Organic Basics — Set 2
Chemistry · कार्बनिक रसायन · Questions 11–20 of 50
What is the common name of the aromatic hydrocarbon Benzene's simplest derivative with a methyl group?
Correct Answer: D. Toluene
• **Toluene** = Toluene consists of a benzene ring where one hydrogen is replaced by a methyl group. • (Contextual detail from explanation) • 💡 Wrong-option analysis: A: Phenol; B: Xylene; C: Aniline
Which type of isomerism occurs due to the difference in the arrangement of atoms in space?
Correct Answer: A. Stereoisomerism
• **Stereoisomerism** = Stereoisomerism involves molecules with the same formula but different spatial orientations. • (Contextual detail from explanation) • 💡 Wrong-option analysis: B: Functional isomerism; C: Position isomerism; D: Chain isomerism
Which alcohol is known as 'Wood Spirit'?
Correct Answer: C. Methanol
• **Methanol** = Methanol was traditionally obtained by the destructive distillation of wood. • (Contextual detail from explanation) • 💡 Wrong-option analysis: A: Ethanol; B: Propanol; D: Butanol
What is the primary constituent of Liquefied Petroleum Gas (LPG) used in homes?
Correct Answer: B. Butane
• **Butane** = Butane is the main component of LPG, often mixed with some propane. • (Contextual detail from explanation) • 💡 Wrong-option analysis: A: Ethane; C: Ethyne; D: Methane
Which organic compound is used as a standard for determining the 'Octane Number' of fuels?
Correct Answer: A. iso-Octane
• **iso-Octane** = Iso-octane is assigned an octane rating of 100 because it burns smoothly in engines. • (Contextual detail from explanation) • 💡 Wrong-option analysis: B: Benzene; C: n-Heptane; D: Methane
The process of heating coal in the absence of air to obtain coal tar and coke is?
Correct Answer: C. Destructive distillation
• **Destructive distillation** = Destructive distillation involves the chemical decomposition of organic matter by heat. • (Contextual detail from explanation) • 💡 Wrong-option analysis: A: Fractional distillation; B: Vacuum distillation; D: Steam distillation
Which of the following is a natural polymer?
Correct Answer: C. Cellulose
• **Cellulose** = Cellulose is a complex carbohydrate that forms the structural component of plant cell walls. • (Contextual detail from explanation) • 💡 Wrong-option analysis: A: PVC; B: Nylon; D: Teflon
What is the functional group present in Ketones?
Correct Answer: C. -CO-
• **-CO-** = Ketones contain a carbonyl group (-CO-) bonded to two carbon atoms. • (Contextual detail from explanation) • 💡 Wrong-option analysis: A: -OH; B: -OR; D: -CHO
Which compound is known as 'Oil of Wintergreen'?
Correct Answer: D. Methyl salicylate
• **Methyl salicylate** = Methyl salicylate is an ester naturally produced by many species of plants. • (Contextual detail from explanation) • 💡 Wrong-option analysis: A: Ethyl acetate; B: Benzaldehyde; C: Phenyl acetate
Which gas is released during the fermentation of sugar by yeast?
Correct Answer: B. Carbon dioxide
• **Carbon dioxide** = Yeast breaks down sugar into ethanol and carbon dioxide during fermentation. • (Contextual detail from explanation) • 💡 Wrong-option analysis: A: Hydrogen; C: Oxygen; D: Nitrogen