Buat kuiz
masalah 1
pilihan
Which reagent is used to convert a primary alcohol to an aldehyde?
- KMnO₄/H⁺
- PCC (Pyridinium chlorochromate) / CH₂Cl₂
- i) LiAlH₄ ii)H₂O
- NaBH₄ in methanol
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Ikut Turutan
Universiti
Kimia
GEAR UP! - PART 2
syafiqah surad
1
1
Allow incorrect answer
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public kuiz
masalah 2
pilihan
Which test distinguishes aldehydes from ketones by forming a silver mirror?
- 2,4-DNPH test
- Tollens’ reagent
- Fehling’s solution
- Iodoform test
masalah 3
pilihan
The iodoform test is positive for compounds containing:
- Any carbonyl group
- A methyl group adjacent to a carbonyl group
- An aromatic ring
- A hydroxyl group
masalah 4
pilihan
Grignard reagents react with aldehydes to form:
- Primary alcohols
- Secondary alcohols
- Tertiary alcohols
- Carboxylic acids
masalah 5
pilihan
Carboxylic acids can be prepared by the oxidation of:
- Primary alcohols
- Secondary alcohols
- Tertiary alcohols
- All of the above
masalah 6
pilihan
The reaction of a carboxylic acid with an alcohol in the presence of H₂SO₄ produces:
- An ester
- An amide
- An anhydride
- A nitrile
masalah 7
pilihan
Which test distinguishes primary, secondary, and tertiary amines using benzenesulphonyl chloride?
- Tollens’ test
- Hinsberg’s test
- Fehling’s test
- Iodoform test
masalah 8
pilihan
Primary aliphatic amines react with nitrous acid to produce:
- Stable diazonium salts
- Nitrogen gas and a mixture of products
- Yellow oils
- Green precipitates
masalah 9
pilihan
Aniline reacts with bromine water to form:
- A silver mirror
- A white precipitate
- A red dye
- No observable change
masalah 10
pilihan
Amino acids react with NaOH to form:
- A carboxylate salt
- An ester
- A diazonium salt
- An amide
masalah 11
pilihan
The peptide bond is formed by:
- Oxidation of amino acids
- Condensation (elimination of H2O)
- Reduction of carboxyl groups
- Hydrolysis of esters
masalah 12
pilihan
At pH < pI, an amino acid exists predominantly as:
- Zwitterion
- Anion (COO−)
- Cation (NH3+)
- Neutral molecule
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