EAMCET Chemistry Model Questions with Key and Solutions

Chemistry in Everyday Life

1. Most widely used artificial sweetener in soft drinks is-
1) Saccharin 2) Sucrolose 3) Aspartame 4) All the above

2. A mixture of Chloroxylenol and α-terpineol is used as
1) Antibiotic 2) Antiseptic 3) Antacid 4) Analgesic

3. A drug that is analgesic as well as antipyretic is
1) Aspirin 2) Analgin 3) Both Aspirin and Analgin 4) Paracetamol

4. Condensation product of Melonic acid and urea exhibits
1) Keto-enol tautomerism 2) Optical isomerism 3) Functional isomerism 4) Geometrical isomerism

5. Which of the following is used as a 'morning after pill'?
1) Norethindrone 2) Mifepristone 3) Novestrol 4) Bithionol

6. 1% Phenol solution is-
1) Antiseptic 2) Antimicrobial 3) Disinfectant 4) Antibiotic

Polymers

7. Uncommon monomers in Buna-S and Buna-N rubber are respectively-
1) Isoprene and Buta diene 2) Neoprene and Styrene
3) Butadiene and ethene 4) Styrene and Acrylo Nitrile

8. The polymer used in paints is-
1) Nylon 2) Glyptal 3) PMMA 4) Choroprene

9. Natural Poly amide Polymer is
1) Wool 2) Nylon-6 3) Nylon-66 4) All the above

10. 'Gutta Percha' is-
1) Cis form of rubber 2) Artificial silk 3) Poly Neoprene 4) Trans form of rubber

11. The number average molecular weight can be determined chemically by the method.
1) Berkeley - Hartley method 2) Ostwald dynamic method
3) End group analysis method 4) All the above

Biomolecules

12. Imino acid among the following compounds is
1) Serine 2) Proline 3) lysine 4) Tyrosine

13. Vitamin (s) belong to terpene group is/ are
1) A 2) E 3) K 4) All the above

14. Progesterone is usefulv-
1) As birth control agent 2) For preparing the uterus for the implantation of the fertilized egg
3) Both 1 and 2 4) Control the development of female sex organs

15. If one strand of DNA has the sequence of bases A T G C T T G A, the sequence of bases in the complementary strand would be
1) T C C G A A C T 2) T A G C T A G T
3) T A G C T A T G 4) T A C G A A C T

16. RNA and DNA are chiral molecules, this is mainly due to presence of
1) L-Sugars 2) D-sugars 3) Both 1 and 2 4) Base and Phosphates

KEY: 1-3; 2-2; 3-3; 4-1; 5-2; 6-3; 7-4; 8-2; 9-1; 10-4; 11-3; 12-2; 13-4; 14-3; 15-4; 16-2.

Solutions:

1. As Aspertane is unstable at cooking temperature, it is used in cool drinks, 100 times as sweet as sucrose.
2. This mixture is dettol, used as antiseptic.
3. Aspirin, Analgin both are used to cure fevers, mild aches.
4. Barbituric acid exhibits Keto-enol tautomerism.
5. Mifepristone, Antifertility drug that blocks the effects of progesterone & used as 'morning after pill'.
6. 0.2% phenol solution is antiseptic, but 1% phenol solution is disinfectant.
7. Monomers in Buna-S: Butadiene & Styrene Monomers in Buna-N: Butadiene & Acrylo Nitrile
8. Bakelite is condensation, thermosetting copolymer.
9. Glyptal is used in paints.
10. Wool is natural polyamide. Others are synthetic amides.
11. Gutta percha is transform of rubber.
12. End group analysis is chemical method. Other 2 methods are physical methods.
13. Proline has imino (NH) group. It is secondary amine.
14. The side chains of vitamins A, E, K belong to terpene group.
15. Progesterone is birth control agent, prepares uterus to implant fertilized egg.
16. A = T, G = C
17. Both Optically active
β - D ribose & β - D - deoxy ribose sugars (chiral molecules) are present in RNA & DNA.

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