General Knowledge

Boost your exam preparation with the latest General Knowledge MCQs with answers and explanations. Our collection covers current affairs, world geography, history, Pakistan studies, sports, science, technology, and important international organizations. These General Knowledge multiple-choice questions are designed for students, job seekers, and competitive exam aspirants preparing for NTS, PPSC, FPSC, CSS, PMS, university entry tests, and recruitment exams. Practice online with updated General Knowledge MCQs to improve awareness, sharpen memory, and score higher in tests and interviews.

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1541. Lead poisoning

by
A. reduces O2 carrying capacity of hemoglobin in blood
B. increases O2 carrying capacity of hemoglobin in blood
C. reduces O2 carrying capacity of myoglobin in muscles
D. increases O2 carrying capacity of myoglobin in muscles
✅ The correct answer is option A.
Lead poisoning reduces O2 carrying capacity of hemoglobin in blood.

1545. A population is a group of

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A. individuals in a species
B. species in a community
C. communities in an ecosystem
D. individuals in a family
✅ The correct answer is option A.
A population is defined as a group of individuals in a species. Hence they can interbreed and include organisms in a geographical area. The total of all populations is called a universe.

1546. Atmospheric humidity is measured by

by
A. Auxanometer
B. Photometer
C. Hygrometer
D. none
✅ The correct answer is option C.
Humidity is the measure of the amount of moisture in the air. A psychrometer is an example of a hygrometer. A psychrometer uses two thermometers to measure relative humidity; one measures the dry-bulb temperature and the other measures the wet-bulb temperature.

1547. When a liquid thermometer is held in direct sunlight,

by
A. It will accurately measure the air temperature
B. It will measure a much higher temperature than that of the air
C. It will measure a much lower temperature than that of the air
D. It will measure the temperature of the sun rather than the air
✅ The correct answer is option B.
When a liquid thermometer is held in direct sunlight, it will measure a much higher temperature than that of the air.

1548. On the average, about what percentage of the solar energy that strikes the outer atmosphere eventually reaches the earth’s surface?

by
A. 5%
B. 15%
C. 30%
D. 50%
✅ The correct answer is option D.
About 23 percent of incoming solar energy is absorbed in the atmosphere by water vapour, dust, and ozone, and 48 percent passes through the atmosphere and is absorbed by the surface. Thus, about 71 percent of the total incoming solar energy is absorbed by the Earth system.

1549. Which statement(s) below is/are correct?

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A. Valleys are more susceptible to radiation fog than hill tops
B. Without the summer fog along the coast of California, redwoods would not grow well there
C. Fog can be composed of ice crystals
D. All of the above are correct
✅ The correct answer is option D.
All of the above are correct.

1550. Rainfall is measured by an instrument known as

by
A. Seismograph
B. Lactometer
C. Rain gauge
D. Nanometer
✅ The correct answer is option C.
A rain gauge (also known as an udometer, pluviometer, or an ombrometer) is an instrument used by meteorologists and hydrologists to gather and measure the amount of liquid precipitation over an area in a predefined period of time.