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WorksheetsUJIAN PENILAIAN SUMATIF 3 (DK024) - TRIAL
Total questions: 20
Worksheet time: 40mins
What is the name of the process where ethanol is prepared from glucose?
Oxidation
Reduction
Fermentation
Hydrolysis
The compound above is name as
2-phenyl-1-butanol
2-phenyl-2-butanol
2-ethyl-2-phenylethanol
3-phenyl-4-butanol
Which of the following statement is correct about 2-methyl-2-propanol?
2-methyl-2-propanol is a secondary alcohol
2-methyl-2-propanol can be oxidise to ketone
2-methyl-2-propanol reacts rapidly with Lucas' reagent at room temperature
2-methyl-2-propanol produce a pale yellow precipitate when treated with alkaline iodine solution
Arrange the following organic compounds in order of increasing boiling point.
IV < III < I < II
III < IV < I < II
III < II < IV < I
III < IV < II < I
The reagent that can be used to differentiate 1-propanol and 2-propanol is,
Excess Cl2 in aqueous NaOH solution
2,4-dinitrophenylhydrazine
A mixture of concentrated HCl with anhydrous ZnCl2
Silver diamine complex solution
Based on the above reaction scheme, determine the correct product(s) for the dehydration reaction of 3-methyl-3-pentanol.
Based on the observations recorded in the table above, predict the identity of alcohol A if it has a molecular formula of C4H10O.
1-propanol is completely soluble in water while propane can't. This is because ...........
1-propanol have a smaller hydrophobic region than propane
1-propanol can form Hydrogen bond with water molecules while propane can't
1-propanol can form van der Waals forces with water molecules while propane can't
1-propanol have larger hydrophobic region than propane
What is the best choice of reagent for the following conversion?
pyridinium chlorochromate (PCC) in CH2Cl2
Hot acidified sodium dichromate(VI), Na2Cr2O7
LiAlH4 followed by addition of H2O
Alkaline iodine solution
Which of the following is secondary alcohol?
I and II
I and III
II and III
I, II and III
Name the carbonyl compound above according to IUPAC nomenclature.
3,3-dimethyl-4-phenyl-2-butanone
4-phenyl-3,3-dimethyl-2-butanone
3-benzyl-3,3-methyl-2-butanone
1-phenyl-3,3-dimethyl-2-butanone
Which of the following molecular formula represent carbonyl compound?
C4H10O
C4H8O2
C4H8O
C4H8
Which of the following statements is INCORRECT?
Aldehyde and ketone undergo nucleophilic addition.
Aldehyde and ketone undergo nucleophilic substitution.
Aldehyde and ketone contain a polar carbonyl group.
Aldehyde and ketone will give yellow precipitate when reacted with Brady’s reagent.
An organic compound, A, has the following properties.
The structure of A is likely to be
CH3COCH3
C(CH3)3OH
C6H5CH(OH)CH3
C6H5CHO
Which of the following pair of compounds can be distinguished by using Tollens' reagent?
An organic compound, B, forms a yellow precipitate with alkaline iodine solution but does not react with alkaline silver diamine complex solution. Compound B maybe,
CH3CHO
CH3CH2CH2COCH3
CH3CH3COCH2CH3
A. CH3CH2CHO
Cyclopentanone is an important precursor for the synthesis of many fragrances such as cis-jasmone. It can be synthesised from cyclopentene through cyclopentanol as an intermediate.
What is reagent(s) I and II in the above reaction scheme.
I: H2O, dilute H2SO4 II: PCC in CH2Cl2
I: H2O, dilute H2SO4 II: Hot acidified Na2Cr2O7
I: H2O, concentrated H2SO4 II: Hot acidified Na2Cr2O7
I: H2O, concentrated H2SO4 II: NaBH4 in CH3OH
Which of the following will give an orange precipitate with 2,4-dinitrophenyhydrazine?
The product(s) formed between the reaction of propanal and Tollens' reagent include
(I) CH3CH2COO-
(II)Ag
(III) Ag2O
I only
I and II
II and III
I, II and III
Which of the following are true regarding cyclohexanone?
Cyclohexanone can be reduced to secondary alcohol by using lithium aluminium hydride, LiAlH4 followed by the addition of water.
Cyclohexanone can react with alkaline iodine solution to give a pale yellow precipitate.
Cyclohexanone is an example of aromatic ketone.
Cyclohexanone can react with ammoniacal silver nitrate solution to give a grey precipitate.
