In this post i am going to tell you 1st year Chemistry Guess Paper - 11th Class Chemistry Important Question 2020 And Past Paper Important Question

1st year Chemistry Guess Paper - 11th Class Chemistry Important Question


Chapter 1 Chemistry Important Question


1)What is yield ? Actual Yield usually less than theoretical yield Why?

2)Deference between atom and molecule?

3)Define ion and give two examples

4)What is deference between homoatomic and hetroatomic Molecule Give Example?

5)Define limited reactant?

6)Give steps involved to identify a limited reactant ?

7)Write Two Assumption of stoichiometry  ?

8)MG Heavier than that of carbon atom why?

9)Define Atomic mass unit,Give its value in grams?

10)Deference between Empirical And Moleculer Formula?

11)What is mass Spectrum?

12)What are Main points or steps for determination of molecular formula?

13)Define Atomicity

14)What is percentage yield?

15)Deference between actual yield and theoretical yield?

16)What is Mole and molar volume?


Chapter 2 Chemistry Important Question

17)What is filter medium . Name two

18)Define crystallization 

19)Why sintered glass crucible is preferred to gooch crucible 

20)Define sublimation with two example

21)Describe the method to collect crystals from its mother liquor 

22)What is fluted paper

23)Defference between absorption and partition chromatography

24)Name of steps which are used in crystallization

25)What is stationary phase and mobile phase

26)Disadvantage of slow crystallization

27)Method of drying of crystals 

28)What is distribution law and partition law

29)Give uses of chromatography


Chapter 3 Chemistry Important Question

30)What is boyl’s law 


31)What is natural and artificial plasma

32)Why gases show non ideal behavior at low temperature and high temperature

33)What is graham law

34)What is Fahrenheit scale

35)What is charles  law

36)Define critical temperature and the critical volume of gases 

37)Kinetic molecular theory 

38)What is diffusion and effusion

39)What is pressure

40)What is absolute zero

41)Water vapour do not behave ideally at 273K

42)What is critical pressure and temperature

43)Describe Dalton law

44)What is thermometry

45)Describe two causes of Deviation from ideality

46)What is Joule Thomson Effect

47)What is plasma state

48)SO2 IS NON ideal at 273 k, But behaves like an ideal gas at 327 k?


Chapter 4 Chemistry Important Question


49)What that is non conductor of electricity?


50)What is London Dispersion forces?

51)Properties of molecular solid?


52)What is heat of fusion and molar heat of vaporization?

53)What is anisotropy?

54)Why diamond is hard and an electrically insulator

55) What is Dipole Dipole forces

56)What is unit cell

57)Why evaporation take place at all temperature

58)Why boiling point of water is different at Murree hill and at Mount Everest

59)What is boiling point

60)Why do we feel cooling affect after taking bath

61)What is polymorphism 

62)Why metals are good conductor

63)Why heat of sublimation is greater than heat of vaporization

64)Why intermolecular forces are weaker than interamolecular forces

65)Ionic crystal are highly brittle.why

66)Cleavage of the crystals its itself anisotropic  

67)What is amorphous solid and crystalline solids

68)Importance of vacuum distillation

69)Evaporation cause cooling why

70)What is isomorphism

71)Working of pressure cooker

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