Whole XI Chemistry Mdcat Online Test-1

1. The spectrum formed when light passes through a gas and the gas atoms absorb specific wavelength of radiation is called ____________. This results in___ with _____ background.

2. Energy of a electron in nth orbit can be calculated by following expression:

3. Which of the following statement is correct for pi bond?

4. Select the correct statement :

5. Value of R when pressure is in atm and volume in dm³:

6. What will be the unit for van der Waal's constant 'a’

7. The electrostatic force of attraction between the positive end of one polar molecule and the negative end of other polar molecule is called :

8. Select the correct statement:

9. Which of the following is not a crystalline solid?

10. The phenomenon in which different solid substances exist in the same crystalline structure is called

11. Given the below characteristics,  properties are concerned with?

1)They are malleable and ductile

2)They are good conductors of heat

3)They are good conductors of electricity

12. Select the correct statement for radius ratio.

13. Sodium Chloride unit cell contains a total of ____ ions

14. ABAC layer of arrangement is found in ____ and its coordination number is__

15. If Ksp < Qsp  then solution is said to be:

16. Select the correct statement.

17. What is correct for Basic buffer?

18. Collision theory postulated that the rate of a chemical reaction depends upon:

19. Unit of K from chemical rate equation can be expressed as

20. A thermodynamic system which do not allow the exchange of mass but permit energy to be transferred is known as

21. At constant pressure the equation for first law of thermodynamic may be written as:

22. What is the function of salt bridge?

23. The process of coating a thin layer of zinc on a metal is knows as

24. Which is the correct for Electrode above Hydrogen in Electrochemical series?

25. The oxidation number of oxygen in peroxides is:

26. Orignal volume of a gas is 100cm³ at 25°C at what temperature in°C its volume will become double

27. Sp3 hybridization with one lone pair gives-----geometry with-----angle

28. Decomposition of Potassium Chlorate  occurs  in  presence of which catalyst:

29. Which of the following is a basic buffer solution?

30. Chemical kinetics deal with all of the following except

31. What is the Oxidation state of Cl in HClO₄-----?

32. In water molecule bond angle is 104.5° if we replace oxygen with  Sulfur then what will be the effect on bond angle?

33. The rule dealing with the distribution of electrons in degenerate orbitals is:

34. Heat of system increase at room temperature in:

35. Maximum number of electrons in a shell of an atom is determined by the formula?

36. Aufbau principle arranges subshells on the basis of:

37. The ratio of volume between 4moles of H₂ and 16g of CH₄ is

38. The total number of electrons that can be accommodated in f subshell?

39. Positive rays are also known as

40. Balmer series in H-spectrum  lies in___region

41. Which of the following is not true for the increase in synthesis of Ammonia by Haber's process

42. What is not true about Le-Chatelier Principle?

43. 10 Pascal is equal to :

44. The real gas behavior is established at:

45. Number of H₂O molecules in 10g of Ice are

46. The % of Ca in CaCO3 is----?

47. 27g of Al reacts completely with how much mass of O2 to produce Al2O3?

48. Ali gave a ring of 0.5 carot diamond to his bride what is the number of carbon in this carbon ring where (1 carot= 200mg)?

49. The outer body of dry cell serves as anode, it is made up of :

50. Limiting reactant is the one which:

51. In reaction given below if 1/2 moles of both reactant is used then how many mole/moles of NH3 are/is produced:

Ca(OH)2 +2NH4Cl(s)⟶ 2NH3(g) + CaCl2 + 2H2O

52. If there are 3.01x10²³ molecules of O2 gas at S.T.P, what will be their volume in cm³?

53. What is the mass percentage of water in Na₂CO₃·10H₂O, given that its molar mass is 286 g/mol?

54. At which conditions is the deviation of oxygen gas from ideal behavior Maximum?

55. When heat is introduced to a gas sample in a closed container, which of the following will inevitably rise?

56. Which of the following statements is not usually true about amorphous solids?

57. Dry ice is an example of:

58. Hydrogen Bond is present in all except:

59. Unit of Viscosity:

60. The highest level of ionization in a gas is primarily caused by:

61. In the ground state of a nickel atom (Z=28), how many electrons have an azimuthal quantum number of 𝑙 = 0 and 𝑙 = 2, respectively?

62. Which represents correct values regarding Debye (D) and Coulomb meter (Cm):

63. What is the bond order of nitrogen gas (N₂) based on its molecular orbital configuration?

64. Bond length is maximum in:

65. Which of the following molecules exhibits the largest bond angle?

66. Determine the oxidation state of sulfur in the compound sulfuric acid (H₂SO₄).

67. Identify the strongest oxidizing agent from the following elements and compounds based on their standard electrode potentials:

68. Consider the reaction:

H2(g) + I2(g) = 2HI(g)

Which of the following is affected by decreasing the volume of the reaction vessel?

I. Rate of reaction

II. Equilibrium concentration of reactants

III. Equilibrium constant (K)

69. Consider the reaction:

H2(g) + I2(g) = 2HI(g)

Which of the following is affected by decreasing the volume of the reaction vessel?

I. Rate of reaction

II. Equilibrium concentration of reactants

III. Equilibrium constant (K)

70. For which of the following equilibrium has the equilibrium constant dimensionless?

71. Which of the following is not considered a state function?

I) Enthalpy

II) Gibbs free energy

III) Work

IV) Heat

V) Entropy

72. All sets of quantum number are correct except:

73. Which of the following substances has a non-zero enthalpy of formation change, while the others have a zero value?

74. In which condition change of enthalpy is positive:

75. Mass of electron:

76. Which of the following is an intrinsic property

77. The geometry of PCl3 is?

78. The reason that CBr4 has a higher B.P that CCl4 is that

79. Bohr model is not applicable on

80. In d-orbital their are ______ lobes

81. 1 mole of Mg has:

82. What volume of NH3 formed from 16.8 dm³ of  N2?

83. Oxygen molecule is:

84. Total number of bonding pairs and lone pairs in CO2 molecule is

85. Carbon atoms in diamond & graphite are in hybrid state respectively:

86. A solid ‘X’ is non-conductor of electricity possess low melting point & readily

sublimes on heating, hence solid ‘X’ belongs to:

87. Which statement is incorrect regarding evaporation?

88. Which property varies with amount of liquid?

89. correct statement of the following is:

90. Real gases behave ideally at;

91. Radioactive decay follows ………. kinetics:

92. Rate of reaction at a specific time is called as:

93. Which gas gives cathode rays of maximum e/m value

94. Maximum value of "n" for an atom is 4, maximum number of electrons in N-shell of same atom is

95. Equal moles is hydrogen, nitrogen and oxygen are taken in different containers at same temperature and pressure, containers have equal...

96. Heat of formation of HI if

2HI⇨H2 + I2 ∆H= -53KJ

97. Which of the following heat always have a positive value....

98. Oxidizing agent is one which....

99. Arrange the given species in ascending order of oxidation state of P,

1. P2O3
2. P4
3. H3PO4
4. PH3

100. Kp for the exothermic reaction: