CBSE Class 11 Chemistry Sample Paper Set R

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^- <S^2-

(b) Ca²⁺ <K⁺< Ar<S^2-+<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) K_P = K_CRT (b) K_C = K_P (RT) ^-1 

(c) K_P = K_C (RT) -1

(d) K_P = K_C 

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?

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