Question 11 MarkThe Montreal Protocol is associated with the control of emission of ozone-depleting substances.AnswerTrue.View full question & answer→
Question 21 MarkThere is a substantial fall in $NO_2$ and $CO_2$ levels in the air in Delhi between $1997$ and $2005$.AnswerFalse.View full question & answer→
Question 31 MarkDobson units are used to measure oxygen content in waterbodies.AnswerFalse.View full question & answer→
Question 41 MarkCNG can be easily siphoned off compared to petrol or diesel.AnswerFalse.View full question & answer→
Question 51 MarkA brief exposure to high level sound, 150dB or more can damage the ear drum.AnswerTrue.View full question & answer→