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 16 of 20)

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106 Which type of isomerism is displayed by compounds having same structural formula but different position of atoms on both sides of carbon bond?
Correct Answer: C
Explanation: Geometric isomerism occurs when atoms or groups are arranged differently around a double bond or ring structure.
107 Homocyclic organic compounds are sub divided into two types namely:
Correct Answer: A
Explanation: Homocyclic compounds are divided into alicyclic (non-aromatic) and aromatic (containing conjugated double bonds) types.
108 Which of the following is an example of substituent group which release electrons to benzene ring:
Correct Answer: C
Explanation: The amino group (−NH₂) is electron-donating due to the lone pair on nitrogen, which it can donate to the benzene ring.
109 Which one of the following represents nitration of benzene correctly?
Correct Answer: B
Explanation: Nitration of benzene requires a mixture of nitric acid (HNO₃) and sulfuric acid (H₂SO₄) as the nitrating agent.
110 In Friedel Craft acylation an acyl group is introduced in benzene ring in the presence of catalyst:
Correct Answer: A
Explanation: Friedel-Crafts acylation uses aluminum chloride (AlCl₃) as a catalyst to introduce an acyl group into the benzene ring.
111 Identify correct ascending order of reactivity of alkyl halides:
Correct Answer: B
Explanation: The reactivity of alkyl halides increases down the halogen group: F < Cl < Br < I due to decreasing bond strength.
112 Identify the correct statement related to substitution and elimination of alkyl halides:
Correct Answer: B
Explanation: The leaving group's role is similar in both substitution and elimination reactions, as it must depart in both mechanisms.
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