;
‫بسم هللا الرمحن الرحيم‬
Biologicals Department
Fourth level students
Organic chemistry (1)
Chem 2410
Time allowed: 1 hour
KINGDOM OF SAUDI ARABIA
MINSTRY OF HIGH EDUCTION
SALMAN BIN ABDULLAZIZ UNIVERSITY
College of Science &Humanities
(Girls Departments)
MID TERM EXAM )Aِ( 1436/ 1437
:‫االسم‬
ANSWER THE FOLLOWING QUESTIONS
I- First Question
[10 marks]
Choose the correct answer and write your answer in the the answer sheet
1- ---------The ability of atoms in forming stable bonds with itself and joining
up in chains or rings.
a-
functional group
b- Catenation
c- Alkyl group
2- What is the hybridization of the carbon atom in ethyne------a- SP2
b- SP3
c- SP.
3- A -------------homologous series is a series of compounds that have the same
functional group, and each member differs from the next member by a – CH2 –
unit in their formulae.
a- homologous series
b- Alkyl group
c- functional group .
4- ------------Compounds with the same molecular formula but different structures
a- Constitutional Isomerism
b- Isomerism
5- General formula of akane-------------------a -CnH2n
b - CnH2n+2
c- CnH2n-2
c- Geometrical Isomerism
6- Which is 1,2-dimethylcyclobutane?
(a)
(b)
(c )
(d)
7- Which one of the following compounds can exist as a pair of geometric isomers?
8. The compound of the highest boiling point is:
9- Grignard reagent can be made of:
a- (CH3)2CHBr+Na
b- (CH3)2CHBr +Mg
c- (CH3)2CHBr +LiAlH4
10- What is the best reagent used for the following reaction?
a- CCL4
b- FeCl3
c- UV
11- The compounds known as paraffins are ;
(a) Haloalalkanes
(b) Alkenes
(c) Alkanes
(d) Alkynes
12- Which is 4-ethyl-3,3-dimethylhexane?
b2
b-
c-
d-
13- Which is 1,2-dimethylcyclobutane?
a-
C-
II – Second Question
Complete the following equations:
WITH BEST WISHES
3
b-
d-
[2marks]