Everyday Science — All MCQs
2717 questions available
Q601.The good sources of Vitamin-C are ____?
Correct Answer: C
Fresh citrus fruits (oranges, lemons) and raw fresh vegetables contain the highest concentration of heat-sensitive Vitamin C.
Q602.The Kuiper belt and Oort cloud were first proposed by ____?
Correct Answer: B
Jan Oort proposed the Oort cloud in 1950, while the Kuiper belt was modeled independently by astronomers including Gerard Kuiper.
Q603.The largest latitude circle on earth is ____?
Correct Answer: D
The Equator represents the great circle of Earth's latitude (0°), where the planet's circumference is maximum.
Q604.The largest part of the human brain is ____?
Correct Answer: C
The cerebrum makes up about 85% of the human brain's weight and controls higher cognitive functions, memory, and voluntary movement.
Q605.The M.K.S. system was first introduced by ____?
Correct Answer: A
The MKS system of units (Meter-Kilogram-Second) was proposed by the Italian electrical engineer Giovanni Giorgi in 1901.
Q606.The main Constituent of Biogas is ____?
Correct Answer: A
Methane (CH4) makes up 50% to 75% of biogas, which is produced by the anaerobic digestion of organic matter.
Q607.What is the largest artificial object in space?
Correct Answer: A
The International Space Station (ISS) is the largest space habitat ever constructed, measuring over 100 meters long.
Q608.What is the largest cell in the human body?
Correct Answer: A
The female ovum (egg cell) is the largest cell in human biology, measuring about 0.1 mm and visible without magnification.
Q609.What is the largest flower in the world?
Correct Answer: C
Rafflesia arnoldii, native to rainforests of Sumatra and Borneo, grows individual blooms up to 3 feet across.
Q610.What was the first planet to be discovered using a telescope?
Correct Answer: A
Uranus was discovered by William Herschel in 1781. The other inner/outer planets had been known since antiquity.
Q611.Which of the following has the highest melting point?
Correct Answer: B
Tungsten has an exceptionally high melting point of 3,422°C (6,192°F), the highest of any stable metallic element.
Q612.Which of the following is the smallest endocrine gland in the human body?
Correct Answer: B
The pituitary gland is a pea-sized endocrine structure located at the base of the brain (often cited in past papers as the smallest).
Q613.Which of the following has the highest energy?
Correct Answer: A
Gamma rays are positioned at the extreme high-frequency end of the EM spectrum, giving them the highest photon energy.
Q614.Which of the following has the largest wavelength?
Correct Answer: C
Among the options, infrared light has the longest wavelength, situated between visible red light and microwaves.
Q615.Which of the following is the smallest, shallowest and coldest ocean?
Correct Answer: C
The Arctic Ocean is the smallest and shallowest of the world's five major oceans, largely covered by sea ice year-round.
Q616.Which of the following planets has the smallest diameter?
Correct Answer: A
Since Pluto's reclassification as a dwarf planet, Mercury is the smallest major planet in the Solar System.
Q617.Which of the following was first to be discovered in the chromosphere of the sun?
Correct Answer: D
Helium was discovered in 1868 as a bright yellow signature in the Sun's chromosphere before it was isolated on Earth.
Q618.Which of the following waves has the smallest velocity in vacuum?
Correct Answer: B
Sound is a mechanical wave requiring a physical medium to travel. It cannot travel in a vacuum, so its speed is zero.
Q619.Which of the following spacecraft enabled man to step on the moon first?
Correct Answer: D
The Apollo 11 lunar module landed Neil Armstrong and Buzz Aldrin on the Moon's surface on July 20, 1969.
Q620.The M.K.S. system was first introduced by ____ ?
Correct Answer: A
The MKS (Metre-Kilogram-Second) system of units was introduced by Italian physicist Giovanni Giorgi in 1901.