1998 - JAMB Chemistry Past Questions and Answers - page 4
31
On cracking medicinal paraffin, a gas is evolved which gives a pop sound with a lighted splinter and an oily liquid which decolourizes bromine solution is also obtained. The products of the cracking are ?
A
carbon (IV) oxide and alkyne
B
carbon (ll) oxide and alkene
C
hydrogen gas and alkene
D
hydrogen gas and alkane
correct option: c
Users' Answers & Comments32
How many structural isomers can be drawn for the non-cyclic alkanol with molecular formula C 4H10O?
A
1
B
2
C
3
D
4
correct option: d
Users' Answers & Comments33
An example of aromatic compound is?
A
C6H13OH
B
C6H13CI
C
C6H5OH
D
C6H14
correct option: c
Users' Answers & Comments34
Terylene is synthesized from ethane- 1, 2-diol and benzene - 1, 4-dicarboxylic acid by?
A
addition reaction
B
condensation reaction
C
elimination reaction
D
substitution reaction
correct option: b
Users' Answers & Comments35
Which of the following is true concerning the properties of benzene and hexane?
A
Both undergo substitution reaction
B
Both undergo addition reaction
C
Both are solids
D
Both can decolourized bromine water
correct option: a
Users' Answers & Comments36
A
a covalent bond
B
an electrovalent bond
C
a hydrogen bond
D
a co-ordinate bond
correct option: b
Users' Answers & Comments37
A
+5kJ
B
+15KJ
C
+25KJ
D
+30KJ
correct option: c
Users' Answers & Comments38
A
sodium trioxonitrate (V) and ammonium chloride
B
sodium trioxonitrate (lll) and ammonium chloride
C
lead (ll) trioxonitrate (V) and copper turnings
D
potassium trioxonitrate (V) and copper turnings
correct option: b
Users' Answers & Comments