Organic Chemistry - Some Basic Principles and Techniques

The principle of IUPAC nomenclature is based on:

1. Random naming
2. Common names only
3. Systematic naming rules
4. Physical properties

The functional group of carboxylic acids is:

1. -OH
2. -COOH
3. -CHO
4. -CO-

The number of carbon atoms present in ethane is:

1. 1
2. 2
3. 3
4. 4

The reaction in which a hydrogen atom is replaced by a halogen atom is called:

1. Addition reaction
2. Substitution reaction
3. Elimination reaction
4. Oxidation reaction

The simplest aromatic hydrocarbon is:

1. Methane
2. Benzene
3. Ethene
4. Ethyne

The separation technique based on adsorption is:

1. Filtration
2. Chromatography
3. Distillation
4. Evaporation

The purification technique used for solids based on solubility differences is:

1. Distillation
2. Crystallisation
3. Chromatography
4. Sublimation only

The IUPAC name of CH4 is:

1. Methane
2. Ethane
3. Methene
4. Methyl

The hybridisation of carbon in methane is:

1. sp
2. sp2
3. sp3
4. dsp2

Compounds having the same molecular formula but different structures are called:

1. Homologues
2. Isomers
3. Isotopes
4. Polymers

The functional group present in alcohols is:

1. -CHO
2. -COOH
3. -OH
4. -NH2

The process of converting crude oil into different useful products is called:

1. Distillation
2. Fractional distillation
3. Sublimation
4. Filtration

The general formula of alkanes is:

1. CnH2n
2. CnH2n+2
3. CnH2n-2
4. CnHn

The ability of carbon atoms to form chains with other carbon atoms is called:

1. Isomerism
2. Catenation
3. Hybridisation
4. Resonance

Organic chemistry is the study of compounds containing:

1. Oxygen only
2. Carbon only
3. Carbon and its compounds
4. Metals and minerals