The majority of the observable qualities of chemical systems that we are familiar with are the bulk properties of matter or the characteristics of a big group of atoms, ions, or molecules. For instance, the majority of a liquid boils but not each individual molecule. Individual water molecules do not wet; only the aggregate of water molecules may wet. Water can exist as ice, which is a solid, as a liquid, as steam or as water vapour in a gaseous state. Ice, water, and steam have extremely different physical properties. The chemical makeup of water, H2O, is the same in all three water phases.
Download Class 11 Chemistry Worksheet on Chapter 5, States of Matter Set 1 PDF.
CBSE Class 11 Chemistry Chapter 5 States of Matter – Set 1
Q-1: At 600 K, the vapour pressure of water in a closed container is 0.5 atm. If the container’s volume is doubled, its vapour pressure at 600 K will be
a) 0.2 atm
b) 0.8 atm
c) 0.6 atm
d) 0.5 atm
Q-2: In the equation PV = RT, the value of R will depend on
a) The nature of the gas
b) The pressure of the gas
c) The temperature of the gas
d) Units of measurement
Q-3: Air at sea level is dense. This is the practical application of
(a) Charle’s law
(b) Boyle’s law
(c) Dalton’s law
(d) Avogadro’s law
Q-4: Triple point of water is
a) 373.16 K
b) 273.16 K
c) 193.14 K
d) 203.14 K
Q-5: The slope of the plot between PV and P at constant temperature is
a) 1
b) Zero
c) ½
d) None of the above
Q-6: While pumping air into a cycle tyre, a boy noticed that volume, as well as pressure, was increasing. Does Boyle’s law fail here?
Q-7: CO2 is heavier than the nitrogen and oxygen gases that already exist in the atmosphere. However, it does not contribute to the formation of the bottom layer of the atmosphere. Why?
Q-8: The pressure of gas A (PA) is 3.0 atm when it occupies 5 L of the volume. Calculate the final pressure when compressed to a 3 L volume at a constant temperature.
Q-9: At what temperature will a particular mass of gas occupy a volume of 200 L if it fills a volume of 260 L at 30oC and pressure remains constant?
Q-10: A vessel of 5L capacity maintained at 27oC was filled with 16g O2 gas. Calculate the pressure of the gas in the atmosphere in the container.
Q-11: Compare the diffusion rates of 235UF6 and 238UF6.
Q-12: Oxygen and nitrogen gas have critical temperatures of 154.3 K and 126.0 K, respectively. Which of these gases has the strongest intermolecular forces between them?
Q-13: What effect will viscosity have when we pour honey from a jar?
Q-14: Which state of the substance has the highest
(i) Intermolecular forces of attraction
(ii) Thermal energy
(iii) Density
Q-15:
a) State Gay Lussac’s law.
b) Give its graphical representation.
c) What are isochores?
Q-16: 2.9 g of gas at 95oC occupied the same volume as 0.184g of hydrogen at 17oC at the same pressure. What is the molar mass of the gas?
Q-17: A gaseous mixture of CO and CO2 is contained in a 10 dm3 flask at 298 K at a total pressure of 2.0 bar. Find the partial pressure of CO and CO2 if 0.20 mole of CO is present.
Q-18: At 26.7oC, the vapour density of a mixture of NO2 and N2O4 is 38.3. Determine the amount of moles of NO2 in a 100g mixture.
Q-19: Why does urea have a high melting point, yet glass does not?
Q-20: The radius of a nitrogen molecule (N2) is approximately 0.2 nm. Assuming the nitrogen molecule is spherical in shape, compute
(a) The volume of a single N2 molecule.
(b) The proportion of empty space in one mole of N2 gas at S.T.P.
Download the PDF to access answers to the Chemistry Worksheet for Class 11 Chemistry Chapter 5 States of Matter Set – 1.
