CLASS 11 CHEMISTRY SAMPLE PAPER (IMPORTANT FOR HALF YEARLY EXAMS PRACTICE)

            CLASS 11 CHEMISTRY SAMPLE PAPER

                 (IMPORTANT FOR HALF YEARLY EXAMS PRACTICE)

                           

Many syllabus / chapters / topics have been removed from CLASS 11 chemistry for the session 2022-23, 

👉The possible syllabus (SYLLABUS) for CLASS 12 chemistry for HALFY YEARLY EXAM 2022-23 is as follows

   CLASS 11 chemistry

      Chemistry

1. Some Basic Concepts of Chemistry

2 Atomic Structure,

3 Classification and periodicity of elements,

(14 Environmental chemicals - removed for this session),

4. Chemical Bonding and Molecular Structure

9. Hydrogen (for this session - dropped)

8. oxidation-reduction reactions

12. Organic Chemistry Some Basic Principles and Techniques

13. hydrocarbons

Chapter 5 States of Matter - Gases and Liquids

Chapter 6 Chemical Thermodynamics

practical work

Qualitative analysis of inorganic salts. Identification of one basic and one acidic radicals in inorganic acids.

Acidic radicals - CO2 , S2

alkaline radical Pb 2 + etc.

  project work any one

Note - Questions are not likely to come from the deleted course

👉Click this link to download chemistry blueprint

                  CLASS 11 CHEMISTRY OBJECTIVE QUESTIONS FOR 28 MARKS

                                          Will be asked Objective questions are mainly asked in 4 types

1.Choose the correct option

2. Write the answer in one word/sentence

3. Fill in the blanks

4 match the  correct pair

Apart from this, 8 questions of 2 marks, 4 questions of 3 marks, 1 question of 4 marks and 2 questions of 5 marks will also be asked.

          Half Yearly Exam 2022-23

          model question paper
          CLASS 11 chemistry

Time-3.00 hours Marks-70

Instructions:-1. It is compulsory to attempt all the questions.

  2. Question no. Internal options are given from 05 to 19.

  3. Question no. Marks 01 to 04 are objective type questions. Separate marks are prescribed for each question.

4. Marks for each question are indicated against it.

5. Question no. Answer each question from 05 to 12 in 30-40 words

6.Question no. Answer questions from 13 to 16 in about 75-80 words each.

7.Question no. Answer 17 in about 80-100 words

8 . Question no. Answer questions 18 to 19 in about 120-150 words each.

Question 1. Write the correct option- 1×7 = 7

i. The volume of 7 grams of nitrogen gas at NTP will be

  (A) 22.4 liters (B) 11.2 liters (C) 5.6 liters (D) 2.24 liters

II. Isotopes have the same number of them?

(a) Proton (b) Neutron (c) Proton and Neutron (d) Nucleon

III. The order of first ionisation potential of Be, B, N and O is-

   A.N>O>Be>B B. N>Be>O>B C. Be>B>N>O D. B>Be>O>N

iv. Which of the following has the most covalent character?

(a) NaCl (b) MgCl2 (c) AlCl3 (d) SiCl4

v. Entropy of the universe - -

(a) increasing (b) decreasing (c) constant (d) decreasing or increasing at an ideal rate

vi. Which of the following shows geometrical isomerism

(A) 2 -methylpropene (B) but-2 -ene

  (C) Butyn-1 -ene (D) Propene

vii The maximum number of electrons an orbital can hold is

(a) 2 (b) 3

(c) 4 (d) 6

Question 2. Fill in the blanks - 1×7 = 7

i Radical formula of benzene will be-----------.

ii. The number of unpaired electrons in oxygen is --------------------

iii. The general formula of alkyne is ------------

iv Na to Na+ will be ______________ in size.

v. When matter energy is not exchanged with the outer space, that system is called ------.

vi. The value of heat of neutralization of strong acid and strong base is --------------

viii. The shape of PF5 molecule will be --------------- ,

  

Question 3. Match the correct pair 1×7 = 7

 A                  B

Pressure - Jeldal Method

Discovery of Protons - Both Oxidation Reduction

 electronegativity 4 - linear

  Octave Rule - Newland

BeCl 2 - fluorine

   Redox Reaction - Jeldal Method

  Nitrogen Estimation - Pascal                                                        

Question.4. Write answer in one sentence. 1×7 = 7

i. Write the formula for ppm (parts per million)?

II. Which orbital does not have directional effect?

iii. What will be the effect on ionization potential on moving from left to right in a period?

iv. Which color does Na give in Bunsen flame?

v. How many sigma and how many pi bonds are present in the molecule of benzene?

vi What is enthalpy?

vii. Which gas is mainly present in marsh gas?

Question.5. What is the proportional formula (2)

                                          Or

          How do we prove that air is a mixture or not a compound?

Question.6. It is more correct to call the law of conservation of mass as the law of conservation of mass and energy. (2)

                                              Or

                              What is marginal reactant?

Question 7. Calculate the number of electrons in 1 gram weight? (2)

                                        Or

    Why is the word exclusion used in Pavli theory?

Question 8. Copper (i) is diamagnetic while copper (ii) is diamagnetic. Give reason. 2 (2)

                                       Or

Why is Hund's law called the law of maximum abundance?

Question 9. Why are the physical and chemical properties of the elements present in the same group similar?

                                   Or

       The enthalpy of ionisation of N is more than that of O. Why? (2)

Question 10. Which molecule has more dipole moment in NH3 and NF3 and why? (2)

                                          Or

  Cu metal is a good conductor of electricity but CuSO4 is a good conductor only in molten state or aqueous solution. Why?                       

Question 11. Write two differences between inductive and electromeric effect? (2)

                              Or

     Explain functional group isomerism with an example.

Question.12. What is oxidizer? (2)

                     Or

Define reducing agent?

Question.13. The physical and chemical properties of elements are periodic function of their atomic number, explain it on the basis of long periodic table? (3)

                                Or

Understand the following -

i. Ionization potential ii. electron affinity

Question 14. When a copper rod is immersed in silver nitrate solution, the solution becomes hot but not vice versa. Why? (3)

                                     Or

  H2 gas is released by the action of dilute H2SO4 on ionization but why not from Ag?

Question 15. Write the structural formulas of the following compounds 3

     i. Benzeldai Hyde ii. Acetone iii. ethyl acetate

                       Or

  Write short note on the following

i, carbanium ii. free radical

Question 16. Write the chemical reaction of combustion of the following hydrocarbons.

        i. Butane ii. Pantene iii. Tyloon

                             Or

Benzene has three double bonds yet it is highly stable why? write

Question 17. Addition of HBr on propene gives 2 bromo propane while reaction in the presence of benzyl peroxide gives 1 bromo propane. Explain the reason with the help of mechanism (4)

                                       Or

       Write clearly how to convert the following into benzene.

         i. ethene ii phenol

Question 18. Explain quantum numbers and their importance with suitable examples (5)

                         Or

  Explain the following-

i. n+l rule ii. heisenberg's uncertainty principle

Question 19. What is meant by Gibbs free energy change? Sign is very important in free energy. Verify this statement (5 )

                       Or

The formation enthalpies of CO (g), CO2 (g), N2O (g) and N2O4 are -110, -393, 81 and 9.7 KJ mol-1 respectively. reaction

Find the value of ^H for Na2O(g) + 3CO (g) --------------> N2O (g)+ 3CO2 (g)

👉Note:- Class11 half yearly question paper pdf 2022 23 (chemistry ) download करें 

1. Some grammatical errors are possible in the question paper and text material, please ignore them and take the efforts made in a positive way.

2 . Click and remember the site https://www.vimarshportal.in for model question paper, blue print, question bank, and practice paper for upcoming annual examination etc. of all other subjects of class 9th to 12th

Note- Students can practice this question paper well, along with it they can also prepare well whatever preparation they have done. To check your preparation, please write the answers of the above question paper in your copy or answer book by yourself and check those answers yourself with the help of your book and other material. This type of practice will surely give you not only semi Can get good marks in annual examination but also in annual examination.

In the above question paper, the syllabus till November 2022 has been taken, as well as it has not included the removed syllabus for this year, but by mistake, if any subject matter point or question is included in it, please do not take it otherwise. Because in the upcoming session 2023-24 you have to study from the complete syllabus and questions will be asked from that only.

For the preparation of class 9th to 12th examinations, keep visiting https://www.vimarshportal.in continuously and also inform your friends about it.