According to an estimate in Delhi,the level of $........$ came down significantly between $1997$ and $2002$.

  • A
    $CO_2$
  • B
    $SO_2$
  • C
    $N_2$
  • D
    Both $A$ and $B$

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Similar Questions

Which air pollutants are removed by the scrubber technique?

Which of the following measures have been taken by the Government of India to control air pollution?

In almost all Indian metropolitan cities like Delhi,the major atmospheric pollutant$(s)$ is/are

Scrubber is used to remove gases like

$A$ - Motor vehicles equipped with catalytic converters should use unleaded petrol.
$R$ - Lead in the petrol inactivates the catalyst.

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