States Of Matter CBSE Questions & Answers

States Of Matter

This is Chemistry Class 11 States of Matter CBSE Questions & Answers. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
A person living in Shimla observed that cooking food without using pressure cooker takes more time. The reason for this observation is that at high altitude:
  • A
    temperature increases
  • B
    temperature decreases
  • C
    pressure decreases
    Correct
  • D
    pressure increases
2
Which of the following property of water can be used to explain the spherical shape of rain droplets?
  • A
    pressure
  • B
    critical phenomena
  • C
    viscosity
  • D
    surface tension
    Correct
3
A plot of volume (V ) versus temperature (T ) for a gas at constant pressure is a straight line passing through the origin. The plots at different values of pressure are shown in Figure. Which of the following order of pressure is correct for this gas?
Question 3 figure 1
  • A
    p1 < p2 < p3 < p4
    Correct
  • B
    p1 < p2 = p3 < p4
  • C
    p1 > p2 > p3 > p4
  • D
    p1 = p2 = p3 = p4
4
The interaction energy of London force is inversely proportional to sixth power of the distance between two interacting particles but their magnitude depends upon
  • A
    charge of interacting particles
  • B
    mass of interacting particles
  • C
    strength of permanent dipoles in the particles
  • D
    polarisability of interacting particles
    Correct
5
Dipole-dipole forces act between the molecules possessing permanent dipole. Ends of dipoles possess ‘partial charges’. The partial charge is
  • A
    equal to unit electronic charge
  • B
    more than unit electronic charge
  • C
    double the unit electronic charge
  • D
    less than unit electronic charge
    Correct
6
The pressure of a 1:4 mixture of dihydrogen and dioxygen enclosed in a vessel is one atmosphere. What would be the partial pressure of dioxygen?
  • A
    \(0.{\text{8 }} \times {\text{ 1}}{0^{\text{5}}}\)atm
  • B
    0.25 atm
  • C
    \(0.00{\text{8 N}}{{\text{m}}^{--{\text{2}}}}\)
  • D
    \({\text{8 }} \times {\text{ 1}}{0^{\text{4}}}{\text{N}}{{\text{m}}^{--{\text{2}}}}\)
    Correct
7
As the temperature increases, average kinetic energy of molecules increases. What would be the effect of increase of temperature on pressure provided the volume is constant?
  • A
    increases
    Correct
  • B
    remains same
  • C
    becomes half
  • D
    decreases
8
Gases possess characteristic critical temperature which depends upon the magnitude of intermolecular forces between the particles. Following are the critical temperatures of some gases. From the data what would be the order of liquefaction of these gases? Start writing the order from the gas liquefying first
Question 8 figure 1
  • A
    \({{\text{H}}_{\text{2}}},{\text{ He}},{\text{ }}{{\text{O}}_{\text{2}}},{\text{ }}{{\text{N}}_{\text{2}}}\)
  • B
    \({{\text{N}}_{\text{2}}},{\text{ }}{{\text{O}}_{\text{2}}},{\text{ He}},{\text{ }}{{\text{H}}_{\text{2}}}\)
  • C
    \({\text{He}},{\text{ }}{{\text{O}}_{\text{2}}},{\text{ }}{{\text{H}}_{\text{2}}},{\text{ }}{{\text{N}}_{\text{2}}}\)
  • D
    \({{\text{O}}_{\text{2}}},{\text{ }}{{\text{N}}_{\text{2}}},{\text{ }}{{\text{H}}_{\text{2}}},{\text{ He}}\)
    Correct
9
Domestic power supply in India is
  • A
    230 V 50 Hz
    Correct
  • B
    24 V DC
  • C
    416 V 60 Hz
  • D
    110 V 60 Hz
10
What is SI unit of viscosity coefficient\(\left( \eta \right)\)?
  • A
    \({\text{k}}{{\text{m}}^{--{\text{2}}}}{\text{s}}\)
  • B
    \({\text{Ns}}{{\text{m}}^{--{\text{2}}}}\)
    Correct
  • C
    Pascal
  • D
    \({\text{N }}{{\text{m}}^{--{\text{2}}}}\)
11
Atmospheric pressures recorded in different cities are as follows: Consider the above data and mark the place at which liquid will boil first.
Question 11 figure 1
  • A
    Mumbai
  • B
    Shimla
    Correct
  • C
    Bangalore
  • D
    Delhi
12
Which curve in Figure represents the curve of ideal gas?
Question 12 figure 1
  • A
    E and F only
  • B
    B only
    Correct
  • C
    C and D only
  • D
    A and B only
13
Increase in kinetic energy can overcome intermolecular forces of attraction. How will the viscosity of liquid be affected by the increase in temperature?
  • A
    No regular pattern will be followed
  • B
    Increase
  • C
    Decrease
    Correct
  • D
    No effect
14
How does the surface tension of a liquid vary with increase in temperature?
  • A
    Increases
  • B
    No regular pattern is followed
  • C
    Remains same
  • D
    Decreases
    Correct
15
With regard to the gaseous state of matter which of the following statements is correct?
  • A
    Complete order of molecules and fixed position of molecules
  • B
    Complete disorder of molecules and Random motion of molecules
    Correct
  • C
    Random motion of molecules and fixed position of molecules
  • D
    Fixed position of molecules and complete order of molecules