1. Which among the following is not an antibiotic?

2. Shape-selective catalysis is a reaction catalysed by

3. Denaturation of protein

4. The photochemical smog can be suppressed by

5. Match List I with List II and select the correct answer using the codes given below
$\begin{array}{cccc}& \mathrm{List}I& & \mathrm{List}\mathrm{II}\\ 1.& \mathrm{Buna}-N& a\mathrm{.}& \mathrm{Phthalic}\mathrm{acid}\mathrm{and}\mathrm{ethylene}\mathrm{glycol}\\ 2.& \mathrm{Nylon}-66& b\mathrm{.}& \mathrm{Terephthalic}\mathrm{acid}\mathrm{and}\mathrm{ethylene}\mathrm{glycol}\\ 3.& \mathrm{Dacron}& c\mathrm{.}& \mathrm{Hexamethylenediamine}\mathrm{and}\mathrm{adipic}\mathrm{acid}\\ 4.& \mathrm{Glyptal}\mathrm{plastic}& d\mathrm{.}& \mathrm{Isobutylene}\mathrm{and}\mathrm{isoprene}\\ & & e\mathrm{.}& \mathrm{Acrylonitrile}\mathrm{and}\mathrm{butadiene}\end{array}$

6. Detergents are known to pollute rivers and waterways. However, detergents can be made biodegradable and pollution free by taking

7. The Vitamin which is either soluble in water nor in fat is

8. Which one of the following statements about aminoacids is not true?

9. Which of the following is bacteriostatic?

10. Match the list I and List II and pick the correct matching from the codes given below
$\begin{array}{ccc}\mathrm{List}I& & \mathrm{List}\mathrm{II}\\ a\mathrm{.}\mathrm{Thymine}& & 1.\mathrm{Pyrimidine}\mathrm{base}\\ b\mathrm{.}\mathrm{Thiamine}& & 2.\mathrm{Enzyme}\\ c\mathrm{.}\mathrm{Insulin}& & 3.\mathrm{Cell}\mathrm{and}\mathrm{component}\\ d\mathrm{.}\mathrm{Pepsin}& & 4.\mathrm{Hormone}\\ e\mathrm{.}\mathrm{Phoispholipids}& & 5.\mathrm{Vit}{B}_4\end{array}$

11. One of the different amino acids which can be synthesized un the body is

12. The efficiency of an enzyme to catalyze a reaction is due to its capacity to

13. Which one of the following compounds is used as a body deodorant?

14. Biotin is an organic compound present in yeast. Its deficiency in diet causes dermatitis and paralysis. It is also known as

15. In biological systems, the RNA molecules direct the synthesis of specific protein which are characteristic of each kind of organism. This process is known as

16. Which of the following is/ are true?
(a) Sucrose is a non reducing sugar
(b) Glucose is oxidised by bromine
(c) Glucose rotates plane polarized light in clock wise direction
(d) Fructose is oxidised by bromine water
Select the correct answer using the coded given below

17. Match listI and list II and select the correct answer using the code given below the lists
$\begin{array}{ccc}\mathrm{List}1& & \mathrm{List}\mathrm{II}\\ (\mathrm{Chemotherapeutic}\mathrm{agents})& & \mathrm{Examples}\\ 1.\mathrm{Antibiotic}& & a\mathrm{.}\mathrm{Chloroxylenol}\\ 2.\mathrm{Antiseptic}& & b\mathrm{.}\mathrm{Chlorampheniramine}\\ 3.\mathrm{Analgesic}& & c\mathrm{.}\mathrm{Chloramphenicol}\\ 4.\mathrm{Tranquilliser}& & d\mathrm{.}\mathrm{Diclophenac}\mathrm{sodium}\\ & & e\mathrm{.}\mathrm{Veronal}\end{array}$

18. In DNA molecule $\frac{A+T}{G+C}$ratio is 0:9. If the number of moles of cytosine in the molecule of DNA is 300,000 the number of moles of thymine in the molecule is

19. $\alpha \mathrm{and}\beta$ glucose differ in the orientation of -OH group around

20. The principal buffer present in human blood

21. An alteration in the base sequence of nucleic acid molecule is called

22. Carbohydrates are stored in human body as the polysaccharide

23. Benzaldehyde condenses with N, N-dimethylaniline in presence of anhydrous ZnC$l_2$ to give

24. Barbituric acid and its derivatives are well known as

25. Which set is the correct pairing set (or contains complementary pairs) responsible for the structure of DNA? (A-adenine, G-guanine, C-cytosine, T-thymine, U-uracil)

26. The pH value of the solution in which a particular amino acid does not migrate under the influence of an electric field is called the

27. The functional group, which is found in amino acid is

28. Enzymes are made up of

29. Cellulose is a polymer of

30. Purine derivative among the following bases is

31. $\alpha$-Helix is found in

32. Which is correct statement?

33. What happens when conc. $H_2{\mathrm{SO}}_4$ is treated with sugar?

34. The chemical change in DNA molecule that could lead to synthesis of protein with an altered amino acid sequence is called

35. Last product of protein digestion is

36. The structural feature which distinguishes proline from other natural $\alpha$ - amino acids is

37. Which of the following has magnesiun?

38. Enzymes in the living systems

39. The commonest disaccharide has the molecular formula

40. In DNA the complementary bases are

41. Which of the following is a test for proteins ?

42. Glucose + Tollen's reagent $\to$ Silver mirror. The process shows :

43. Hydrolysis of sucrose is called