CBSE 11th Standard Chemistry Subject Value Based Questions 2 Mark Questions With Solution 2021
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CBSE 11th Standard Chemistry Subject Value Based Questions 2 Mark Questions With Solution 2021
11th Standard CBSE
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Reg.No. :
Chemistry
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What do you mean by hydrogen economy? How can it be helpful for our society?
(a) -
A student wants to verify the law of conservation of mass in laboratory. He prepared 10% aqueous solution of MgSO 4 and MgCI2. He mixed 10 ml of both in a beaker. He weighed the flask on a balance. After some time he weighed again. There was no change in mass. Answer the following questions given below:-
(i) Was the student able to verify the law of conservation of mass? What was his mistake?
(ii) What is the value associated with it?(a) -
(i) State the Heisenberg's uncertainty principle.
(ii) Write down the significance of Heisenberg principle.
(iii) Do you think it has utility in your daily life? Justify your answer(a) -
(i) What is the basis of classification to the classification of modern periodic table?
(ii) Can you apply the concept of periodic classification to the students in a class?
(iii) What is the value associated with it?(a) -
Ionic compounds have high melting and boiling points. There is strong electrostatic force of attraction between them. Answer the following:
(i) Why ionic solids are poor conductor of electricity?
(ii) What happens to the electrical conductivity when they are dissolved in water?
(iii) What is the value associated with it?(a)
