Q1. The volume of a given amount of gas held at constant pressure is directly proportional to the Kelvin temperature. This is-
(a) Gay-Lussac Law
(b) Charles’ law
(c) Boyle’s law
(d) Pressure law
Q2. In general gas equation, pV = nRT, V is the volume of-
(a) n mole of a gas
(b) Any amount of gas
(c) One gram of a gas
(d) None of the above
Q3. Rate of diffusion of a gas is-
(a) Directly proportional to its density
(b) Directly proportional to its mass
(c) Directly proportional to the square of its molecular mass
(d) Inversely proportional to the square root of its molecular mass
Q4. The perfect example of an ideal gas is –
(a) Air
(b) Water
(c) Hydrogen
(d) None of these
Q5.The mass of one Avogadro number of helium atom is
(a) 1.00 g
(b) 4.00 g
(c) 8.00 g
(d) 6.02 × 1023 g
Q6. The average kinetic energy of a gas particle is-
(a) directly proportional to the temperature
(b) inversely proportional to temperature
(c) inversely proportional to the mass of the particle
(d) None of these
Q7. According to Heisenberg’s uncertainty principle; it is not possible to determine
(a) The position of the electron accurately
(b) The momentum of the electron accurately
(c) Simultaneously the position and momentum of an electron accurately
(d) None of these
Q8. According to Bohr’s theory of hydrogen atom, the angular momentum of the electron in the fourth orbit is given by
(a) h/2?
(b) 4h/?
(c) h/?
(d) 2h/?
Q9. According to Einstein’s mass-energy relation
(a) E = m2c
(b) E = mc
(c) E = mc2
(d) E = vmc
Q10. At constant temperature and pressure, the volume of a gas is directly proportional to the number of molecule. This law had been given by-
(a) Boyle
(b) Charles
(c) Avogadro
(d) None
Answers
S1. Ans.(b)
S2. Ans.(a)
S3. Ans.(d)
S4. Ans.(d)
S5. Ans.(b)
S6. Ans.(a)
S7. Ans.(c)
S8. Ans.(d)
S9. Ans.(c)
S10. Ans.(c)
