68th BPSC Prelims 2023
World Geography Previous Year Questions (PYQs)
Explore 5 solved 68th BPSC Prelims 2023 World Geography questions with detailed step-by-step bilingual solutions, option analysis, and answer keys.
The atmosphere is mainly heated by the
Detailed Explanation:
The atmosphere is primarily heated through the greenhouse effect mechanism, not direct solar radiation.
Solar radiation (short-wave) passes through the atmosphere largely unabsorbed and heats the Earth's surface.
The heated surface emits long-wave terrestrial (infrared) radiation, which is absorbed by greenhouse gases (CO₂, water vapor, methane) in the atmosphere, warming it from below.
Reflected solar radiation escapes back to space and does not contribute to atmospheric heating.
This indirect heating process explains why the troposphere is warmest near the surface and cools with altitude.
The Arctic region and the Antarctica continent are situated near
Detailed Explanation:
Arctic region is located near the North Pole at the northernmost part of Earth, while Antarctica is a continent situated near the South Pole at the southernmost part of Earth.
The Amazon Basin is located in South America near the equator, and the Sahara Desert is in North Africa, both far from the polar regions.
The southern continent broken from Pangae is called
Detailed Explanation:
Gondwanaland was the southern supercontinent that broke away from Pangaea around 200 million years ago, comprising present-day South America, Africa, Antarctica, Australia, and the Indian subcontinent.
Laurasia was the northern counterpart that included North America, Europe, and Asia, while the Pacific Ocean is a water body, not a continental mass.
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Which of the following statements is true about troposphere?
Detailed Explanation:
✅ Statement 1 – Correct: The troposphere has an average height of 13 km (varies from 8 km at poles to 18 km at equator).
❌ Statement 2 – Incorrect: The troposphere is the lowest layer of the atmosphere, not the topmost; the exosphere is the outermost layer.
❌ Statement 3 – Incorrect: Temperature in the troposphere decreases with height at a rate of approximately 6.5°C per km (normal lapse rate).
In the end of its mountainous journey at Attock, the Indus River is joined by which river from Afghanistan?
Detailed Explanation:
At Attock in Pakistan, the Indus River is joined by the Kabul River, which originates in the Hindu Kush mountains of Afghanistan.
The Helmand River flows into the Hamun Lake in Iran-Afghanistan border, the Amu Darya flows northward into the Aral Sea, and neither joins the Indus River.
68th BPSC Prelims 2023 - World Geography Chapter-wise Distribution
Climatology
2 Qs (40%)Important Geographical Features
1 Qs (20%)Geomorphology
1 Qs (20%)Continents and Regions
1 Qs (20%)68th BPSC Prelims 2023 - World Geography Questions FAQs
Q1 How many World Geography questions were asked in 68th BPSC Prelims 2023?
Q2 What is the chapter-wise question distribution for World Geography in 68th BPSC Prelims 2023?
- Climatology: 2 questions (40%)
- Important Geographical Features: 1 questions (20%)
- Geomorphology: 1 questions (20%)
- Continents and Regions: 1 questions (20%)