List of top Environmental Sciences Questions asked in Common University Entrance Test

Which of the following is an example of a condition caused by chromosomal abnormality?

Which of the following forest types occupies the largest area in India?

An analyst reported 40.9 ppm Na in all 10 analyses of the standard solution having a true value of 40.11 ± 0.3 ppm. This data is:

A sample has an absorbance of 2. Its transmittance would be:

While separating the protein using polyacrylamide gel electrophoresis, the major ions playing an important role in stacking the protein are:
i. Glycine of the running gel buffer
ii. Chloride ion
iii. The protein itself
Which of the following is correct?

Find the limit of resolution of a microscope where the numerical aperture of the objective is 1.4 and the beam of light has a wavelength of 400 nm:

Which of the following is a polar solvent?

The rate of decrease of dissolved oxygen (\(L_t\)) with time \(t\) in a wastewater sample is directly proportional to the amount of oxygen present in the sample at time \(t\). The unit of rate constant \(k\) will be:

Match List I with List II:

LIST I	LIST II
A. Fragmentation	I. Degradation of detritus into simple inorganic substances by bacteria and fungi
B. Humification	II. Release of nutrients from humus by microbial action
C. Catabolism	III. Breakdown of detritus by earthworms into smaller particles
D. Mineralisation	IV. Dark coloured substances, highly resistant to microbial action

Choose the correct answer from the options given below:

The process that results in a chemical becoming increasingly concentrated at successive higher trophic levels in a food web is referred to as:

Acidic soils are mostly found in:
A. Cold climate
B. Hot climate
C. Dry climate
D. Humid climate
Choose the correct answer from the options given below:

Arrange the following greenhouse gases in increasing order of their relative contribution to global warming:
Greenhouse gases:
A. CO₂
B. N₂O 
C. CFCs 
D. CH₄
Choose the correct answer from the options given below:

Arrange the following soil horizons as they occur from top to bottom:
Horizons:
A. O horizon
B. A horizon
C. B horizon
D. E horizon
E. C horizon
Choose the correct answer from the options given below:

Which of the following is a criteria pollutant as per National Ambient Air Quality Standards?

In sewage water, which of the following is expected to be present in the highest quantity (mg/L)?

Photochemical smog formation in ambient atmosphere requires:
A. Volatile hydrocarbon
B. Ozone
C. SO2
D. Sunlight Temperature
E. NOx
Choose the correct answer from the options given below:

Match List I with List II:

LIST I (Aquaculture system)	LIST II (Potential Environmental Impact)
A. Coastal Pond	I. Transfer of diseases
B. Inland Pond	II. Introduction of exotic species
C. Mollusk Culture	III. Destruction of mangroves
D. Net Pen/Cage	IV. Degradation of land

Choose the correct answer from the options given below:

The publication ’The Future We Want’ is the outcome of:

Arrange the following phases of successional development of a vegetation community in reverse order (last to first) as suggested by F.E. Clements:
Phases:
A. Phase of migration
B. Phase of nudation
C. Phase of ecesis
D. Phase of reaction
E. Phase of stabilization
Choose the correct answer from the options given below:

Stratospheric ozone protects us from:

Which of the following greenhouse gases is not emitted from landfill sites?

A sound pressure level of 40 decibels is equivalent to a sound pressure of:

The monumental book ’Silviculture of Indian Trees’ is written by:

Polar species tend to have longer geographical ranges than tropical species in many taxonomic groups. This is generally known as: