Tag: TIFR Previous Year Question Papers Biology PYQ With Answer Key Download

12. Element X crystallizes into an FCC lattice with cell edge of 200 pm. The density of the element is 5 g/cm3. 200 g of this element contain how many […]

10. The graph below gives an interaction potential between two atoms as a function of the distance between them. What sort of bonds do you expect the two atoms to […]

9. The three pK’s of the amino acid lysine are approximately 2.1, 9.2 and 10.8. Which of the following is true in an electrophoresis experiment: a. Lysine does not migrate […]

8. The most basic naturally occurring amino acid is: a. lysine b. arginine c. serine d. tryptophan Most Basic Naturally Occurring Amino Acid: Arginine Explained Arginine stands as the most […]

7. Between ethanol, ethylamine and ethanethiol, which is the most nucleophilic: a. ethanol b. ethylamine c. ethanethiol d. Both ethylamine and ethanethiol are equally nucleophilic Ethylamine is the most nucleophilic […]

6. The compound H2NC(CN)=C(CN)NH2 is a tetramer of HCN (hydrocyanic acid). How many geometrical isomers are possible in this compound? a. 1 b. 2 c. 4 d. 6 2 geometrical […]

5. Reactions with positive free energy change (ΔG0>0) can be made to occur by: a. coupling them with exergonic reactions via a common intermediate b. manipulating the concentrations of products […]

4. The pOH of a solution of NaOH is 11.30. [H+] in M of this solution is: a. 5.0 x 10-12 b. 6.2 x 10-8 c. 2.0 x 10-3 d. […]

3. Which of the following molecules have a sugar moiety as an integral part? a. Amino acids b. Nucleic acids c. Phospholipids d. All of the above Nucleic acids contain […]

2. 0.22 g of a colourless oxide of nitrogen occupies 112 ml at STP. The compound is: a. NO b. N2O c. NO2 d. N2O2 Quick Solution 0.22 g of […]