Which of the following is a chlorinated hydrocarbon?

Which steps were taken in Delhi to reduce pollution from vehicles?
$I-$ Phasing out of old vehicles
$II -$ Use of leaded petrol
$III -$ Use of low-sulphur petrol and diesel
$IV -$ Use of catalytic converters in vehicles
$V -$ Application of stringent pollution level norms for vehicles

The Bhopal gas tragedy in $1984$ was caused by the leakage of which gas?

What does snow-blindness refer to?

Which of the following animals remained free from Minamata disease in Minamata Bay,Japan?

The expanded form of $BOD$ is: