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WorksheetsCHEMICAL TEST BY PST 5
Total questions: 23
Worksheet time: 12mins
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
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
Compound R, C5H8 is a cyclic hydrocarbon. It decolourised potassium permanganate and form brown precipitate when reacted with alkaline potassium permanganate in cold condition.
State the name of chemical test involved:
Oxidation
Iodoform test
Baeyer's test
Hinsberg test
Determine structure B.
Lucas test is used to ……………………..
Detect methyl carbinol group
Detect carbonyl compound
Detect hydroxyl group
Differentiate the three classes of alcohols
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
Iodoform test is used to …………………………………………
Differentiate the alkene from alkane
Detect the hydroxyl compound
Differentiate the three classes of alcohols
Detect methyl carbinol group
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
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
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
Compound S, C7H6O gives a orange precipitate with 2,4-dinitrophenylhydrazine.
State the name of chemical test involved:
Unsaturated Test
Lucas Test
Iodoform Test
Brady Test
GG reacts with an alkaline solution of benzenesulphonyl chloride to form a
precipitate, KK which does not dissolve on acidification. When HH is added to alkaline
solution of benzenesulphonyl chloride, two layers are form which dissolve upon acidification.
State the name of chemical test involved:
Nitrous acid test
Iodoform test
Baeyer's test
Hinsberg test
An alcohol X, C6H6O produced white precipitate when reated with bromine solution.
State the name of chemical test involved:
Lucas test
Iodoform test
Bromine water
Hinsberg test
Which of the following reagents can be used to differentiate between the two compounds?
Sodium
Acidified KMnO4
Bromine water
Ethanoyl chloride
Which compound gives a brick red precipitate when react with Cu2+ ion in basic medium?
What is the reagent for Tollens’ test?
2,4-DNPH
alkaline excess I2
Cu2+, OH-
[Ag(NH3)2]+ , OH-
What is the positive observation for Tollens’ test?
brick red precipitate
silver mirror precipitate
light yellow precipitate
yellow or orange precipitate
The test that can be used to distinguish following compounds is
Brady’s test
Hinsberg’s test
Iodoform test
Tollens’ test
Which compound release nitrogen gas when react with nitrous acid?
Nitrous Acid Test test gives yellow oil to
primary amine
secondary amine
tertiary amine
primary aliphatic amine
What is the positive observation when aniline reacts with bromine water?
reddish brown colour of bromine decolourised
reddish brown colour of bromine remain unchanged
white precipitate
purple complex
The table below shows the result obtained when amines reacted with benzenesulphonyl chloride. Which of the following is the observation of X and Y?
X= precipitate, Y= clear solution
X= precipitate, Y= precipitate
X= clear solution, Y= clear solution
X= clear solution, Y= precipitate
Give a suitable chemical test to differentiate between
butanal and 2-butanone
Lucas Test
Brady's Test
Hinsberg's Test
Tollen's Test
