10th Class Chemistry Guess

• Here are the detailed chemistry guess class 10 to help you prepare for your exams.
• Very Important Multiple Choice Questions of full book Chemistry in Urdu and English Medium class 10 from previous 20 years past papers of all Punjab Boards.
• Important Short and Long Questions of Chemistry in Urdu and English Medium class 10 from previous 20 years past papers of all Punjab Boards.
• Why at equilibrium state reaction does not stop?
• Why is equilibrium state attainable from either way?
• What is the difference between reactants and products? Give example.
• Write any two macroscopic characteristics of forward reactions.
• Write two possibilities of chemical equilibrium state.
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• How can you know that a reaction has achieved an equilibrium state?
• Describe any two macroscopic characteristics of dynamic equilibrium.
• Write any two general characteristics of organic compounds.
• What is meant by vital force theory?
• What is meant by aeromatic compounds? Give an example.
• What is the difference between aeromatic and alicyclic compounds?
• Describe the modern definition of organic chemistry.
• Write down the four types of formulas of organic compounds.
• What are alkyl radicals? Write general formula and give example.
• Which compounds are amines? Give two examples.
• Write the chemical formula and uses of ammonium hydroxide.
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• What is meant by conjugate acid and conjugate base? Explain with the help of an example.
• What is meant by amphoteric compounds? Explain that water is an amphoteric compound.
• Write two differences between acids and bases.
• What is the difference between Arrhenius base and Lowry Bronsted base?
• What is the percentage amount of nitrogen in urea? Write the formula of urea.
• What is refining of petroleum and how it is carried out?
• Give a use of kerosene oil.
• Describe the difference between diesel oil and fuel oil.
• What is the difference between crude oil and residual oil?
• What is the principle of fractional distillation?
• Write the macroscopic characteristics of forward and reverse reactions. What is the difference between forward and reverse reaction?
• State the law of Mass action and derive the expression for equilibrium constant for a general reaction.
• Define an acid and a base according to Bronsted-Lowery concept and justify with examples that water is an amphoteric compound.
• Describe the sources, uses and deficiency symptoms of water-soluble vitamins.
• Write the detail of commercial importance and uses of enzymes.
• Explain different methods of the preparation of alkynes.
• What are fertilizers? What is the difference between natural and artificial fertilizer? Also explain that natural fertilizer is better than artificial fertilizer.
• Which petroleum fraction is not used in dry cleaning?
• Write down two uses of petroleum gas.
• Write down two uses of fuel oil.
• Explain the Lewis concept of acids and bases.
• Make a comparison between the properties of acids and bases.
• Describe Arrhenius concept of acids and bases and explain with examples. Also write the limitations of this concept.
• What is meant by conjugate acid and conjugate base? Explain with examples. Write the limitation of Lowry-Bronsted concept.
• What is meant by neutralization reaction? Explain with the help of examples.
• Define a salt and give the characteristic properties of salts.
• What are oligosaccharides? How they are classified? Also write their properties.
• Explain the sources and uses of proteins.
• Explain the sources and uses of lipids.
• Describe the sources, uses and deficiency symptoms of water-soluble vitamins.
• Write the detail of commercial importance and uses of enzymes.
• Write the properties and composition of water.
• How polarity of water molecule plays its role to dissolve the substances?
• Explain the methods of removing permanent hardness.
• What is meant by water softening? Explain the methods of removing temporary water hardness.
• Write the advantages of Solvay’s process.