B.sc 1st Year Chemistry Subsidiary Important Questions 2024

In this post, b.sc 1st year chemistry subsidiary important questions are being given for the 2024 session. 

Try to write correct answers to these questions. 

The correct answer will be a great chemistry note for you. 

These questions are the b.sc 1st year chemistry subsidiary paper 1st important questions for those students who could not be appeared or failed in the main examination.

The most important thing is that you try to write the answers to these in your own words. 

Generally, it is seen that the questions asked in the previous exam are asked again in the upcoming exam. 

Therefore, to prepare these questions, b sc part 1 chemistry subsidiary question paper previous year has been made the basis. 

Many of these questions have been asked in previous exams and may be possible questions for the upcoming exams. 

That's why you should be careful while writing their answers. 

First of all, write b.sc first year chemistry important questions in your notebook. 

After that, read the chapter related to the textbook recommended by your university 2 to 3 times carefully. 

If you have more difficulty understanding any term, then contact your teacher and understand them. 

Then write their answers in your own words.

In this way, you will be able to remember the answers to important questions for bsc first year chemistry easily and for a long time. 

Consider these important questions as practice sets. 

If you want more practice sets then you can use the Internet. 

Many such sets are available on the internet, you can search b.sc 1st year chemistry subsidiary important questions pdf. 

Given here are subsidiary question examples, which tell what the pattern of the question can be.

Let's Start.


Bsc Chemistry Subsidiary Question Paper

B.sc First Year Chemistry Important Questions 

  • What is Gibb's free energy?
  • Describe the general methods of preparation of acid anhydrides. Give its important reaction and uses.
  • Explain any two reaction mechanisms - (a) Friedel craft Reaction (b) Perkin Reaction (c) Cannizaro Reaction.
  • Distinguish between the order of reaction and molecularity? Derive the expression of 2nd order of reaction. 
  • Explain the mechanism of electrophilic substitution reaction with electrophiles of - (a) cl2 (b) HNO3
  • State and explain the Second Law of thermodynamics.
  • What is Gibb’s free energy? How is it related to entropy? 
  • Explain the optical isomerism of lactic acid and tartaric acid. How lactic acid reacts with - (a) CH3OH (b) Pcl5 (c) HI (d) I2.
  • Explain the open chain and ring chain structure of D-glucose. 
  • Explain the application of the phase rule in a water system with a neat phase diagram?
  • What is Sigma and Pai bond? Distinguish between them?
  • Explain the open chain and ring chain structure of fructose.
  • What is the Bohr-Summerfield model of the Atom? What is its limitation?
  • Explain the following- (a) Degree of freedom in the phase rule (b) Concentration cell.
  • Explain the reaction mechanism of nitration and halogenation is Benzene.
  • Write notes on the following - (a) Ionisation Energy (b) Electron Affinity (c) Electronegativity.
  • What is protein? Describe the composition uses of Fibrous and Globular proteins.
  • Write notes on any Two reactions with mechanism - (a) Perkin Reaction (b) Sand Meyer Reaction (c) Friedel Craft Reaction.
  • What is Hybridization?
  • Write notes on - (a) Peptides and their classification (b) Addition reaction (c) Rosenmund’s reduction (d) Substitution reaction (e) Elimination reaction. 
  • How is oxalic acid obtained? How does it react with the following - (a) Glycerol (b) Pcl5 (c) KMno4 in an acid medium. 
  • Write down the important Biological functions of Nucleic acid.
  • Explain the following terms - (a) Element of Symmetry (b) Energy of Activation.
  • Draw the shape of all five d-orbitals?
  • Explain the terms (a) Components (b) Phases (c) degree of freedom.
  • What is Kohlarausch’s Law? How this law is applied to determine (a) the equivalent conductant of a weak electrolyte in finite dilution and (b) the Solubility product of a sparingly soluble electrolyte.
  • What are noble gases? Why they are called inert gases? Explain the position of noble gases in the periodic table? How they are isolated from atmospheric air?
  • Deduce an expression for work done in ideal gas (a) in a reversible isothermal process and (b) in an adiabatic reversible process.
  • Write down the important ores of Boron? How Boron is extracted from its ores? Describe the diagonal relationship between B and Si?
  • Explain the water system on the basis of the phase rule.
  • Explain the following- (a) the pH of the solution (b) Bronsted and Lewis's concept of Acid and Base? (c) Buffer soln. 
  • What is the chief source of citric acid? How is it obtained in a pure state? Establish the structure of citric acid.
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