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Alkene
Quiz 1
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Q.1
Which of the following is unsaturated hydrocarbon ?
propane
propene
propanol
propanoic acid
Q.2
Which of the following is a saturated hydrocarbon?
ethene
heptane
propyne
methanol
Q.3
What is the empirical formula of 4-hydroxypent-2-ene?
C5H12O
C5H10O
CH2O
C5H9OH
Q.4
Which molecule is not produced when ethane reacts with bromine in the presence of ultraviolet light?
C2H4Br2
HBr
H2
C4H10
Q.5
Which correctly represents an incomplete combustion of pentane?
C5H12 + 8O2 ⟶ 5CO2 + 6H2O
C5H12 + 8O2 ⟶ 4CO + CO2 + 6H2O
C5H12 + 6O2 ⟶ 4CO + CO2 + 6H2O
C5H12 + 5O2 ⟶ 4CO + CO2 + 4H2O + 2H2
Q.6
The first member of the alkene series is methene.
True
False
Q.7
General formula of Alkene is
CnH2n+2
CnH2n
CnH2n+1OH
CnH2n+1COOH
Q.8
What is the product of the Br2 addition to methycyclohexene?
1,2-dibromo-1-methylcyclohexene
1,2-dibromo-1-methylcyclohexane
Q.9
If an alkene hascarbon atoms, how many hydrogen atoms will it have?
20
22
40
42
Q.10
The "ane" ending in "alkane" tells someone that they are dealing with _________-bonded carbons.
single
double
triple
quadruple
Q.11
Cracking large hydrocarbons releases...
alkanes and alkenes
alkanes only
alkenes only
polymers only
Q.12
C10H--> C5H+ C3H6 + ?
C2H4
C3H4
CO2
CH4
Q.13
Complete the equation C16H---> __________ + C2H4
C16H34
C2H30
C10H20
C14H30
Q.14
What liquid detects the presence of an alkene?
Alkene water
Bromine water
Water
Limewater
Q.15
Cracking.....
Breaks larger hydrocarbons into smaller hydrocarbons
Separates hydrocarbons based on their length
Detects alkenes
Q.16
Carboxylic acid + ? --> ester
water
alkene
alcohol
alkane
Q.17
Alcohol + ? --> carboxylic acid
hydrogen
oxygen (oxidising agent)
water
carbon dioixde
Q.18
Alkene + ? --> alcohol
hydrogen
oxygen
water
carbon dioixde
Q.19
What catalyst is used in making esters?
sodium hydroxide
iron
sulfuric acid
lithium oxide
Q.20
The boiling points and viscosity of alkane molecules increase as their molecular sizes increase.
True
False
0 h : 0 m : 1 s
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