2018 JAMB CBT 10th 7am CHEMISTRY QUESTIONS AND ANSWERS (DAY 2)

CHEMISTRY*
1 :- liquid nitrogen can be used as CORRECT ANSWER =
rocket fuel
2 :- what volume of oxygen at stp is required to burn 60g
of carbon completely CORRECT ANSWER = 112.0DM3
3 :- when a crystal was added to its solution no further
dissolution was observed.this showed that the solution was
CORRECT ANSWER = saturated
4 :- which of the following statement is peculiar to
isotopes CORRECT ANSWER = they have different numbers
of electrons
5 :- in the reaction above the oxidizing agent is CORRECT
ANSWER = 2KI
6 :- the diagram above represents CORRECT ANSWER = p
orbital
7 :- tin can be extracted from CORRECT ANSWER = ethanol
8 :- the alkanol obtained from the destrurctive distillation
of wood is CORRECT ANSWER = 297.3cm
9 :- when magnesium reacts with tetraoxosulphate(VI)acid
312cm3 of hydrogen gas was was collected at 28C and
750mmhg.calculate the volume of hydrogen gas at stp
CORRECT ANSWER =
10 :- the basicity of CH3COOH is CORRECT ANSWER = 1
11 :- when a compound Q with molecular formula
C2H4O2 reacts with excess methanol in the presence of a
catalyst, a sweet smelling substance is produced.the
structural formula of Q is CORRECT ANSWER =
12 :- how many faraday will be needed to deposit 9.6g of
copper during the electrolysis of a solution of a copper
salt CORRECT ANSWER = 0.3F
13 :- the derivative of methane that can be employed in
dry cleaning is CORRECT ANSWER = Ccl4
14 :- the metal used in the construction of bridges is
CORRECT ANSWER = iron
15 :- when a compound Q with molecular formula
C2H4O2 reacts with excess methanol in the presence of a
catalyst, a sweet smelling substance is produced.the
reaction between Q and methanol is CORRECT ANSWER =
esterification
16 :- the alkali majorly used for making liquid soap is
CORRECT ANSWER = CALCIUM HYDROXIDE
17 :- in electrolplating iron with zinc the cathode is iron
because CORRECT ANSWER = zn2+ will be discharged and
deposited at the cathode
18 :- which of the following is likely to be responsible for
flavor of fruits and smell of flowers? CORRECT ANSWER =
CH3COOCH3
19 :- the main product formed when excess acidified
K2CR2O7 reacts with propan-1-ol is CORRECT ANSWER =
propanoic acid
20 :- calculate the pH of 0.001mol/dm3 HCL? CORRECT
ANSWER = 3

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