Page 37 - Ranger SPM 2022 Chemistry

Practice

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Objective Questions 4. What is the percentage of carbon by
mass per molecule in pentene?
1. Which of the following homologous [Relative atomic mass: H = 1, C = 12]
series is used as combustion fuel? A 85.7% C 30.8%
I Alkane B 83.3% D 21.2%
II Alkyne
III Carboxylic acid 5. Ethene gas reacts with hot steam
IV Ester at 300 °C to produce compound X.
A I and II C II and III Concentrated phosphoric acid is used
B I and IV D II and IV as a catalyst in this reaction. What is
compound X?
2. Which of the following is the conversion A Ethane C Ethanoic acid
process of ethanol to ethene gas? B Ethanol D Ethyl ethanoate
A Hydration
B Combustion 6. Diagram 2 shows a device used by
C Dehydration the traffic police to detect alcohol on
road users.
3. Diagram 1 shows the molecular formula
of hydrocarbon P and hydrocarbon Q.

C H C H
6 12 6 14
P Q
Diagram 1
Which of the following statements
is true about hydrocarbon P and Diagram 2
hydrocarbon Q?
What is the substance used in the
Hydrocarbon Hydrocarbon device?
P Q A Bromine water
A Soluble in Insoluble in B Potassium chloride solution
water water C Acidified potassium manganate(VII)
solution
B Reacts with Does not react
Form 5
bromine water with bromine 7. Diagram 3 shows the structural formula
water of ester in banana.
H H H
C Produces little Produces a lot & & & O
soot when it of soot when it H!C!C!C!C ' H H
& &
burns burns & & & & O!C!C!H
H H H & &
D Does not react Reacts with H H
with acidified acidified
potassium potassium
manganate manganate
(VII) solution (VII) solution Diagram 3

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02.5 RANGER SPM CHEMISTRY 2P.indd 166 29/03/2022 2:28 PM