List of top Environmental Sciences Questions

Hypothalamus is present in which part of the brain?
The correct sequence of classification of house mouse is:
Which of the following is an example of a condition caused by chromosomal abnormality?
Starch, the major product of photosynthesis in leaves, gets accumulated in:
Which of the following were the characteristics of the prebiotic primitive Earth?
Characteristics:
  1. A. Presence of \( \text{CO}_2 \)
  2. B. Presence of \( \text{CH}_4 \)
  3. C. Presence of \( \text{H}_2\text{O} \) vapour
  4. D. Presence of \( \text{O}_2 \)
Choose the correct answer from the options given below:
In sewage water, which of the following is expected to be present in the highest quantity (mg/L)?
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:
Organogenesis in humans takes place during:
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, \( c = 3.0 \times 10^8 \, \mathrm{ms^{-1}} \)
The publication ’The Future We Want’ is the outcome of:
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:
Match List I with List II:
LIST ILIST II
A. LigaseI. Reduce topological strain
B. HelicaseII. Adds phosphate group
C. GyraseIII. Joins two open ends of DNA
D. KinaseIV. Unwinds the DNA
Choose the correct answer from the options given below:
Cooking pans made from which of the following metals would need less heat to achieve a certain cooking temperature?
Stratospheric ozone protects us from:
Match List I with List II:
LIST I (Experiment)LIST II (Conclusion)
A. Photoelectric effectI. Ether medium does not exist
B. Michelson-MorleyII. Light is made up of photons
C. Stern-GerlachIII. Quantization of electronic orbit
D. Franck-HertzIV. Electron spin moment
Choose the correct answer from the options given below:
Bryophytes are divided into three distinct phyla. The liverworts belong to the phylum:
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:
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:
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:
What will be the molar concentration of ammonium ion in a 100 ppb ammoniacal solution?
In which of the following pairs of chemical species does sulfur (S) not have the same oxidation number?
Which of the following chemical species will dominantly exist in water having a pH of less than 5?
Which of the following phosphate species does not exist in water?
When ice starts melting from 0°C to 8.5°C, its density will:
What will be the unit of equilibrium constant for the following reaction?
CH3COCH3 + HCN ⇌ CH3C(OH)(CN)CH3