Which of the following statements is/are true? A. In column chromatography, the more highly absorbed component is eluted with less polar solvents. B. Benzoic acid can be extracted from water using ethanol. C. Number of replaceable hydroxyl ions present in one molecule of a base is called its acidity.

Assertion: The compound C₆H₅CH=CHCl is called β-chlorostyrene. Reason: In organic halides, the carbon atom attached to the halogen atom designated as α.

Assertion: The CH₂F₂, the F-C-F bond angle is less than 109.5˚ indicating less than 25% s-character but the H-C-H bond angle is larger and the C-H bond has more s-character. Reason: More electronegative substituents prefer hybrid orbitals having less s-character and more electropositive substituents prefer hybrid orbitals having more s-character.

Which of the following statements is/are correct? A. 1-chloro-2, 3-pentadiene has no chiral carbon atoms, yet it is a chiral molecule. B. A newly discovered compound is through to be chiral but shows no rotation in a specific solvent. Does this mean that the compound is assuredly achiral? C. When a chiral molecule reacts to give a chiral molecule, the product is always racemic.

Assertion: Cyclohexane floats over water. Reason: Most of the molecules of cyclohexane assume boat conformation.

Which of the following statements is/are wrong? A. 1-methoxypropane and 2-methoxyprpane are metamers. B. An optically inactive substance must be achiral. C. m-Chlorobromobenzene and m-bromochlorobenzene are isomers.

Assertion: 1, 2-propadiene exhibits optical isomerism. Reason: Its mirror image is non-superimposable.

Assertion: All the carbon atoms in but-2-ene lie in one plane. Reason: All the carbon atoms of but-2-ene are sp²-hybridized.

Assertion: The energy difference between staggered and eclipsed conformations of ethylene dichloride is less than in ethylene dibromide. Reason: The bond moment of C-Cl is greater than that of C-Br.

Which of the following statements is/are true? A. The dihedral angle between the H-atom is staggered conformation of ethane is 60˚. B. C₂H₅O₂N shows functional isomerism as well as tautomerism. C. Cyclopropane is better fuel than propane.

Assertion: Stereoisomerisms which are not mirror images of each other are called diastereomers. Reason: Diastereomers may or may not be optically active.

Assertion: CHBr=CHCl exhibits geometrical isomerism but CH₂Br-CH₂Cl does not. Reason: Presence of C=C is one of the conditions of geometrical isomerism.

Assertion: Benzaldehyde forms two oximes on reacting with NH₂OH. Reason: The two oximes arise due to geometrical isomerism around C=N bond.

Which of the following statements is/are false? A. Compounds containing one chiral carbon atom are always optically active. B. Maleic and fumeric acids are geometrical isomerism. C. Maleic acid is less soluble in water than fumeric acid.

Assertion: Propionic acid contains a prochiral carbon. Reason: Replacement of hydrogen atom of the CH₂ group by Br-atom produces a chiral carbon.