NEET UG CHEMISTRY Multiple Choice Questions (MCQs)

196. Which of the following is the correct hybridization of the carbon atom in methane (CH₄)?

• a) sp
• b) sp²
• c) sp³
• d) sp³d

197. Which of the following is an example of a homologous series?

• a) Ethylene and acetylene
• b) Methane and ethane
• c) Propane and butane
• d) Benzene and toluene

198. What is the shape of a molecule with an sp² hybridized central atom?

• a) Tetrahedral
• b) Linear
• c) Planar triangular
• d) Bent

199. Which of the following compounds contains a halogen functional group?

• a) Alcohol
• b) Ether
• c) Alkyl halide
• d) Aldehyde

200. Which of the following is true for structural isomers?

• a) They have the same molecular formula but differ in their physical properties.
• b) They have different molecular formulas but the same functional group.
• c) They differ in the arrangement of atoms and bonds.
• d) They are identical compounds.

201. Which of the following is the correct IUPAC name for CH₃CH₂OH?

• a) Methanol
• b) Ethanol
• c) Propanol
• d) Butanol

202. Which of the following best describes homolytic fission of a covalent bond?

• a) The bond breaks and both atoms acquire the same charge.
• b) The bond breaks and one atom acquires both electrons.
• c) The bond breaks and the electrons are equally shared between the two atoms.
• d) The bond breaks and one atom gains both electrons.

203. Which of the following is a characteristic of a carbocation?

• a) It is a positively charged species.
• b) It is a negatively charged species.
• c) It is a neutral species.
• d) It has a pair of electrons available for bonding.

204. Which of the following is a nucleophile?

• a) CH₃⁺
• b) H₂O
• c) Cl⁻
• d) Na⁺

205. What is the stability of a free radical determined by?

• a) The presence of a positive charge
• b) The presence of an odd number of electrons
• c) The ability to donate electrons
• d) The ability to accept electrons