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MCQs

Total Questions : 30 | Page 3 of 3 pages
Question 21. As the molecular mass of gasses increases their density
  1.    decreases
  2.    increases
  3.    remains constant
  4.    none of above
 Discuss Question
Answer: Option B. -> increases
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 22. An ordered, repeating three-dimensional arrangement of particles makes up a
  1.    crystalline solid
  2.    amorphous solid
  3.    non crystalline solid
  4.    none of above
 Discuss Question
Answer: Option A. -> crystalline solid
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 23. In a pressure cooker, the pressure applied is
  1.    1 atm
  2.    2 atm
  3.    3 atm
  4.    4 atm
 Discuss Question
Answer: Option B. -> 2 atm
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 24. The position of liquid molecules are
  1.    fixed
  2.    not fixed
  3.    not sliding
  4.    none of above
 Discuss Question
Answer: Option B. -> not fixed
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 25. If the temperature of any gas is increased its volume
  1.    increases
  2.    decreases
  3.    remains same
  4.    none of above
 Discuss Question
Answer: Option A. -> increases
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 26. On applying pressure the volume of gas
  1.    increases
  2.    remains same
  3.    becomes double
  4.    decreases
 Discuss Question
Answer: Option D. -> decreases
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 27. Boiling point is the temperature at which vapor pressure is
  1.    more than external pressure
  2.    less than external pressure
  3.    not related to external pressure
  4.    equal to external pressure
 Discuss Question
Answer: Option D. -> equal to external pressure
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 28. The escape of gas molecules from a small hole one after the other is called
  1.    diffusion
  2.    effusion
  3.    concentration
  4.    mobility
 Discuss Question
Answer: Option B. -> effusion
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 29. At constant temperature, when pressure is decreased the average kinetic energy of gas molecules
  1.    decreases
  2.    remains unchanged
  3.    decreases
  4.    becomes two fold
 Discuss Question
Answer: Option B. -> remains unchanged
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 30. Force exerted by a gas on unit area of the container is called
  1.    effusion
  2.    diffusion
  3.    mobility
  4.    pressure
 Discuss Question
Answer: Option D. -> pressure
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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