Tuesday , 12 December 2017

Chemistry guess papers 2016 for 9th class

9th class chemistry guess papers 2016

You have a piece of coal (carbon) weighing 9.0 grams. Calculate the number of moles of coal in the given mass.

Important Short Questions of 9th Class for Chemistry 2015 

9th class guess-papers of coumputer 2016, Guess papers, coumputer guess papers

  • You have a piece of coal (carbon) weighing 9.0 grams. Calculate the number of moles of coal in the given mass.
  • Write down the important chemical reactions of halogens.
  • Write a short note on Allotropy.3
  • Write a chemical formula?
  • When we dissolve 20 g of NaC1 in1 400 cm3 of solution, what will be its molarity?
  • What is vapor pressure and how it is affected by intermolecular forces?
  • What is the relationship between electro positively and ionization energy?
  • What is the difference molecule and molecular ion?
  • What is molarity and give its formula to prepare molar solution?
  • What is metallic bond? Explain the metallic bonding with the help of a diagram.
  • What is isotope? Discuss the structure of Isotope with suitable examples.
  • What is ionization energy? Describe its trend in the periodic table.
  • What is general principle of solubility?
  • What is electrolytic cell briefly describe its construction and working?
  • What is an isotope? Describe the isotope of hydrogen with diagram.
  • What is a molecule? Write different types of molecules
  • What is a coordinate covalent bond? Explain it with example.
  • What do you mean by shielding effect? Explain its trends in periodic table.
  • What do you mean by blocks in a periodic table and why elements were placed in blocks?
  • What are ionic and covalent compounds?
  • What are Intermolecular forces?
  • There are 3.01 x 1023 molecules of CO2 present in a container. Calculate the number of moles and its mass
  • Mole is SI unit for the amount of a substance. Define it with examples.
  • How was it proved that electrons are fundamental particles of an atom?
  • How Rutherford discovered that atom has a nucleus located at the centre of the atom?
  • How much NaOH is required to prepare 500cm3 of 0.4M solution?
  • How can a non-spontaneous reaction be carried out in an electrolytic cell? Discuss in detail.
  • How are cathode rays produced? What are its five major characteristics?
  • How are cathode rays produced? Give properties of cathode rays. What conclusion you derive from these properties.


  • What are important physical characteristics of metals?
  • Give the five characteristics of colloid?
  • Explain the types of covalent bonds with at least one example of each type.
  • Explain Rutherford’s atomic model. Also write observations made by Rutherford.
  • Discuss the important features of modern periodic table.
  • Discuss the construction and working of a cell in which electricity is produced.
  • Differentiate between dilute solution and concentrated solutions with a common example.
  • Define hydrogen bonding. Explain how these properties affect the physical properties of compound.
  • Define Galvanic cell. Briefly describe the construction and working of Daniel cell?
  • Define electroplating. Briefly describe its principle, purpose and procedure.
  • Give the applications of isotopes in the field of radiotherapy and medicines.
  • Give basic postulates of Bohr’s atomic theory.
  • Give at least five characteristics of suspension?
  • Define boiling point and also explain the factors which are affected on it?
  • Define and explain Charles’s Law of gasses.
  • Compare the characteristics of solution, colloid and suspension.
  • Compare any four physical properties of metals and non-metals.
  • Calculate the number of moles, number of molecule atoms present in 6 grams of water.
  • Calculate the number of moles of coal in the given mass.
  • Briefly describe the electrolytic refining of copper.
  • Briefly describe the electrolysis of water.
  • Describe the trends of electro negativity in a period and in a group.
  • Describe the rules for assigning the oxidation state.
  • Describe the phenomenon of diffusion in liquids along the factors which influence it.
  • Describe the factors which influence the diffusion of liquid.
  • Describe some major applications of radioactive isotopes in our surroundings.
  • Describe Nelson’s Cell for the manufacture of Caustic soda from brine solution.
  • Describe different ways of expressing the percentage composition of a solution.
  • Define electron affinity. Describe its trend in periodic table.
  • Define diffusion, Alkali metals and Alkaline earth metals.
  • Define coordinate covalent bond. How it is formed. Explain with examples.
  • Define Boyle’s Law and verify with an example.
  • Describe different types of molecules.
  • Branches of chemistry.


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