CBSE Class 11 Chemistry Previous Year Question Paper 2015 Set 1
This is the CBSE Class 11 Chemistry Previous Year Question Paper from the 2014-15 session, Set 1. The exam paper is for a duration of 3 hours and carries a total of 70 marks. It is divided into various question types: 5 very short answer questions carrying 1 mark each, 6 to 10 short answer questions carrying 2 marks each, 11 to 22 short answer questions carrying 3 marks each, question 23 is a value-based question carrying 4 marks, and questions 24 to 26 are long answer type questions carrying 5 marks each. General instructions include that all questions are compulsory and students may use log tables if necessary, but calculators are not allowed. Solving this previous year's board question paper is an excellent way for students to understand the exam pattern, assess their preparation level, and improve their performance in the upcoming CBSE board examinations.
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Quick info
| Board | CBSE |
|---|---|
| Class | 11 |
| Subject | Chemistry |
| Session | 2014-15 |
| Language | English |
| Type | Previous Year Question Paper |
| Exam type | Board Exam |
Paper pattern
The paper consists of very short answer questions (1 mark each), short answer questions (2 and 3 marks each), a value-based question (4 marks), and long answer type questions (5 marks each).
Topics covered
Paper topics
- Limiting reagent
- Heisenberg Uncertainty Principle
- Vander Waal's constants
- Intermolecular forces
- Lassaigne's test
- Spontaneity of reaction
- Electron gain enthalpy
- Ionization enthalpy
- Dipole moment
Important topics
- Heisenberg Uncertainty Principle
- Electron gain enthalpy
- Ionization enthalpy
- Dipole moment
PDF preview
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Question paper text
GG-RO-1105
Please check total printed pages before start:- 8 Roll No. : ______ O.Z. State Higsenberg Uncertainty Principle. SESSION ENDING EXAMINATION, 2014-15 SUBJECT - CHEMISTRY CLASS - XI
PASSED DW1
T0961
Time: 3:00 Hrs.
M.M. 70 MARKS
Cot of theat two dases which par molecules molecule to be and middlemalmin to abounced
GENERAL INSTRUCTIONS : commeded of the 100s
- All questions are compulsory.
- Question no. 1 to 5 are very short answer questions and carry 1 mark each.
- Question no. 6 to 10 are short answer questions and carry 2 marks each.
- Question no. 11 to 22 are short answer questions and carry 3 marks each.
- Question no. 24 to 26 are long answer type questions and carry 5 marks each.
- Question no. 23 is value based question and carry 4 marks.
117
- Use log table if necessary, use of calculator is not
allowed.
nem atom si neppulo la valatina collatina isti vilve
Which are the arts WE, has higher dipola moment and why P
[P.T.O.] .7
2
GG-RO-1105
Q.1: What do you understand by "Limiting reagent". (1)
Q.2: State Hiesenberg Uncertainty Principle. (1) Q.3: The value of Vander waal's constants a and b are as given for two gases:
Gases a (Atm L<sup>2</sup> mol<sup>-2</sup>) b (L mol<sup>-1</sup>)
CO, 3.6 <math>0.043^{\circ}</math>
SO, 6.7 0.056
Out of these two gases which gas molecules will possess largest magnitude of intermolecular forces of attraction ? (1)
Q.4: In Lasssaigne's test for detection of nitrogen in an organic compound, the blue colour appears due to the formation of ....... (1) Q.5: For a reaction both enthalpy change and entropy change are positive. Under what conditions the reaction will be spontaneous ? (1)
Q.6; (i) How many subshells are associated with n=4?
- How many electrons will be present in the subshells having
m<sub>s</sub> value of -1/2 for n=4 ? <math>(1+1)</math>
W BI EC
Q.7: (i) Define electron gain enthalpy .
- Why is the electron gain enthalpy of chlorine more negative
than fluorine ? <math>(1+1)</math>
Q.8: (i) In what group of the periodic table the element will found
having electronic configuration: [Xe] 4f14 5d4 6s2
- Why first ionization enthalpy of nitrogen is more than
oxygen? <math>(1+1)</math>
Q.9: Which out of NH3 and NF3 has higher dipole moment and why ?
(2) 1.0.T.91
[P.T.O.]
Frequently asked questions
What is this document?
This is the CBSE Class 11 Chemistry Previous Year Question Paper from 2015, Set 1, for board exam practice.
What is the duration and marks for this paper?
The exam is for 3 hours and carries a total of 70 marks.
How can solving this previous year paper help students?
Solving this previous year question paper helps students understand the board exam pattern, identify important topics, and improve their scoring potential.
What types of questions are included?
The paper includes very short answer, short answer, value-based, and long answer type questions.
Are calculators allowed for this exam?
No, calculators are not allowed, but students may use log tables if necessary.
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