide
Choose the correct answer from the options given below.
| List-$I$ | List-$II$ |
| $A$. Sulphate | $I$. Pesticide |
| $B$. Fluoride | $II$. Bending of bones |
| $C$. Nicotine | $III$. Laxative effect |
| $D$. Sodium arsinite | $IV$. Herbicide |
Choose the correct answer from the options given below.
Which of the following is the most significant air pollutant in modern times?
Easy
View SolutionMatch List-$I$ and List-$II$:
List-$I$ List-$II$ $(a)$ Carbon monoxide $(i)$ Carcinogenic $(b)$ Sulphur dioxide $(ii)$ Metabolized by pyrus plants $(c)$ Polychlorinated biphenyls $(iii)$ Haemoglobin $(d)$ Oxides of nitrogen $(iv)$ Stiffness of flower buds
Choose the correct answer from the options given below:
| List-$I$ | List-$II$ |
| $(a)$ Carbon monoxide | $(i)$ Carcinogenic |
| $(b)$ Sulphur dioxide | $(ii)$ Metabolized by pyrus plants |
| $(c)$ Polychlorinated biphenyls | $(iii)$ Haemoglobin |
| $(d)$ Oxides of nitrogen | $(iv)$ Stiffness of flower buds |
Choose the correct answer from the options given below:
DifficultJEE MAIN 2021
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