1. Which of the following is the functional group for alcohols?
Answer:
Explanation:
The functional group for alcohols is hydroxyl (-OH).
2. Which of the following organic compounds has a triple bond?
Answer:
Explanation:
Alkynes contain a carbon-carbon triple bond.
3. The IUPAC name of CH3-CH2-OH is:
Answer:
Explanation:
According to IUPAC nomenclature, the compound is named as Ethanol.
4. Which process is used to separate a mixture of two miscible liquids?
Answer:
Explanation:
Distillation is used to separate miscible liquids based on their boiling points.
5. The hybridization of carbon in methane is:
Answer:
Explanation:
In methane (CH4), carbon undergoes sp3 hybridization.
6. Which among the following is an unsaturated hydrocarbon?
Answer:
Explanation:
Ethene has a double bond and is thus an unsaturated hydrocarbon.
7. The general formula for alkanes is:
Answer:
Explanation:
Alkanes follow the general formula CnH2n+2.
8. The organic reaction in which two molecules combine to form a larger molecule with the elimination of a smaller molecule is:
Answer:
Explanation:
In condensation, two molecules combine and a smaller molecule, often water, is eliminated.
9. The primary structure of an organic compound represents:
Answer:
Explanation:
The primary structure depicts the sequence in which carbon atoms are arranged in a molecule.
10. Which isomerism is shown by compounds having the same molecular formula but different structures?
Answer:
Explanation:
Structural isomers have the same molecular formula but different structural formulas.
11. The process of converting alkanes to alkenes involves:
Answer:
Explanation:
Removing hydrogen from alkanes results in alkenes, which is termed dehydrogenation.
12. Which organic compound is also known as wood spirit?
Answer:
Explanation:
Methanol is commonly referred to as wood spirit.
13. An aromatic compound contains:
Answer:
Explanation:
Aromatic compounds have a ring with alternating single and double bonds.
14. The study of interaction between matter and electromagnetic radiation is termed as:
Answer:
Explanation:
Spectroscopy studies the interaction of electromagnetic radiation with matter.
15. Which reagent is used to test the presence of a double bond in a compound?
Answer:
Explanation:
Bromine water adds across double bonds, leading to its decolorization.
16. A functional group present in aldehydes is:
Answer:
Explanation:
Aldehydes have a carbonyl group (-CHO) as their functional group.
17. The purification technique based on the difference in the rate of migration of components is:
Answer:
Explanation:
Chromatography separates components based on their rate of migration.
18. Organic compounds generally have:
Answer:
Explanation:
Due to weaker van der Waals forces, organic compounds typically have low melting and boiling points.
19. The removal of a molecule of water from an alcohol results in:
Answer:
Explanation:
Dehydration of an alcohol generally produces an alkene.
20. Which among the following represents the secondary suffix in IUPAC nomenclature?
Answer:
Explanation:
The secondary suffix indicates the main functional group. In this case, '-ol' indicates an alcohol.