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Quiz 212
Mdcat-past-papers Quiz
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4221. Phenol has following characteristics and physical properties:
Colorless crystalline solid
Colorless crystalline deliquescent solid
Colorless amorphous solid
Colorless amorphous deliquescent solid
4222. Bakelite is formed upon polymerization of:
Phenol and formaldehyde
Ethanol and formaldehyde
Methanol and formaldehyde
Phenol and acetaldehyde
4223. Which one of the following compounds is a ketone?
CH₃-O-CH₂-CH₃
CH₃-CO-CH₂-CH₃
CH₃COCOOH
CH₃-CH₂-CHO
4224. When CH₃-CH₂-OH is oxidized in the presence of K₂Cr₂O₇ and H₂SO₄, the product formed is:
CH₃-COOH
H-COOH
CH₃-C-OCH₃
CH₃-C-OCH₃
4225. Both aldehydes and ketones are planar to the plane of carbonyl group. Which one of the following bonds is distorted towards the oxygen atom?
π bonds of C and O
Sigma bond of C and H
Sigma bond of C & O
Sigma bond of C and C
4226. Which one of the following is the IUPAC name of the HCHO?
Propionaldehyde
Methane
Acetaldehyde
Methanal
4227. Why is it necessary to distill aldehyde formed from oxidation of primary alcohol through acidified potassium dichromate(VI) solution or acidified sodium dichromate(VI) solution?
Aldehyde formed may be oxidised further to carboxylic acid concerned
Aldehyde formed is unstable and further decomposes back to original precursor, i.e. primary alcohol
Aldehyde may be oxidised further to a ketone
Aldehyde formed may react with primary alcohol, the original reactant
4228. Ketones can be made by oxidation of:
Secondary alcohols
Tertiary alcohols
Aldehydes
Primary alcohols
4229. Which of the following is the correct name of CH₃CH₂CH₂COCH₂CHO?
3-Oxo-hexanal
Hexanal
Butanal
Propanal
4230. Which is the most suitable reagent for the conversion of R-CH₂OH → RCHO?
KMnO₄/NaOH
K₂Cr₂O₇/H₂SO₄ (Conc.)
CrO₃
CrO₃/H₂SO₄ (Conc.)
4231. What is the IUPAC name of diisopropyl ketone?
1,3-Diisopropylpropane-2-one
2,4-Dimethylpentane-3-one
2,4-Dimethylpentane-2-one
1,3-Dimethylpropane-2-one
4232. C₆H₁₂O is the general formula of:
Ether
Carboxylic acid
Ketones
Carbolic acid
4233. Bakelite is polymer of:
Two glucose molecules
Formaldehyde & acetone
Two amino acid molecules
Formaldehyde & phenol
4234. Which one of the following on dry distillation produces acetone
Calcium Acetate
Calcium Formate
Ethyle Acetate
Acetic Acid
4235. IUPAC name of C₆H₁₀O(CH₃)₂ is:
2-Methyl-3-hexanone
2,6-Dimethylcyclohexanone
3-Methylcyclohexanone
4-Methyl-3-hexanone
4236. General formula of aldehyde is:
RCOOH
RCOR
RCOH
ROR
4237. Ketones can be prepared by the oxidation of:
Primary alcohol
Secondary alcohol
Tertiary alcohol
Propanoic acid
4238. Composition of formalin is:
Formaldehyde, Acetaldehyde & Water
Acetaldehyde and Ethanol
Acetaldehyde, Methanol and Water
Formaldehyde, Methyl Alcohol and Water
4239. C₂H₂O is the general formula of:
Ether
Carboxylic acid
Ketones
Carbolic acid
4240. Identify the alkene which gives only one type of aldehyde upon ozonolysis:
1-Pentene
2-Methylpropene
2-Butene
2,3-Dimethyl-2-butene
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