UHS Mdcat 2024 Solved With Explanation | mosaicbro.com

UHS Mdcat 2024 Solved With Explanation

Past Mdcat Paper of UHS 2024 #Uhs #Mdcat #2024

7 of 137 questions (Page 17 of 20)

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113 Alkyl Halides involving -C-X bond breakage and -C-Nu bond formation simultaneously would follow which one of the following mechanisms
Correct Answer: B
Explanation: The Sₙ2 mechanism involves simultaneous bond breaking (C-X) and bond forming (C-Nu) in a single step.
114 CₙH₂ₙO is the general formula of:
Correct Answer: C
Explanation: The general formula CₙH₂ₙO applies to ketones and aldehydes, which are carbonyl compounds.
115 The blue color of Fehling solution is changed to red when warmed with an aldehyde due to formation of which of the following?
Correct Answer: B
Explanation: Fehling's solution turns from blue to red when aldehydes reduce Cu²⁺ to Cu⁺, forming a red precipitate of copper(I) oxide (Cu₂O).
116 Reaction of HCN with formaldehyde is a:
Correct Answer: A
Explanation: The reaction of HCN with formaldehyde is a nucleophilic addition where the cyanide ion (CN⁻) attacks the carbonyl carbon.
117 Which of the following alcohol can give iodoform reaction?
Correct Answer: D
Explanation: Ethanol (CH₃CH₂OH) can undergo the iodoform reaction because it has a methyl group adjacent to the hydroxyl group.
118 Common name of 2-hydroxy propanoic acid is:
Correct Answer: B
Explanation: 2-hydroxy propanoic acid is commonly known as lactic acid.
119 Which of the following is correct regarding phenol
Correct Answer: B
Explanation: Phenol is more acidic than water and ethanol but less acidic than carboxylic acids due to resonance stabilization of the phenoxide ion.
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