Latest Bio-Chemistry Interview Question and Answers for pdf free download
1. Give the example for electrophilic substitution reaction?
The species, which accepts the electrons, are called Electrophilles (or) Electrophilic reagents.
When the atom (or) group of atoms present in the organic compound is replaced by another atom (or) group of atoms (electrophilic) is called electrophilic substitution reaction.
2. What is addition reaction?
When atoms (or) group of atoms are added, to form more saturated compound it is called addition reaction.
3. How do you define free radical addition reaction? Give an example.
When unsaturated compounds undergo addition reactions with free radicals,
it is called free radical addition reaction.
Ex; CH3-CH = CH2+HBr-----------> CH3-CH2-CH2Br
4. What is nucleophilic addition reaction?
When the attacking species during the addition reaction is Nucleophilic, it is nucleophilic addition reaction. Ex; Acetaldehyde cynohydrin
5. What is electrophilic addition reaction?
When the attacking species during the addition reaction is Electrophile, it is called electrophilic addition reaction. Ex; (+) (-) (+) (-) (+) (-)
CH2Br-CH2BràH2C-CH2+BrBr-àH2C=CH2+Br2-
6. What are the favorable conditions for formation of cat ions?
1. Low Ionisational potential
2. Lesser Charge
3. More atomic size of atoms forms cations easily
4. Ions having Inert gases configuration formed easily
7. What are the favorable conditions for formation of Anions?
• High Electron affinity
• Small size
Less charge of an atoms form anion more easily
8. Define lattice energy.
The energy released when one mole of ionic crystal is formed by the combination of the corresponding gaseous (+ve) and (-ve) ions brought from infinite distance is called lattice energy.
9. What happens if Lattice energy increases?
• The Strength of ionic bond
• Stability of the Ionic compound
• Ease of formation of the Ionic bond Increases
10. What is Sublimation energy?
The amount of energy required to convert one mole of solid substance to vapor state is called Sublimation energy
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1. Give the example for electrophilic substitution reaction?
The species, which accepts the electrons, are called Electrophilles (or) Electrophilic reagents.
When the atom (or) group of atoms present in the organic compound is replaced by another atom (or) group of atoms (electrophilic) is called electrophilic substitution reaction.
2. What is addition reaction?
When atoms (or) group of atoms are added, to form more saturated compound it is called addition reaction.
3. How do you define free radical addition reaction? Give an example.
When unsaturated compounds undergo addition reactions with free radicals,
it is called free radical addition reaction.
Ex; CH3-CH = CH2+HBr-----------> CH3-CH2-CH2Br
4. What is nucleophilic addition reaction?
When the attacking species during the addition reaction is Nucleophilic, it is nucleophilic addition reaction. Ex; Acetaldehyde cynohydrin
5. What is electrophilic addition reaction?
When the attacking species during the addition reaction is Electrophile, it is called electrophilic addition reaction. Ex; (+) (-) (+) (-) (+) (-)
CH2Br-CH2BràH2C-CH2+BrBr-àH2C=CH2+Br2-
6. What are the favorable conditions for formation of cat ions?
1. Low Ionisational potential
2. Lesser Charge
3. More atomic size of atoms forms cations easily
4. Ions having Inert gases configuration formed easily
7. What are the favorable conditions for formation of Anions?
• High Electron affinity
• Small size
Less charge of an atoms form anion more easily
8. Define lattice energy.
The energy released when one mole of ionic crystal is formed by the combination of the corresponding gaseous (+ve) and (-ve) ions brought from infinite distance is called lattice energy.
9. What happens if Lattice energy increases?
• The Strength of ionic bond
• Stability of the Ionic compound
• Ease of formation of the Ionic bond Increases
10. What is Sublimation energy?
The amount of energy required to convert one mole of solid substance to vapor state is called Sublimation energy
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