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Worksheets*CHEMICAL TEST OF ORGANIC COMPOUNDS (SERIES 1)*
Total questions: 15
Worksheet time: 30mins
Which of the following alkanes can decolourise bromine when exposed to ultraviolet light?
I ethane
II 2-methylpropane
III cyclohexane
I and II only
I and III only
II and III only
I, II and III
Propene will react with bromine in dichloromethane to form 1,2-dibromopropane. Which of the following observation are correct?
Brown precipitate formed
Reddish brown colour decolourised
No observable change
Purple colour decolourised
Which of the following tests can be used to differentiate between the two compounds below?
Br2 in CH2Cl2
Br2 in the presence of ultraviolet light
Iron(III) chloride
Bromine water
Which of the following will be observed when ethylbenzene reacted with hot acidified KMnO4?
A white precipitate formed
Light yellow precipitate formed
Purple colour of KMnO4 remain unchanged
A gas is formed that turns lime water chalky
Which of the following reagents can be used to differentiate between the two compounds?
Sodium
Acidified KMnO4
Bromine water
Ethanoyl chloride
Which of the following compounds produces a purple colourisation when a few drops of iron(III) chloride are added to it?
cyclohexanol
benzoic acid
phenol
methanol
Iodoform test is used to …………………………………………
Differentiate the alkene from alkane
Detect the hydroxyl compound
Differentiate the three classes of alcohols
Detect methyl carbinol group
Give the observation when 2-methyl-1-propanol react with concentrated hydrochloric acid and anhydrous zinc chloride.
No cloudy solution formed after 10 minutes
Cloudy solution formed within 5 minutes
Cloudy solution formed after 10 minutes
Cloudy solution formed immediately
Baeyer’s test is used to differentiate butane and 2-butene. The reagents is;
Hot acidified KMnO4
Cold alkaline dilute KMnO4
Hot acidified K2Cr2O7
Bromine in dichloromethane
Which of the following alcohol will form light yellow precipitate when reacted with excess iodine in basic solution?
2-methyl-2-propanol
2-methyl-3-pentanol
3-methyl-2-pentanol
2-methylcyclobutanol
Propene will reacts with bromine in tetrachloromethane to produced product Y. Y is;
2-chloropropane
2-bromopropane
1-bromo-2-chloropropane
1,2-dibromopropane
Which of the following tests can be used to differentiate between the two compounds above?
Iodoform test
Baeyer’s test
Tollen's test
Brady’s test
Lucas test is used to ……………………..
Detect methyl carbinol group
Detect carbonyl compound
Detect hydroxyl group
Differentiate the three classes of alcohols
The suitable reagent to differentiate the three classes of alcohol is;
Hot acidified potassium permanganate
Concentrated hydrochloric acid and anhydrous zinc chloride
Alkaline excess iodine
2,4-dinitrophenylhydrazine
An organic P forms a yellow precipitate when reacted with alkaline iodine. What is P if P is liberates hydrogen gas when reacted with sodium metal?
1-propanol
2-butanol
Phenylmethanol
2-methyl-2-pentanol
