NEET UG CHEMISTRY Multiple Choice Questions (MCQs)
NEET UG Organic Chemistry Questions (Serial 206-220)
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Which of the following is the correct IUPAC name for CH₃-CH₂-CH₂-CH₂OH?
- a) Butanol
- b) Butan-2-ol
- c) Butan-1-ol
- d) Propan-2-ol
Answer: c) Butan-1-ol
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Which of the following is a characteristic feature of the homologous series?
- a) Same chemical properties
- b) Same functional group
- c) Different molecular weights
- d) All of the above
Answer: d) All of the above
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Which of the following compounds shows geometrical isomerism?
- a) Propane
- b) 2-butene
- c) 1-butene
- d) Methane
Answer: b) 2-butene
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The electronic configuration of carbon is:
- a) 1s² 2s² 2p²
- b) 1s² 2s² 2p⁶
- c) 1s² 2s² 3p²
- d) 1s² 2s² 3p³
Answer: a) 1s² 2s² 2p²
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What type of bond formation occurs in the reaction between carbon atoms to form a covalent bond?
- a) Ionic bond
- b) Covalent bond
- c) Hydrogen bond
- d) Metallic bond
Answer: b) Covalent bond
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Which of the following compounds does not exhibit optical isomerism?
- a) Lactic acid
- b) 2-butanol
- c) 1-bromo-2-chloroethane
- d) Glucose
Answer: c) 1-bromo-2-chloroethane
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Which of the following is a primary alcohol?
- a) Methanol
- b) Ethanol
- c) Propan-2-ol
- d) Butan-2-ol
Answer: b) Ethanol
-
In the reaction of alkenes with hydrogen halides, Markovnikov's rule predicts the formation of the major product as:
- a) The one with the least substituted carbon
- b) The one with the most substituted carbon
- c) Both products are formed in equal amounts
- d) No reaction occurs
Answer: b) The one with the most substituted carbon
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Which of the following compounds is an example of a functional group isomer?
- a) Butane and 2-methylpropane
- b) Ethanol and dimethyl ether
- c) Methane and ethane
- d) Cyclohexane and hexene
Answer: b) Ethanol and dimethyl ether
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What type of isomerism is shown by 1,2-dibromocyclohexane?
- a) Chain isomerism
- b) Position isomerism
- c) Functional group isomerism
- d) Geometrical isomerism
Answer: d) Geometrical isomerism
-
Which of the following is a characteristic of a free radical?
- a) Has a full octet
- b) Is stable and non-reactive
- c) Has an unpaired electron
- d) Has a positive charge
Answer: c) Has an unpaired electron
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What is the main product when propene reacts with bromine (Br₂)?
- a) 1-bromo-2-propane
- b) 2-bromo-1-propane
- c) 1,2-dibromopropane
- d) 1-bromopropane
Answer: c) 1,2-dibromopropane
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Which of the following compounds undergoes an electrophilic addition reaction?
- a) Methane
- b) Ethene
- c) Methanol
- d) Cyclohexane
Answer: b) Ethene
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Which type of hybridization is found in methane (CH₄)?
- a) sp
- b) sp²
- c) sp³
- d) dsp³
Answer: c) sp³
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What is the functional group of an aldehyde?
- a) -COOH
- b) -CHO
- c) -OH
- d) -C=O
Answer: b) -CHO
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