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Environmental Science MCQ Questions and answers | EVS MCQ

Learn and practice General Knowledge questions and answers on Environmental Science MCQ with very easy and understandable explanations. EVS MCQ questions are very helpful different type of competitive ex Page-3 section-7

Each section contains 100 MCQs on Environmental Science .
21
Lead poisoning
Discuss
Answer & Solution
Answer: Option A
Solution:
Lead poisoning reduces O2 carrying capacity of hemoglobin in blood.
22
A heat transfer process in the atmosphere that depends upon the movement of air is:
Discuss
Answer & Solution
Answer: Option D
Solution:
Convection is the transfer of heat by the movement of a fluid (liquid or gas) between areas of different temperature. Warm air is less dense than cold air, and so convection currents can form in the presence of a temperature gradient.
23
The method of simultaneous integration of trees with agricultural crops is called
Discuss
Answer & Solution
Answer: Option A
Solution:
Agroforestry is the integration of trees and shrubs with open-space agriculture allowing simultaneous, multi-use purposes. Agroforestry is a worldwide practice since the dawn of farming.
24
Utilisation of natural resources in moderate manner to remaining something for the next generation is termed as
Discuss
Answer & Solution
Answer: Option B
Solution:
Sustainable development is the organizing principle for meeting human development goals while simultaneously sustaining the ability of natural systems to provide the natural resources and ecosystem services based upon which the economy and society depend.
25
The ratio of the mass of water vapour in a given volume (parcel) of air to the mass of the remaining dry air describes the:
Discuss
Answer & Solution
Answer: Option B
Solution:
The ratio of the mass of water vapour in a given volume (parcel) of air to the mass of the remaining dry air describes the mixing ratio.
26
Which of the following is the best indicator of the actual amount of water vapour in the air?
Discuss
Answer & Solution
Answer: Option D
Solution:
Dew point is a good indicator of the air's actual water vapour content, unlike relative humidity, which takes the air's temperature into account. High dew point indicates high water vapour content; low dew point indicates low water vapour content.
27
If the sun suddenly began emitting more energy, the earth's radiative equilibrium temperature would:
Discuss
Answer & Solution
Answer: Option A
Solution:
If the sun suddenly began emitting more energy, the earth's radiative equilibrium temperature would increase.
28
If the average temperature of the sun increased, the wavelength of peak solar emission would:
Discuss
Answer & Solution
Answer: Option A
Solution:
If the average temperature of the sun increased, the wavelength of peak solar emission would decrease.
29
When the air temperature increases, the saturation vapour pressure will:
Discuss
Answer & Solution
Answer: Option A
Solution:
At higher temperatures, the kinetic energy of water vapour molecules increases, so increasing the pressure
30
As the air temperature increases, the air's capacity for water vapour:
Discuss
Answer & Solution
Answer: Option A
Solution:
The air's capacity for water vapour increases as air temperature increases. Air with a temperature of 30°C can hold more than three times as much water vapour as air at 10°C. Relative humidity varies significantly when the temperature changes, even when the actual amount of water vapour in the air remains the same.