A. SO2
B. NO3
C. Hg fungicides
D. O3 and CO2
✅ The correct answer is option C.
Hg fungicides has the problem of biomagnifications.
Hg fungicides has the problem of biomagnifications.
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.
1872. Atmospheric ozone layer which protect us from UV-B and C is getting depleted most by addition of
A. chlorofluorocarbon
B. carbon monoxide
C. carbon dioxide
D. sulpur dioxide
✅ The correct answer is option A.
Atmospheric ozone layer which protect us from UV-B and C is getting depleted most by addition of chlorofluorocarbon.
Atmospheric ozone layer which protect us from UV-B and C is getting depleted most by addition of chlorofluorocarbon.
1873. How do red and blue light differ?
A. Blue light has a higher speed of propagation.
B. The wavelength of red light is longer.
C. Red light has a higher intensity.
D. Red and blue light have different directions of polarization.
✅ The correct answer is option B.
Red light has a slightly longer wavelength than blue light. Red light (at one end of the visible spectrum) has a longer wavelength than blue light.
Red light has a slightly longer wavelength than blue light. Red light (at one end of the visible spectrum) has a longer wavelength than blue light.
1874. The word Tsunami is derived from two Japanese words
A. Tsu(big) and nami(flow)
B. Tsu(harbour) and nami(wave)
C. Tsu(big wave) and nami(wave)
D. None of these
✅ The correct answer is option B.
Tsunami is a Japanese word from a double root: tsu, meaning port or harbour, and nami, meaning wave.
Tsunami is a Japanese word from a double root: tsu, meaning port or harbour, and nami, meaning wave.
1875. Minute particles and liquid droplets are collectively called
A. Convection current
B. Ozone
C. UV radiation
D. Aerosols
✅ The correct answer is option D.
Minute particles and liquid droplets collectively called aerosols also are suspended in the air.
Minute particles and liquid droplets collectively called aerosols also are suspended in the air.
1876. Minamata disease was caused by pollution of water by
A. Mercury
B. Lead
C. Tin
D. Methyl iso cyanate
✅ The correct answer is option A.
Minamata disease (M. d.) is methylmercury (MeHg) poisoning that occurred in humans who ingested fish and shellfish contaminated by MeHg discharged in waste water from a chemical plant.
Minamata disease (M. d.) is methylmercury (MeHg) poisoning that occurred in humans who ingested fish and shellfish contaminated by MeHg discharged in waste water from a chemical plant.
1877. Water used for paper mills should not contain
A. magnesium
B. sodium
C. iron
D. chlorine
✅ The correct answer is option C.
Water used for paper mills should not contain iron.
Water used for paper mills should not contain iron.
1878. On which date was the Stockholm Conference on Human Environment held?
A. July 6th 1974
B. Aug 8th 1976
C. June 5th 1972
D. Dec 12th 1990
✅ The correct answer is option C.
On June 5th 1972 the Stockholm Conference on Human Environment was held.
On June 5th 1972 the Stockholm Conference on Human Environment was held.
1879. The air temperature is 45o F, the wind is blowing at 30 MPH, and the wind chill temperature is 15o F. These conditions would be equivalent to:
A. A 15o F air temperature and 0 MPH winds
B. A 30o F air temperature and 45 MPH winds
C. A 30o F air temperature and 15 MPH winds
D. A 15o F air temperature and 30 MPH winds
✅ The correct answer is option A.
The air temperature is 45o F, the wind is blowing at 30 MPH, and the wind chill temperature is 15o F. These conditions would be equivalent to a 15o F air temperature and 0 MPH winds.
The air temperature is 45o F, the wind is blowing at 30 MPH, and the wind chill temperature is 15o F. These conditions would be equivalent to a 15o F air temperature and 0 MPH winds.
1880. Which of the following has the least similarity when comparing two examples of the same biome located in different parts of the world?
A. Climate
B. Latitude
C. Continent
D. Elevation
✅ The correct answer is option C.
Continent has the least similarity when comparing two examples of the same biome located in different parts of the world.
Continent has the least similarity when comparing two examples of the same biome located in different parts of the world.