State of Matter 1000+ MCQ with answer for SBI Clerk

1. How many nearest neighbours are there in an octahedral hole of a close packed structure
A. 4
B. 6
C. 8
D. 12
Answer : B

2. Indicate the most viscous liquid of the following
A. propanol-2
B. 1.2, ethandiol
C. 1.2,3 propentriol
D. ethanol
Answer : C

3. Certain volume of a gas exerts on its walls some pressure at a particular temperature. It has been found that by reducing the volume of the gas to half its original value, the pressure becomes I twice that the initial value of constant temperature. This happens because
A. More number of a gas molecules strike the surface per second
B. Velocity of the gas molecules increases
C. Gas molecules attract each other
D. Weight of the gas increase with volume
Answer : C

4. 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

5. In a closed packed structure the pattern ABAB...... represents which one of the following:
A. ccp
B. hcp
C. fccp
D. bcc
Answer : B

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

7. 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

8. 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

9. 7.Which of the following sets of conditions represent the easiest way to liquefy a gas?
A. Low temperature and high pressure
B. High temperature and low pressure
C. High temperature and low pressure
D. None of these
Answer : A

10. One mole of gas is defined as
A. The number of molecules in 22.4 litres of gas at S.T.P
B. The number of molecules contained | in 6 grams of 12 C isotope
C. The number of molecules in one formula weight of gas
D. The number of molecules in litre of gas
Answer : C

11. In a unit cell of cesium chloride the arrangement of cesium ions is
A. face centred cubic
B. hexagonal close packed
C. body centred cubic
D. simple cubic
Answer : C

12. The vol. of 20 gm. of hydrogen at N.T.P. is
A. 22.4 litres
B. 112 litres
C. 12 litres
D. 224 litres
Answer : A

13. 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

14. The number of molecules is 4.25 g of ammonia are approximately
A. 3.5 x ${}^{{10}^{23}}$
B. 2.5 x ${}^{{10}^{23}}$
C. 1.5 x ${}^{{10}^{23}}$
D. 0.5 x ${}^{{10}^{23}}$
Answer : D

15. Number of molecules of carbon dioxide present in 44 gm $C{O}_2$ is
A. 12 x ${}^{{10}^{23}}$ approximately
B. 3 x ${ }^{{10}^{10}}$ approximately
C. 6 x ${ }^{{10}^{10}}$ approximately
D. 3 x ${}^{{10}^{23}}$ approximately
Answer : C

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. A balloon filled with ethane is pricked up with sharp point and quickly plunged into a tank of hydrogen at the same pressure. After some time balloon will
A. be enlarged
B. be collapse
C. remain unchanged in size
D. have half its volume of the gas
Answer : A

18. Gases deviate from the ideal behaviour because their molecules
A. possess negligible volume
B. have forces of attraction between them
C. are polyatomic
D. are not attracted to one another
Answer : B

19. The number of atoms per unit cell in bcc arrangement is
A. 1
B. 4
C. 3
D. 2
Answer : D

20. 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

21. To which of the following mixtures is the Dalton's law of partial pressures not applicable?
A. $H_2+O_2$
B. $N_2+O_2$
C. NO + $O_2$
D. Xe + Ar
Answer : C

22. The molecular velocity of any gas is
A. proportional to absolute temperature
B. proportional to the square root of absolute temperature
C. independent of temperature
D. proportional to die square of absolute temperature
Answer : B

23. The ionic radii of $M{g}^{+2 }$ and $O^{-2}$ are 0.66 $\stackrel{°}{A}$ and 1.40 $\stackrel{°}{A}$ , respectively. The most probable type of gteometry exhibited by MgO on the basis of radius ratio rule is
A. NaCl type
B. CsCl type
C. ZnS type
D. Boron oxide type
Answer : A

24. 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

25. The wt. of 2.8 litres of a gas at N.T.P. is 3.50 gms. Its V.D. is
A. 20
B. 28
C. 32
D. 14
Answer : A

26. 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

27. The number of molecules in 32 gms of oxygen in
A. 6.02 x ${}^{{10}^{10}}$
B. 3.2 x ${}^{{10}^{23}}$
C. 6.02 x ${}^{{10}^{22}}$
D. 32 x ${}^{{10}^{10}}$
Answer : A

28. The number of atoms in 0.004 gm of magnesium is close to
A. 36x ${ }^{{10}^5}$
B. ${ }^{{10}^{20}}$
C. 5 x ${ }^{{10}^{20}}$
D. 6.02 x ${}^{{10}^{23}}$
Answer : B

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

30. Which of the following contains the same number of atoms as 12 gms: of Magnesium (Atomic weights : Mg = 24, C = 12, Ca = 40)
A. 10 gms of calcium
B. 20 gms of carbon
C. 20 gms of calcium
D. 12 gms of carbon
Answer : C

31. The molecular weight of a volatile liquid can be determined by
A. Dumas' method
B. Victor Meyer's method
C. Cryoscopic method
D. Osmotic pressure
Answer : B

32. The coordination number of each sphere in hcp arrangement is
A. 12
B. 8
C. 6
D. 4
Answer : A

33. Which of the following phrases would be incorrect to use?
A. An atom of an element
B. An atom of a compound
C. A molecule of a compound
D. A molecule of an element
Answer : C

34. The V.D. of a gas is 11.2 gm. The volume occupied by 11.2 gm. of this gas at N.T.P. is
A. 12 litre
B. 11.2 litres
C. 2.24 litres
D. 22.4 litres
Answer : A

35. Which of the following will have low heat of fusion?
A. a molecular solid
B. an ionic solid
C. a metallic solid
D. a network of covalent solid
Answer : A

36. In the gas equation PV = xT, x is a constant. The value of the constant depends upon
A. the quantity of gas
B. the quality of gas
C. type values of T and P
D. None of these
Answer : A

37. 5.At a given temperature and pressure 2 volumes of A combine with 5 volumes of B to form 2 volmes of C and 1 volume. A combine with one volume of B to form 2 volumes of D. The formula of C is
A. $A_3{B}_6$
B. $\sqrt{AB}$
C. $A_2{B}_5$
D. $A{B}_5$
Answer : B

38. 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

39. 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

40. 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

41. The vapour density of gas A is four times that of gas B. If the molecular weight of gas B is M, then the molecular weight of gas A is
A. 2M
B. 4M
C. 8M
D. M/4
Answer : B

42. 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

43. Which of the following is an example of covalent network solid?
A. Sodium
B. Solid carbon dioxide
C. Sodium chloride
D. Silicon
Answer : D

44. 22.4 litres of $S{O}_2$ at 27.3°C and 1 atmosphere pressure shall weigh
A. 32 g
B. 16 g
C. 44.8 g
D. 48.5 g
Answer : D

45. Absolute zero is the temperature at which
A. water freezes
B. all gases become liquid
C. all substances are solid
D. molecular motion ceases
Answer : D

46. 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

47. 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

48. The radii of $A^{+}$ and $X^{-}$ are 95 pm and 181 pm respectively. Coordination number of $A^{+}$ is expected to be
A. 8
B. 6
C. 4
D. 3
Answer : B

49. 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

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