Climate Change and Pakistan MCQs with Explanations

The atmosphere is largely transparent to short-wave solar radiation but absorbs terrestrial long-wave infrared in specific bands, re-emitting part of it downward. Blocking ultraviolet is the function of stratospheric ozone, not of greenhouse gases — the trap in option 2.

Carbon dioxide from fossil-fuel combustion, cement making and land-use change contributes roughly three-quarters of anthropogenic greenhouse emissions, well ahead of methane. Water vapour is the most abundant greenhouse gas overall but is not counted in inventories because its concentration responds to temperature rather than to emissions.

Methane is the second-ranked anthropogenic greenhouse gas and is notable for agriculture, wetlands, fossil-fuel extraction and waste. Nitrous oxide is third and comes mainly from fertiliser use in soils, which makes it the close distractor here.

The UNFCCC was opened for signature at the United Nations Conference on Environment and Development in Rio de Janeiro in June 1992 and entered into force in 1994. 1987 is the Montreal Protocol year and 1997 the Kyoto year, so both are deliberate chain-shift traps.

The Kyoto Protocol was adopted in December 1997 at COP3; its first commitment period ran from 2008 to 2012. Option 2005 is the entry-into-force year and is the standard trap, while option 2012 relates to the end of the first period and the Doha amendment.

Article 2 of the Paris Agreement sets the well-below-2-degrees goal with the 1.5-degree aspiration, now central to the argument of low-lying and glacier-dependent countries such as Pakistan. The two-degree figure is already in the stem, so the aspiration value is what is being tested.

The Glasgow Climate Pact of November 2021 was the first UNFCCC decision to mention coal explicitly, calling for a phase-down of unabated coal power. Last-minute objection to stronger wording means the phrase is 'phase down', not 'phase out' — a distinction papers exploit.

COP27 in Egypt in November 2022 agreed to create a new loss-and-damage financing facility, a demand pressed hard by Pakistan after its 2022 floods. Glasgow (option 3) had begun the debate but stopped short of agreeing the fund.

The Post-Disaster Needs Assessment recorded about 33 million people affected, more than 1,700 deaths and some eight million displaced, with total damages and losses estimated near 30 billion dollars. The peak of the Indus and its tributaries ran far above flood stage from July to September 2022.

The indicator sets stress below 1,700 cubic metres per capita annually, scarcity below 1,000 and absolute scarcity below 500. Option 2 is therefore the absolute-scarcity line, not the stress line — the exact substitution this question tests.

Surges and regionally increased snowfall have kept several Karakoram glaciers stable or advancing through a period of general global ice loss. This does not mean glacier-dependent regions are safe: the Indus system still loses long-term ice storage as temperatures rise.

Sindh and Balochistan combine the highest solar irradiation in the country with vast unused land, so utility-scale solar belongs to the south and west. Hydropower potential lies on the Indus and its northern tributaries in Khyber Pakhtunkhwa and Gilgit-Baltistan, while the developed wind sites are the Jhimpir belt of Sindh and the Balochistan coast near Gwadar.