Question

The true statement about ‘green-house effect’ is that it is

(a) caused by combination of many gases

(b) caused only by CO₂

(c) caused by CO₂, CFC, CH₄ and NO₂ gases

(d) none of these.

Answer 1

(c) caused by CO2, CFC, CH4 and NO2 gases

Green house effect is warming impact determined in inexperienced house by way of allowing solar radiations to bypass in however preventing lengthy range warmness radiations to bypass out. The gases which might be transparent to sun radiation however hold and in part mirror again long wave heat radiations are called green house gases.

These days the attention of inexperienced residence gases has began rising ensuing in superior inexperienced house impact this is as a consequence increasing the suggest worldwide temperature. it's far known as international warming. The numerous greenhouse gases are C02 (warming 60%), CH4 (effect 20%), chloroflourocarbons or CFCs (1.four%) and nitrous oxide (N20, 6%). Others of teen importance are water vapours and ozone.