Check the below NCERT MCQ Questions for Class 11 Chemistry Chapter 5 States of Matter with Answers Pdf free download. MCQ Questions for Class 11 Chemistry with Answers were prepared based on the latest exam pattern. We have provided States of Matter Class 11 Chemistry MCQs Questions with Answers to help students understand the concept very well.
Q.1 Sl unit of pressure is :
(a) Pascal
(b) torr
(c) mm of Hg
(d) none of the above
(a) Pascal
Q.2 Cooling is caused by :
(a) Evaporation
(b) Convection
(c) Conduction
(d) none of the above
(c) Conduction
Q.3 A gas will approach ideal behaviour at
(a) Low temperature, low pressure
(b) Low temperature, high pressure
(c) High temperature, low pressure
(d) High temperature, high pressure
(c) High temperature, low pressure
Q.4 Three containers A, B, C of equal volume contain oxygen, neon and methane respectively at same temperature and pressure. The increasing order of their masses is
(a) A < B < C
(b) B < C < A
(c) C < A < B
(d) C < B < A
(d) C < B < A
Q.5 Containers A and B have same gas. Pressure, volume and temperature of A are all twice those of B. The ratio of number of molecules of A and B is
(a) 1 : 2
(b) 2 : 1
(c) 1 : 4
(d) 4 : 1
(b) 2 : 1
Q.6 1 atmosphere is equal to:
(a) 1 torr
(b) 760 cm
(c) 760 mm
(d) 76 torr
(c) 760 mm
Q.7 According to kinetic theory of gases,in an ideal gas,between two successive collisions a gas molecule travels
(a) In a circular path
(b) In a wavy path
(c) In a straight line path
(d) With an accelerated velocity
(c) In a straight line path
Q.8 When did substances exist in different crystalline forms the phenomenon is called :
(a) Allotropy
(b) Polymorphism
(c) Polymerization
(d) Isomorphism
(b) Polymorphism
Q.9 Grahams law refers to :
(a) Boiling point of water
(b) Gaseous Diffusion
(c) Gas Compression
(d) Volume changes of gases
(b) Gaseous Diffusion
Q.10 If the pressure of a gas is increased then its mean free path becomes:
(a) 0
(b) Less
(c) More
(d) Infinity
(b) Less
Q.11 The density of neon will be highest at
(a) STP
(b) 0°C and 2 atm
(c) 273°C, 1 atm
(d) 273°C, 0.5 atm
(b) 0°C and 2 atm
Q.12 The rise or fall of a liquid within a tube of small bore is called :
(a) Surface Tension
(b) Capillary Action
(c) Viscosity
(d) Formation of Curvature
(b) Capillary Action
Q.13 The rates of diffusion of gases are inversely proportional to square root of their densities . This statement refers to :
(a) Daltons Law
(b) Grahams Law
(c) Avogadros Law
(d) None of the Above
(b) Grahams Law
Q.14 The rate of diffusion methane is twice that of X. The molecular mass of X is
(a) 64.0
(b) 32.0
(c) 40
(d) 80
(a) 64.0
Q.15 If helium and methane are allowed to diffuse out of the container under the similar conditions of temperature and pressure, then the ratio of rate of diffusion of helium to methane is:
(a) 2 : 1
(b) 1 : 2
(c) 3 : 5
(d) 4 : 1
(a) 2 : 1
Q.16 Equal masses of ethane and hydrogen are mixed in an empty container at 25°C . The fraction of total pressure exerted by hydrogen is
(a) 1 : 2
(b) 1 : 1
(c) 01 : 16
(d) 15 : 16
(d) 15 : 16
Q.17 Name the liquid with higher vapour pressure in the following pairs:
(a) Alcohol, glycerine (b) Petrol, kerosene (c) mercury, water.
(a) Alcohol, Water, Petrol
(b) Petrol, Water, Alcohol
(c) Alcohol, Petrol, Water
(d) None of these
(c) Alcohol, Petrol, Water
Q.18 The volume of 2.8 g of carbon monoxide at 27°C and 0.0821 atm is
(a) 30 L
(b) 3 L
(c) 0.3 L
(d) 1.5 L
(a) 30 L
Q.19 Rate of effusion of a gas is
(a) Directly proportional to its density
(b) Directly proportional to its molar mass
(c) Directly proportional to the square root of its mass
(d) Inversely proportional to the square root of its molar mass
(d) Inversely proportional to the square root of its molar mass
Q.20 The state of matter that shows the uniformity of behavior :
(a) Solid Liquid
(b) Liquid
(c) Gas
(d) None of the Above
(c) Gas
Q.21 The van der Waals equation reduces itself to the ideal gas equation at
(a) high pressure and low temperature
(b) low pressure and low temperature
(c) low pressure and high temperature
(d) low pressure and low temperature
(c) low pressure and high temperature
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