QUARTERLY EXAM
MODEL QUESTION PAPER
CLASS 11Th CHEMISTRY
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As you all know mp board's quarterly examinations of class 9th to 12th are starting from 7th October. Whose timetable has been released. Also, through the previous post, all of you have been made aware about the possible syllabus to be asked in this examination from class 9th to 12th.
In today's post, we are providing the model question paper of class 11th chemistry subject, on the basis of which questions can be asked in the quarterly examination.
Quarterly Exam 2022-23
model question paper
Subject: Chemistry
Class : 11th
time-3.00 hours integer-70
Instructions:-1. It is mandatory to solve all the questions.
2.Question No. Internal options are given from 05 to 19.
3. Question no. 01 to 04 are objective type questions. Separate marks are allotted for each question.
4. Marks for each question are marked against them.
5. Question no. Answer each question from 05 to 12 in 30-40 words
6.Question No. Answer each question from 13 to 16 in about 75-80 words
7.Question No. Answer 17 in about 80-100 words
7. Question no. Answer each question from 18 to 19 in about 120 words.
Question 1. Write the correct option- 1×7 =7
i. S.T.P. But the mass of 22.4 L CO2 will be:
(A) 11g (B) 22 g (C) 44g (D) 22.4g
II. The number of digits in 0.00300 is:
(A) six (B) five (C) four (D) three
III. The azimuth quantum number (l) for the last electron of Na atom will be ?
(a) 0 (b) 1 (c) 2 (d) 3
iv. The atomic number of an element is 11, the nature of its oxide will be-
(a) acidic (b) alkaline
(c) amphoteric. (d) indifferent.
v. The joint cleavage is formed by-
(a) free radical (b) carbene (c) carbonium ion (d) carbanion ion.
vi. The empirical formula of a compound is CH2. Its gram weight is 42 grams. Its atomic thread will be:
(A) CH4 (B) C2H2 (C) C3H6 (D) C3H8
vii The hybridization state of carbon in CH3 carbanion is-
(a) sp (b) sp2 (c) sp3 (d) sp3d
Question 2. fill in the blank 1×7 = 7
i The number of moles in180gm of water is--------------।I
ii. Atoms size--------------- from top to bottom in a period.
iii. The empirical formula for benzene will be .......।
iv The general formula of an alkane is ……….I
v. Electron affinity to noble gases is ……….
vi. Organic compounds are generally --------------- in water.
viii.An orbital can hold a maximum of ……….electrons.। .
Question 3. Match the correct pair 1×7 = 7
’A’ ’B’
the volume of 1 mole - Estimation of N
of ga molecules
At N.T.P. will be
newland unitless
kerius method - goldstein
Linear - zero group
Argon - BeCl2
discovery of protons -Assessment of Halogens।
mole fraction - octal rule
Duma method - 22.4 liters
Q.4. Write the answer in one sentence. 1×7 =7
i.Write the values of the four quantum numbers of the outermost electron of Na (atomic number 11).
ii. Which of Mg++ and Na+ will have smaller size? ,
iii. What is the geometry of the molecule in sp3 hybridization?
iv. What is connectivity?
v. What will be the oxidation of sulfur in H2S*O4?
vi marsh gas mainly contains which gas?
vii. How many significant digits are there in 1000?
Q.5. Define the empirical formula.? (2)
Or
What is 1 gram atom of the element?
Q.6.What is Mole Concept? (2)
Or
What is the quantity required to make 250 ml N/10 solution of Na2CO3 (molecularly 106 g)?
Question
7. Explain Pauli's exclusion principle with examples. (2)
Or
What is the Afbau principle?
Question 8. Why are the physical and chemical properties of elements present in the same group similar? (2)
Or
The enthalpy of ionization of N is greater than that of O Why ?
Question 9. 13. What is a stock solution?
Or
What is the relation between the molecular formula of a substance and the proportional formula? (2)
Question 10. What is free radical? (2)
Or
Write the structural formulas of the following compounds:
(i) carboxylic acid (ii) ethane
Question 11. What is an oxidising agent? (2)
Or
Define Reduction ?
Q.12. Why are the physical and chemical properties of the elements present in the same group similar? (2)
Or
Why are cations smaller than their parent atoms and anions have a greater radius than their parent atoms? Explain.
Q.13. Copper (I) is diamagnetic while copper (II) is
paramagnetic, give reason.
Or
What is the dual nature of matter? Write the de-Broglie equation related to it. (3)
Question 14. Explain the structure of carbo cation. (3)
Or
Explain functional group metamerism and give one example each.
Question 15. Count the number of atoms in each of the following
(i) 52 moles of C, (ii) 52 g of He. 3
Or
Why is it not possible to find the absolute value of a single electrode potential?
Question 16. What is meant by redox reactions? Write with example. 3
Or
Explain oxidation and reduction on the basis of electronic principle.
Question17. Explain the following: (i) atomic radius, (ii) electron affinity. (4)
Or
Explain VSEPR principle with examples.
Question 18. What is the frequency of radiation emitted when an electron of a hydrogen atom moves from n= 3 to n= 2? Calculate. (5)
Or
Explaining the Bohr atomic model in detail, write its drawbacks.
Question 19. Explain Hund's law of maximum plurality with examples. What is meant by maximum plurality in this rule? 5
Or
What are quantum numbers? Explain their importance with examples
Note- In the question paper given above, the basis of annual examination has been made as well as the syllabus removed for this year has not been included, but by mistake, if any subject matter point or question is included in it, then 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.
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