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Quiz 7
Mdcat-past-papers - NMDCAT - Chemistry Quiz
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Board: NMDCAT | Subject: Chemistry |
121. Phenol has following characteristics and physical properties:
Colorless crystalline solid
Colorless crystalline deliquescent solid
Colorless amorphous solid
Colorless amorphous deliquescent solid
122. Bakelite is formed upon polymerization of:
Phenol and formaldehyde
Ethanol and formaldehyde
Methanol and formaldehyde
Phenol and acetaldehyde
123. IUPAC name of C₆H₁₀O(CH₃)₂ is:
2-Methyl-3-hexanone
2,6-Dimethylcyclohexanone
3-Methylcyclohexanone
4-Methyl-3-hexanone
124. General formula of aldehyde is:
RCOOH
RCOR
RCOH
ROR
125. Ketones can be prepared by the oxidation of:
Primary alcohol
Secondary alcohol
Tertiary alcohol
Propanoic acid
126. Composition of formalin is:
Formaldehyde, Acetaldehyde & Water
Acetaldehyde and Ethanol
Acetaldehyde, Methanol and Water
Formaldehyde, Methyl Alcohol and Water
127. Addition of HCN to carbonyl compounds causes the change in hybridization from --- to ---
sp → sp³
sp³ → sp²
sp² → sp³
sp² → sp
128. Ketones do not give ----- reactions.
Addition of NaHSO₃
Reduction by Fehling's solution
Formation of oxime
Reaction with hydrazine
129. Sodium nitroprusside test is shown by:
Aldehydes
Ketones
Both can give this test
Cannot be shown by both
130. Ketones undergo reduction to form:
Primary alcohol
Secondary alcohol
Tertiary alcohol
Both b & c
131. Which one is not the use of acetaldehyde?
Making phenolic resins
Silvering of mirrors
Throat lozenges
Hypnotic drugs
132. In Cannizzaro's reaction, alcohol is a ------ product.
Oxidized
Reduced
Does not produce at all
Alcohol is reactant of this reaction
133. Grignard reagent on reaction with CO₂ forms:
Carboxylic acid
Alkane
Alcohol
Glycerol
134. Saturated monocarboxylic acids are also called:
Neutral lipids
Alcohol
Fatty acids
Glycerol
135. The correct reactivity order for carboxylic acid derivatives is:
Anhydride > Acyl chloride > Ester
Acyl chloride > Anhydride > Amide
Amide > Acyl chloride > Ester
Acyl chloride > Anhydride > Ester
136. Number of carbon atoms in oxaloacetic acid:
3
4
5
6
137. Flavour of benzyl acetate is:
Banana
Raspberry
Jasmine
Orange
138. Carboxylic acids involve in formation of:
Esters
Alcohols
Acid amide
All can be formed from it
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