3. Soaps are obtained by_________.
(a) saponification of oils or fats
(b) alkaline hydrolysis of glycerol
(c) acidic hydrolysis of esters of fatty acids and glycerol
(d) All of these
4. Ascorbic acid is the chemical name of _________.
(a)vitamin D (b) vitamin A (c) vitamin C (d) vitamin B6
5. The process involving heating of rubber with sulphur is called_________.
(a) galvanization (b) vulcanization (c) bessemerization (d) sulphonation
6. Ethyl alcohol on oxidation with K2Cr2O7 gives_________.
(a) acetic acid (b) acetaldehyde (c) formaldehyde (d) formic acid
7. Lucas test is performed for_________.
(a) amines (b) alcohols (c) ethers (d) alkyl halides
8. Ethene is obtained from ethyl bromide by_________.
(a) Nucleophlic substitution
(b) hydrolysis
(c) simple heating
(d) dehydrohalogenation
9. Which of the following is an example of elimination reaction?
(a) Chlorination of methane
(b) Dehydration of ethanol
(c) Nitration of benzene
(d) Hydroxylation of ethylene
10. Which of the following is an aromatic hydrocarbon?
(a) cyclo pentene (b) cyclo hexane (c) naphthalene (d) 1,3-butadiene
11. According to Werner’s theory the secondary valencies of a central metal atom correspond to its_________.
(a) oxidation state
(b) coordination number
(c) sum of the two
(d) none of these
12. Most common oxidation states shown by cerium are_________.
(a) +2,+4 (b) +3,+4 (c) +3,+5 (d) +2,+3
13. Quartz is the crystalline variety of
(a) Si (b) SiO2 (c) Na2SiO3 (d) SiC
14. Heavy water is used in atomic reactor as_________.
(a) coolant
(b) moderator
(c) both coolant and moderator
(d) neither coolant nor moderator
15. The main function of roasting is_________.
(a) reduction (b) oxidation (c) concentration (d) separation
I saw the physics model paper of your university for the entrance exam of 2012-2013..I have not seen any numerical problems in the question paper.I want to ask that are the numerical problems included in the syllabus?