Organic Chemistry – Some Basic Principles and Techniques

Which of the following organic compounds could not be dried by anhydrous CaCl₂?

• Ethanol

• Benzene

• Chloroform

• Ethyl acetate

[Cr(NH₃)₆][Cr(SCN)₆] and [Cr(NH₃)₂(SCN)₄] [Cr(NH₃)₄(SCN)₂] are the examples of what type of isomerism?

• Ionisation isomerism

• Linkage isomerism

• Coordination isomerism

• Solvate isomerism

Which among the following functional groups has been given the highest priority while assigning R-S configuration?

• -C₆H₅

• -CN

• -C₂H₅

• -CH₃

If 'n' represents total number of asymmetric carbon atoms in a compound then the possible number of optical isomers of the compound is 

• 2n

• 2ⁿ

• n²

• 2n+2

In assigning R-S configuration, which among the following groups has highest priority?

• -SO₃H

• -COOH

• -CHO

• -C₆H₅

Which of the following compounds has lowest boiling point?

• n-butyl alcohol

• lso-butyl alcohol

• Tert-butyl alcohol

• Sec-butyl alcohol

Lassaigne's test (with silver nitrate) is commonly used to detect halogens such as chlorine, bromine and iodine but not useful to detect fluorine because the product AgF formed is

• Volatile

• Reactive

• Explosive

• Soluble in water

Cycloheptatrienyl cation is

• Non-benzenoid and non-aromatic

• Non-benzenoid and aromatic

• Benzenoid and non-aromatic

• Benzenoid and aromatic

Which one of the following is a benzenoid aromatic compound?

• Furan

• Thiophene

• Pyridine

• Aniline

The major product obtained by the addition reaction of HBr to 4-methylpent-1-ene in the presence of peroxide is

• 1-bromo-4-methylpentane

• 4-bromo-2-methylpentane

• 2-bromo-4-methylpentane

• 3-bromo-2-methylpentane