Chemistry True and False 2nd year 2010
2nd Year Chemistry Notes
Chemistry True and False 2nd year 2010
1. PVC is a polymer of benzene.
2. Fructose is a reducing sugar.
3. The deficiency of vitamin C causes scurvy.
4. Methanol causes blindness.
5. Diamond is the hardest known substance in the world.
6. The properties of boronoxide are acidic.
7. Graphite is a good conductor of electricity.
8. The deficiency of vitamin A causes night-blindness.
9. Wurtz reaction can be used to prepare Methane.
10. Bakelite is polymer of phenol and alkyl halide.
11. The heat of hydration of Li+ ion is equal to that of Cs+ ion.
12. The molecule of H2S is non-linear.
13. CuSO4 in excess of NH3 forms Cu(OH)2.
14. Compounds have benzene ring are called aeromatic.
15. Polyethenes are the most common plastics.
16. Lead-containing paints are banned because of the high cost.
17. Na2CO3 decomposes on heating.
18. The atomic weights of isotopes are different because of the difference in the number of protons.
19. Gastric juice is pale yellow in colour.
20. Ascorbic acid is enzyme.
21. The main function of carbohydrates is to circulate blood.
22. The preparation of vegetable ghee is a dehydrohalogenation process.
23. There are eight periods and seven groups in the Periodic table.
24. Hydrated copper sulphate is a white crystalline solid.
25. Pure diamond is colourless.
26. The first transition series starts from scandium and ends at zinc.
27. Markownikoff’s rule is not applicable to alkynes.
28. Methylated spirit is ethanol containing some methanol.
29. A functional group is the most reactive part of the molecule.
30. Vitamins A.D.K are water-soluble vitamins.
31. Kerosene oil is a petroleum product.
Answers to True and False
Five Year Papers
1. False
2. True
3. True
4. True
5. False
6. True
7. True
8. False
9. False
10. False
11. True
12. False
13. True
14. True
15. False
16. True
17. False
18. False
19. False
20. False
21. False
22. False
23. False
24. False
25. True
26. True
27. False
28. True
29. True
30. False
31. True
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