World Geography Mixed Practice — MCQs with Answers (Set 6)

Australia and Brazil dominate global iron ore exports, feeding China’s massive import needs; Australia is also a leading exporter of coking coal.

Classic steel belts like Germany’s Ruhr Valley, the US around Pittsburgh, and the UK’s Sheffield grew where coal and iron ore sat close together.

India ranks a distant second globally, at about 164.9 million tonnes, roughly 9% of world output.

China produced about 960.8 million tonnes of steel in 2025, roughly 52% of the world’s total output, more than the next 12 largest producers combined.

The 2013 Kedarnath disaster in Uttarakhand, triggered by intense rainfall and cloudburst-like conditions, caused catastrophic flash floods and landslides.

A cloudburst’s small size and short duration put it below the resolution of most weather radar and forecast models, especially in remote mountainous terrain with sparse monitoring stations.

Warm, moist air forced to rise sharply against steep slopes, a process called orographic lift, intensifies the storm and makes cloudbursts especially common in mountainous terrain.

Strong updrafts inside a cumulonimbus cloud hold raindrops suspended in the air; once the accumulated water grows too heavy for the updraft to support, it all releases at once.

The IMD generally defines a cloudburst as about 10 cm of rain falling in an hour, over a small area.

The Southern Ocean and strong circumpolar winds partly insulate most of Antarctica from warming, though West Antarctica and the Antarctic Peninsula are clear exceptions.

Losing an ice shelf removes a buttress holding back the land ice behind it, which then flows into the ocean faster, accelerating future sea-level rise.

It is Greenland’s land ice sheet, not the floating sea ice around it, that contributes directly to sea-level rise in the Arctic region as it melts.

Antarctica holds roughly 90% of the world’s ice; if its full land-based ice sheet melted, sea levels could rise by around 58 metres.

The Arctic is mostly sea ice floating over an ocean, while Antarctica is mostly a land-based ice sheet sitting on a continent, ringed by floating ice shelves.

The Arctic is warming roughly two to four times faster than the global average, driven largely by the region’s own ice-albedo feedback.

Permafrost holds organic carbon built up over thousands of years; as it thaws, decomposition releases this carbon as methane and CO2, adding new greenhouse gases.

Melting land ice, like glaciers and ice sheets, adds new water to the ocean and raises sea level, while melting sea ice is already floating and displacing its own weight.

As ice melts, it exposes darker ocean or land that absorbs more heat, causing further warming and further melting, a self-reinforcing cycle.

The cryosphere is all the frozen water on Earth, including ice sheets, glaciers, sea ice, permafrost, and seasonal snow cover.

A front is the boundary zone between two different air masses; cold fronts, warm fronts, and occluded fronts each produce a distinct weather pattern as one air mass displaces another.

India’s summer monsoon arrives as moist maritime tropical air from the Indian Ocean; in winter, drier continental air from the northeast takes over instead.

The lowercase letter marks moisture: c for continental (dry) or m for maritime (moist); the uppercase letter marks source latitude, like T for tropical.

A source region needs a large, flat, uniform surface and light, stable winds, so oceans and vast plains work well while broken, mountainous terrain does not.

An air mass is a large body of air with fairly uniform temperature and humidity, formed by sitting over one source region long enough to take on its characteristics.

Bombay High is an offshore field, sitting alongside India’s onshore fields in Assam and Gujarat, and has historically been India’s single largest producing oil asset.