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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641. The number of chromosomes in human body is

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A. 42
B. 44
C. 46
D. 48
✅ The correct answer is option C.
The number of chromosomes in human body is 46. In humans, each cell normally contains 23 pairs of chromosomes, for a total of 46. Twenty-two of these pairs, called autosomes, look the same in both males and females. The 23rd pair, the sex chromosomes, differ between males and females.

642. Fire temple is the place of worship of which of the following religion?

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A. Taoism
B. Shintoism
C. Judaism
D. Zoroastrianism (Parsi Religion)
✅ The correct answer is option D.
Fire temple is the place of worship of Zoroastrianism (Parsi Religion). A fire temple in Zoroastrianism is the place of worship for Zoroastrians, often called dar-e mehr (Persian) or agiyari (Gujarati). In the Zoroastrian religion, fire (see atar), together with clean water (see aban), are agents of ritual purity.

643. The playground of baseball is known as

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A. Court
B. Diamond
C. Ring
D. Pitch
✅ The correct answer is option B.
The playground of baseball is known as Diamond. A baseball field, also called a ball field or a baseball diamond, is the field upon which the game of baseball is played. The term is also used as a metonym for baseball park.

644. Yelena Isinbayeva is associated with which of the following games/sports?

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A. Tennis
B. Pole vault
C. Boxing
D. Weightlifting
✅ The correct answer is option B.
Yelena Isinbayeva is associated with Pole vault. Yelena Gadzhievna Isinbayeva (born 3 June 1982) is a Russian former pole vaulter. She is a two-time Olympic gold medalist (2004 and 2008), a three-time World Champion (2005, 2007 and 2013), the current world record holder in the event, and is widely considered the greatest female pole-vaulter of all time.

645. When there is a decrease in the concentration of oxygen in the blood, the breathing rate

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A. increases
B. decreases
C. first increases and then decreases
D. is not affected
✅ The correct answer is option A.
When there is a decrease in the concentration of oxygen in the blood, the breathing rate increases. Breathing rate and breathing volume increase, the blood pressure increases, the heart rate increases, and kidney bicarbonate production ( in order to buffer the effects of blood acidosis), occur.

647. When and where was hockey introduced for women in Olympics?

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A. 1908 at London
B. 1980 at Moscow
C. 1936 at Berlin
D. 1924 at Paris
✅ The correct answer is option B.
The first women’s Olympic field hockey competition was introduced by the IOC at Moscow in 1980 Summer Olympics. Olympic field hockey games were first played on artificial turf at the 1976 Montreal Olympic Games.

649. Vedanthangal Bird Sanctuary at Tamil Nadu has reserves of

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A. wild ass, wolf, nilgai, chinkara
B. important bird sanctuary
C. pantha, chital, sloth bear, wolf
D. elephant, deer, wild boar, crocodile, crangetic dolphin
✅ The correct answer is option B.
Vedanthangal Bird Sanctuary at Tamil Nadu has reserves of important bird sanctuary. Vedanthangal Bird Sanctuary is a 30-hectare (74-acre) protected area located in the Chengalpattu District and Madurantakam taluk of the state of Tamil Nadu, India. The sanctuary is about 75 kilometres (47 mi) from Chennai on National Highway 45 ([NH45]). Easily reachable from Madurantakam and Chengalpattu. More than 40,000 birds (including 26 rare species), from various parts of the world visit the sanctuary during the migratory season every year.