LinkedIn Insight B.Sc.-Basic Chemistry-I-Mumbai-April 2017 - Grad Plus

B.Sc.-Basic Chemistry-I-Mumbai-April 2017

MUMBAI UNIVERSITY

Subject:

Semester:1

 

[Total Time: 2 Hours]
[Total Marks:75]
N.B.: 1 All questions are compulsory
2) All questions carry equal marks.
3) Figures to the right indicate marks.
4) Draw meat labeled diagrams wherever necessary
5) U df log table and non-programmable calculators is slowed.
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Q. 1) Do as directed: (any fifteen) (15M)

State the IUPAC name :

1) C7H16

2) CH3CI

3) CH3-CH=CH-CH3

4 C3H7COOH

5) CH2OH-CHOH-CH2ON

6) (CH3-CH2)N 

7) CH3-CH2-CH2-CO-CO-CH3

Explain the terms

8) Crystal Structure

9) ionic bond

10) Octet rule

11) Dipole

12) Hydrogen bond

13) Lewis Acid

14) Normality

Give an example af

15) Body entra cube

16) Planarangement

17) One of the following is showing relation between pH and pOH.

a) pH/pOH = 14            b) 14-pH = POH
c) pH x pOH = 14          d) 14/pOH = pH

18) The property of water whereby molecules tend to stick to one another is called as __________

19) Water has a high surface tension True or False

20) Which one of the following is a buffer solution:

a) NACl/HCI                     b) H3CCOOH/CH3COONa
c) K2SO4/H2SO4               d) NH4 OH/KOH

 

Q. 2) a) Draw structures of the following organic compounds. (8M)

i) Methoxy methane

ii) 2 chloro Propanamine 

iii) Chlorobenzene

iv) 1-butanol

 

b) Lifting suitable examples. Explain simple and mixed ether. (7M)

 

OR

 

c) Draw structures of the following organic compounds. (8M)

i) pentunel                          ii) Bromocyclo pentane
iii) Ethoxy Ethne               
iv) Methantimide

 

d) Discuss IUPAC nomenclature of carboxylic acid and dicarboxylic acid. (7M)

 

Q. 3) a) State the conditions of a Lewis dot Structure in a covalent bond formation. Draw the dot cross structure of CH. (8M)

 

b) Explain on the basis of hydrogen bonding, the solubility of ethanol in water. (7M)

 

OR 

 

c) Compare and contrast between covalent and Tonic bond. (8M)

 

d) Enlist the characteristics of chemical bonds. (7M)

 

Q. 4) a) Derive the relationship between pH and pOH and calculate the concentration of H+ ion of a solution having pH 6.45. (8M)

 

b) Explain the role of water in the biomolecular structure. (7M)

 

OR 

 

c) Discuss properties of water and calculate amount of sodium hydroxide required in grams to prepare 700 ml of 0.25 molar solution of sodium hydroxide . (given molar mass of NaOH=40) (8M)

 

d) Define Buffer solution, give its types with example and mechanism of action of Basic buffer. (7M)

 

Q. 5) Write short notes on any three of the following: (15M)

i) Nomenclature of coordination compounds

ii) Cyclic hydrocarbons

ii) Nature of coordinate bond

iv) Lattice structure of water

v) Applications of buffer solutions
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