Environmental Science MCQs

✅ The correct answer is option B.
Anthrax is a serious infectious disease caused by gram-positive, rod-shaped bacteria known as Bacillus anthracis. Anthrax can be found naturally in soil and commonly affects domestic and wild animals around the world.

✅ The correct answer is option D.
The first global environmental protection treaty “The Montreal Protocol” was signed on September 26 in 1987.

✅ The correct answer is option B.
The darkening of the skin due to arsenic poisoning is called diffuse melanosis.

✅ The correct answer is option C.
The human range is commonly given as 20 to 20,000 Hz, although there is considerable variation between individuals, especially at high frequencies, and a gradual loss of sensitivity to higher frequencies with age is considered normal. Sensitivity also varies with frequency, as shown by equal-loudness contours. Here, option C is correct.

✅ The correct answer is option D.
Nitrogen oxides are irritating to the eyes, skin, nose, mucous membranes and respiratory tract.

✅ The correct answer is option A.
CPCB is the regulatory authority of quality in India.

✅ The correct answer is option B.
Biogas generation is mainly based on the principle of biodegradation. Biogas is a type of gas which is produced from the decomposition of any biodegradable waste by various bacteria. It results the formation of methane.

✅ The correct answer is option B.
The National Maritime Day is celebrated every year on April 05 to illustrate the awareness in supporting intercontinental commerce and the global economy as the most well-organized, safe and sound, environmentally responsive approach of transporting goods from one corner to another corner of the world.

✅ The correct answer is option D.
If you want to keep an object cool while exposed to direct sunlight, wrap it in aluminum foil with the shiny side facing outward.

✅ The correct answer is option B.
The dew point is the temperature to which air must be cooled to become saturated without changing the pressure.