Hydrocarbons
How does iodine react?
explosively
slowly in dark but rapidly in strong sunlight
requires high temperature or strong sun light
essentially unreactive
essentially unreactive
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Vicinal dihalide eliminates two molecules of hydrogen halides from adjacent carbon atoms on treatment withA. Zn dust
B. calcium hydroxide
C. alcoholic potassium hydroxide
D. calcium chloride
The reaction in which one chlorine atom becomes attached with one carbon and the other one with other carbon atom is called
A. elimination reaction
B. substitution reaction
C. halogenation
D. addition reaction
What causes the red color of tomatoes?
A. lycopene
B. ethene
C. ethylene glycol
D. acetylene
Alkanes (saturated hydrocarbons) have a density
A. less than water
B. equal to water
C. more than water
D. more than mercury
Ethene, propene, and butene are
A. solids
B. liquids
C. gases
D. plasma
Tetrahydroxy ethane loses two water molecules to form
A. oxalic acid
B. Glyoxal
C. acetylene
D. ethylene glycol
What is the term used for the reaction of an alkane and a halogen?
A. substitution reaction
B. elimination reaction
C. Dehydrohalogenation
D. hydrogenation
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