List of top Environmental Sciences Questions asked in CUET (PG)

Which of the following microbial species are helpful in the denitrification process?
Microbial species:
A. Rhizobium sp
B. Achromobacter
C. Pseudomonas
D. Nitrosomonas
E. Azotobacter
Choose the correct answer from the options given below:

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:

The ”Biofilm” is a thin layer that constitutes:

Which of the following metal is bioaccumulative in nature but does not undergo biomagnification to cause adverse health effects?

Which of the following reproduce sexually by forming ascospores, which are small sacs commonly referred to as ”asci”?

What will be the energy of 1 mole of photons having a wavelength of 200 nm?
Planck’s constant, \( h = 6.6 \times 10^{-34} \, \mathrm{Js} \) and Speed of light, \( c = 3.0 \times 10^8 \, \mathrm{ms^{-1}} \)

Match List I with List II:

LIST I	LIST II
A. Ligase	I. Reduce topological strain
B. Helicase	II. Adds phosphate group
C. Gyrase	III. Joins two open ends of DNA
D. Kinase	IV. Unwinds the DNA

Choose the correct answer from the options given below:

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?

Cooking pans made from which of the following metals would need less heat to achieve a certain cooking temperature?

Which of the following structure cannot be taken by the single subunit protein?

Island communities are a special case in community dynamics in which species makeup is driven by interaction between:
A. Predator abundance
B. Disturbance
C. Colonization
D. Extinction
Choose the correct answer from the options given below:

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

Arrange the following II B (or 12) group elements in the increasing order of their Pauling electronegativities:
Elements:
A. Zn
B. Hg
C. Cd
Choose the correct answer from the options given below:

Hypothalamus is present in which part of the brain?

The coal mining carried out by landowners/local miners in Meghalaya state of India in the form of a long narrow opening is known as:

Which among the following is/are false?
Statements:
A. Most conifers are monoecious, evergreen, and produce resin.
B. Cycads are dioecious.
C. There is one living species in the phylum Ginkophyta.
D. Gnetum shows the presence of two distinct archegonia in a female gametophyte.
E. Compositae family is known as Asteraceae.
Choose the correct answer from the options given below:

In which of the following pairs of chemical species does sulfur (S) not have the same oxidation number?

Match List I with List II:

LIST I (Species)	LIST II (Number of chromosomes)
A. Triticum vulgare	I. 18
B. Brassica oleraceae	II. 42
C. Arabidopsis thaliana	III. 4
D. Machaeranthera gracilis	IV. 10

Choose the correct answer from the options given below:

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

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 greenhouse gases is not emitted from landfill sites?

Which of the following phosphate species does not exist in water?

Match List I with List II:

LIST I - Ecological Parameters	LIST II - Unit of Measurement
A. Net primary productivity	I. g/m2
B. Absorbed photosynthetically active radiation	II. g/L
C. Phosphorus	III. Joules/area/year
D. Plant biomass	IV. gC/area/year

Choose the correct answer from the options given below:

A black body has a temperature of 2900 K. The wavelength of peak emission ($λ_{max}$) of the radiation emitted from it is approximately equal to:

Which of the following codons are called nonsense codons?