CBSE Class 11 Chemistry Sample Paper Set 43

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Class 11 Chemistry Solved Model Papers: CBSE Class 11 Chemistry Sample Paper Set 43

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CBSE Class 11 Chemistry Sample Paper Set R.Sample Papers are the very important for every student. The sample papers should be practiced to gain extra marks in examinations. The sample papers have been prepared based on pattern of last year examinations and as per latest changes in the syllabus. Students, teachers and parents can download all CBSE educational material and very well prepared worksheets from this website.  All CBSE educational material is developed by our panel of teachers, have also been submitted by CBSE teachers and students. 

Section -A

1. Which of the following contain equal number of atoms? 

(a) 6.35 g of copper

(b) 2.24 L of NH3 gas at STP

(c) 0.05 mole of hydrogen gas

(d) 2.56 g of sulphur molecules

2. The set of quantum numbers that represents the highest energy of an electron is 

(a) n=4,l=0,m=0,s=+1/2 (b) n=3,l=2,m=1,s=+1/2 (c) n=3,l=1,m=1,s=+1/2 (d) n==,l=0,m=0,s=+1/2

3. Identify the correct order of size of the following: 

(a) Ca2+< Ar<K+<Cl- <S2-

(b) Ca2+ <K+< Ar<S2-+<Cl-

(c) Ca2+< K+< Ar < Cl- <S2

(d) Ar< Ca2+ <K+ < Cl- <S2

4. Choose the correct relationship between & KC for the following reaction 

2SO2 (g) + O2(g) ─> 2SO3 (g)

(a) KP = KCRT (b) KC = KP (RT) -1 

(c) KP = KC (RT) -1

(d) KP = KC 

5. Which of the following is least likely to behave as Lewis acid? 

(a) OH- (b) BF3 (c) NH3 (d) H2O

6. How many sub shells are present in M-shell? 

7. Write resonance structure of SO3 . 

8. Indicate the number of sigma and pi bonds in the molecule CH2=C=CH2 

9. If the density of methanol is 0.739kgL-1 . What is its volume needed for making 2.5 L of its 0.25 M solution? 

10. Which is the number of photons with a wavelength of 4000 pm that provides 1 j of energy?

11. Which hybrid orbital are used by underlined carbon in the following molecules?

(a) CH3 –CHO
(b) CH3---CH==CH2
 
12. Bond angle in NH3 is more than in H2O.Justify. 
 
13. Using van der Waal’s gas equation calculates the pressure exerted by 8.5g of NH3 contained in 0.5 L vessel at 300K. For ammonia “a”= 4.0atmL-2 mol 2- ,”b” = 0.036 L mol-1
 
14. Explain Boyle’s law and Charles law on the basis of kinetic molecular theory of gases.
 
15. Balance the following equation :
Br2 + H2O2 → BrO3 - + H2O (in acidic medium)
 
16. What do you understand by electron deficient and electron precise compounds of hydrogen? Provide justification with suitable example.
 
17. Give reasons:
(a) Alkali metals when dissolved in liquid ammonia give blue colour.
(b) Be and Mg do not impart colour to the flame while other members of the family do. Explain.
or
(a) List properties showing similarity between Lithium and Magnesium.
(b) State as to why a solution of Na2CO3 is alkaline in nature?
 
18. How are silicones prepared? Write its two uses.

 

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Key Advantages of Solving CBSE Class 11 Chemistry Sample Paper Set 43

  • Curriculum Insights: Clarify chapter-wise weightage rules and question trends across Class 11.
  • Gap Analysis: Check performance drops across sets to isolate specific Class 11 Chemistry topics needing extra attention.
  • Time Efficiency: Working through objective and descriptive problems builds critical pacing to finish exams comfortably.

Post-Practice Strategy for Class 11 Chemistry

  1. Review Solutions: Evaluate your completed papers using expert-verified guidance inside our solution sets.
  2. Target Weaknesses: Class 11 students should analyze missed questions to rectify conceptual misunderstandings.
  3. Deep Revision: Re-read sections in the NCERT book for Class 11 Chemistry to clear doubts before solving items again.

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