1000+ State of Matter MCQ for CTET [Solved]

1. From the Dulong and Petit's law atomic weight is given by which one of the following relations?
A. 6.41 sp. heat
B. 6.4/sp. heat
C. sp. heat/6.4
D. sp. heat/6.4 x 2
Answer : A

2. Correct gas equation is
A. $\frac{P_1{V}_1}{P_2{V}_2}=\frac{T_1}{T_2}$
B. $\frac{V_1{T}_2}{P_1}=\frac{P_2{T}_1}{T_2}$
C. $\frac{P_1{T}_1}{V_1}=\frac{P_2{T}_2}{V_2}$
D. $\frac{V_1{V}_2}{T_1{T}_2}=P_1{P}_2$
Answer : A

3. The number of N2 molecules present in 28 nitrogen is
A. 2 x 10
B. 6 x ${}^{{10}^{22}}$
C. 6 x ${}^{{10}^{23}}$ approximately
D. 5 x ${}^{{10}^{30}}$ approximately
Answer : C

4. A vessel containing 10 litre of air at atmospheric pressure is connected to an evacuated 9 litre vessel The resulting pressure will be
A. 2 atm
B. 31 atm
C. 0.526 atm
D. 52.6 atm
Answer : C

5. The electrical conductivity of metals is of the order of
A. ${10}^{12}oh{m}^{-1}c{m}^{-1}$
B. ${10}^{8}oh{m}^{-1}c{m}^{-1}$
C. ${10}^{2}oh{m}^{-1}c{m}^{-1}$
D. ${10}^{-6}oh{m}^{-1}c{m}^{-1}$
Answer : B

6. In a close packed arrangement of N spheres, the number of octahedral holes are
A. N
B. 2N
C. 4N
D. 8N
Answer : A

7. If the tetrahedral sites in ccp arrangement of negative ions (Y) were half filled with cation (X), the empirical formula of the compound would be
A. $X_{2}Y$
B. XY
C. $X{Y}_2$
D. $X_2{Y}_3$
Answer : B

8. The relation between molecular wt. and vapour density is
A. Molecular wt. = $\frac{2}{3}$ V.D.
B. Molecular wt. = $\frac{1}{3}$ V.D.
C. Molecular wt. = V.D.
D. Molecualr wt = 2 x V.D.
Answer : A

9. What will be the mass of 6.023 x ${10}^{23}$ molecules of carbon monoxide?
A. 14 gm
B. 28 gm
C. 16 gm
D. 44 gm
Answer : D

10. In a face centred cubic arrangement of ions, the coordination number of ions is
A. 6
B. 8
C. 12
D. 4
Answer : C

11. 22.4 litre of any gas at N.T.P. will contain
A. One gram equivalent
B. One gram atomic weight
C. One gram atom
D. One gram molecule
Answer : D

12. The kinetic theory of gases predicts that total kinetic energy of a gaseous assembly depends upon the
A. pressure of a gas
B. temperature of the gas
C. volume of the gas
D. pressure, temperature and volume of the gas
Answer : B

13. In a solid atoms A are arranged in ccp array. Atoms B occupy all the octahedral voids and half the tetrahedral voids. The formula of the compound is expected to be
A. $A{B}_2$
B. $A{B}_3$
C. $A_2{B}_3$
D. $A_{2}B$
Answer : A

14. The vapour density of completely dissociated sociated $N{H}_{4}CL$ would be
A. Determined by the amount of solid $N{H}_{4}CL$ used in the experiment
B. Triple to that of $N{H}_{4}CL$
C. Half of that $N{H}_{4}CL$
D. Slightly less than half of that of $N{H}_{4}CL$
Answer : C

15. Which of the following statement wrong?
A. In solid state molecules, atoms or ions are held with a strong force of attraction and are in a fixed position
B. In liquid state the molecules, atom or ions are held with a strong force and have a restricted motion
C. In gaseous states, the molecules are randomly arranged and are apart from each other
D. Solid, liquid and gaseous states have different movement is particles
Answer : B

16. Volume occupied by 4.4 gift of carbon dioxide is
A. 4.4 litres
B. 2.24 litres
C. 22.4 litres
D. 4.48 litres
Answer : B

17. Cubic close packed arrangement of ions is described as
A. ABC AB ABC.....
B. ABC ABC......
C. AB AB..........
D. ABC CBA...
Answer : B

18. In what ratio by mass carbon monoxide and nitrogen should be mixed so that partial pressure exerted by each gas is same?
A. $m\left(N_2\right)=m\left(CO\right)$
B. $m\left(N_2\right)=2m\left(CO\right)$
C. $m\left(N_2\right)=0.5m\left(CO\right)$
D. None of these
Answer : A

19. Sodium chloride has fee structure. How many $N{a}^{+}$ and $C{l}^{-}$ ions are there in the unit cell?.
A. 6 and 6
B. 4 and 4
C. 1 and 1
D. 6 and 4
Answer : B

20. At what temperature, the root mean square velocity of oxygen molecules is equal to that of $S{O}_2$ at 27°C?
A. 150°C
B. 150°K
C. 27°C
D. None of these
Answer : B

21. Molecular formula of D in the above case is
A. $A{B}_5$
B. $A_5{B}_2$
C. $A_2{B}_5$
D. AB
Answer : D

22. Which compound possesses greatest lattice energy?
A. LiF
B. NaF
C. KF
D. CsF
Answer : A

23. Equal weights of methane and hydrogen are mixed in an empty container at 25°C. The fraction of the total pressure exerted by methane is
A. 1/2
B. 1/3
C. 1/9
D. 8/9
Answer : C

24. The number of atoms per unit cell in simple cubic, face centred cubic and body centred cubic arrangement are, respectively
A. 8,14,9
B. 1,2,4
C. 1,4,2
D. 8,4, 2
Answer : C

25. The mean free path of a gas molecule is the distance
A. between the two opposite walls of the container
B. through which the molecules travel in one second
C. through which molecules move between two consecutive collisions
D. travelled by all the molecules divided by the total number of molecules in a particular gas
Answer : C

26. 1.The correct relationship representing the volume occupied by 44 gm of $C{O}_2$ and 64 gm of $S{O}_2$ at constant temperahire and pressure:
A. V($C{O}_{2 }$) > V($S{O}_2$)
B. V($C{O}_{2 }$) = V($S{O}_2$)
C. V($S{O}_2$) > V($C{O}_{2 }$)
D. cannot be predicted
Answer : B

27. The temperature at which a real gas obeys the ideal gas laws over a wide range of pressure:
A. critical temperature
B. Boyle's temperature
C. inversion temperature
D. reduced temperature
Answer : B

28. In the process of sublimation, the substance transforms directly
A. from the solid state to the liquid state
B. from the liquid state to gaseous state
C. from the solid state to gaseous state
D. from the liquid state to solid state
Answer : C

29. In NaCl type structure, the coordination number of the cation and anion are
A. 6 and 4
B. 6 and 6
C. 4 and 4
D. 8 and 4
Answer : B

30. In the wurtzite structure sulphur atoms have
A. cubic arrangement
B. hexagonal dose packed arrangement
C. body centred arrangement
D. None of these
Answer : B

31. Which of the following is an amorphous solid?
A. NaCl
B. $Ca{F}_2$
C. Diamond
D. Glass
Answer : D

32. If all the octahedral sites in a cubic close packed arrangement ($B^{-}$) are completelyfilled with $A^{+}$ cations, the empirical formula of the compound could then be
A. $A{B}_2$
B. $A_{2}B$
C. AB
D. None of these
Answer : C

33. All gases tend to show ideal behaviour
A. at low temperature and low pressure
B. at high temperature and high pressure
C. at high temperature and low pressure
D. at low temperature and high pressure
Answer : C

34. Of the following properties, the magnitude of one must always increase with temperature. The property is
A. vapour pressure
B. density
C. $∆H_{vap}$
D. surface tension
Answer : A

35. The vapour density of a gas is 11.2. The volume occupied by 2.4 g of the gas at S.T.P wil be
A. 2.4 litres
B. 3.6 litres
C. 2.24 litres
D. 11.2 liters
Answer : D

36. How many nearest neighbours are there in an atom or ion in an octahedral hole of a close packed structure?
A. 4
B. 6
C. 8
D. 18
Answer : B

37. Which one of the following contains same number of molecules as 4.4 gm of carbon dioxide (mol. wt. of $C{O}_2$ = 44, Mol, wt. of $S{O}_2$ = 64)?
A. 64 gm of sulphur dioxide
B. 4.4 gm of sulphur dioxide
C. 6.4 gm of sulphur dioxide
D. 3.2 gm of sulphur dioxide
Answer : C

38. The vapour density of pure ozone would be
A. 32
B. 8
C. 12
D. 24
Answer : B

39. In a dose packed arrangement of N spheres, the number of tetrahedral holes are
A. N
B. 2N
C. N/2
D. $N_2$
Answer : B

40. Indicate the most volatile liquid of the following:
A. $C{H}_{3}OH$
B. $C{H}_{3}OC{H}_3$
C. $H_{2}O$
D. $C{H}_{3}C{H}_{2}OC{H}_{2}C{H}_3$
Answer : D

41. For a given gas at temperature T and pressure P the root mean square velocity (RMS) is C; then at temperature T and pressure 3P the RMS is
A. Unchanged
B. 3C
C. C/3
D. $C^3$
Answer : A

42. Three dimensional array of points in space is called
A. unit cell
B. crystal lattice
C. micro-crystal
D. None of these
Answer : A

43. If the temperature and pressure remain unchanged the volume of $O_2$obtained by the decomposition of a certain volume of $S{O}_2$ will be
A. Triple the volume of $S{O}_2$
B. Half the volume of $S{O}_2$
C. Equal to the volume of $S{O}_2$
D. One third the volume of $S{O}_2$
Answer : C

44. The critical temperature of a substance is defined as
A. the temperature above which the substance decomposes
B. the temperature above which the substance can exist only as a gas
C. melting point of the substance
D. boiling point of the substanc
Answer : B

45. Which of the following methods is used to determine the atomic weight?
A. Victor Meyer's method
B. Dumas' method
C. Cannizaro's method
D. None of these
Answer : C

46. What is the vapour pressure of benzoyl chloride at its boiling point (197°C)?
A. 760 torr
B. 380 torr
C. 197 torr
D. None of these
Answer : A

47. In anti-fluorite structure the negative ions
A. occupy tetrahedral voids
B. occupy octahedral voids
C. are arranged in ccp
D. are arranged in hcp
Answer : C

48. Match box has the symmetry of which of the following systems?
A. Cubic
B. Orthorhombic
C. Tetragonal
D. Monoclinic
Answer : A

49. The weight of 22.4 litres of any gas at N.T.P. represent its
A. gm atomic weight
B. gm molecular weight
C. gm equivalent weight
D. None of these
Answer : B

50. Which of the following would you expect to affect the vapour pressure of a liquid?
A. Inter-molecular forces in the liquid
B. Volume of the liquid in the liquid-vapour equilibrium
C. Volume of the vapour in the liquid-vapour equilibrium
D. The size of the container in which liquid-vapour equilibrium is establishe
Answer : A