**CBSE Class 11 Chemistry Worksheet - States Of Matter ****- Practice worksheets for CBSE students. Prepared by teachers of the best CBSE schools in India.**

**CLASS – XI **

**CHEMISTRY**

** STATES OF MATTER **

Q1. Why do we require knowledge of the State of matter while dealing with data of experiments?

Q2. What determine the state of a substance?

Q3. Why are aerated water bottles kept under water during summer /

Q4. The size of weather balloon becomes larger and larger as it ascends up into higher altitudes. Why?

Q5. What is the boiling point of water at (i) higher altitude (ii) in pressure cooker?

Q6. What is moist air lighter than dry air?

Q7. How are the three states of matter compared? Give points of difference.

Q8. Explain (i) Dispersion forces (ii) Dipole – Dipole forces (iii) Dipole induced Dipole forces (iv) Hydrogen bond by giving example.

Q9. Draw graph of Boyle’s Law.

Q10. Give most common application of Dalton’s law.

Q11. What names are given to the following Ideal gas relationships?

(a) Volume and moles at constant T and p.

(b) Press of non-reacting gases in mixture of constant T and V. (c) V & T in Kelvin at constant p and n?

Q12. State charle’s Law, what is Absolute Law

Q13. What is isochors and isobar?

Q14. What is Ideal Gas Equation? Why Gas constant is known as Universal Gas constant.

Q15. Why Ideal Gas Equation is called equation of state.

Q16. State and explain Dalton’s Law of partial pressures. Prove that partial pressure of a gas is equal to the product of its mole fraction and total pressure in a gaseous mixture.

Q17. A human adult breathes in approximately 0.50 L of air at 1 atm. with each breath if an air tank holds 10L of air at 200 atm, how many breaths the tank will supply.

Q18. What will happen to volume of fixed amt. Of gas at a certain T & P if:-

(a)T is kept constant but press is decreased to 1/4th of original value? (b) Press is halved and temp. in Kelvin is doubled ?

Q19. Calculate the total press in a 10 L cylinder which contains 0.49 of He, 1.6g of Oxygen and 1.4g of N2 at 270C. Also calculate the partial press of the gas int eh cylinder. Assume ideal behaviour for gases.

Q20. At what temp centigrade will the volume of gas at 00C double itself, Pressure remaining constant?

**Students must free download and practice these worksheets to gain more marks in exams. ****CBSE Class 11 Chemistry Worksheet - States Of Matter**