CBSE Class 11 Chemistry Previous Year Question Paper 2019 Set 2
This is the CBSE Class 11 Chemistry Previous Year Question Paper from 2019, Set 2. The exam paper has a total duration of 3 hours and is marked for a maximum of 70 marks. It includes questions of varying marks: Q1-5 are 1 mark each, Q6-10 are 2 marks each, Q11-23 are 3 marks each, Q24 is 4 marks, and Q25-27 are 5 marks each. The paper covers topics such as chemical bonding (BF3 acting as an acid), nomenclature, electronegativity, redox reactions, gas laws, solutions, VSEPR theory, organic reactions, chemical equilibrium, environmental chemistry (acid rain, greenhouse effect), and molar mass calculations. Solving this previous year's board question paper is crucial for students to understand the exam pattern, difficulty level, and important topics, thereby enhancing their preparation for the final CBSE board examinations.
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Quick info
| Board | CBSE |
|---|---|
| Class | 11 |
| Subject | Chemistry |
| Session | 2019 |
| Language | English |
| Type | Previous Year Question Paper |
| Exam type | Board Exam |
Paper pattern
The paper is divided into questions carrying 1, 2, 3, 4, and 5 marks, with a total duration of 3 hours and a maximum mark of 70.
Topics covered
Paper topics
- Chemical Bonding
- Nomenclature
- Electronegativity
- Redox Reactions
- Gas Laws
- Solutions
- VSEPR Theory
- Organic Reactions
- Chemical Equilibrium
- Environmental Chemistry
- Molar Mass Calculation
Important topics
- BF3 as an acid
- IUPAC naming
- Electronegativity order
- Disproportionation reaction
- PV vs P slope
- Molality calculation
- VSEPR shapes (ClF6, SF4)
- Wurtz reaction
- Elimination reaction
- PCl5 dissociation
- Acid rain
- Greenhouse effect
- Molar mass of gaseous oxide
PDF preview
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Question paper text
CBSE Question Paper 2019 (Set-2) Class 11 Chemistry MPVM Gangagurukulam
Duration: 3 hrs.
M.Marks: 70
General Instructions:
Q1 - 5 are of 1 marks each.
Q6 - 10 are of 2 marks each.
Q11-23 are of 3 marks each.
- Q24 is of 4 marks.
Q25 - 27 are of 5 marks each.
BF<sub>3</sub> does not have proton but still acts as an acid. Why?
Write the IUPAC name of the following compound: Br - CH<sub>2</sub>-CH=CH-COOH.
Arrange the following elements in the increasing order of electronegativity Si, C, P and N.
- Give one example of disproportionation reaction.
- What is the slope between PV and P at constant temperature?
- What will be the molality of the solution containing 18.25 g of HCl gas in 500 g of water?
On the basis of VSEPR theory, explain the shape of ClF<sub>6</sub> and SF<sub>4</sub>.
Complete the following reactions:
dry ether L 2CH<sub>3</sub>Br + 2Na ——→
alc.ROH ii CH2CH2CH2CI -----
- The equilibrium constant <math>K_D</math> for the thermal dissociation of <math>PCl_S</math> at 200° C is 1.6 atm. What is the pressure at which it is 50% dissociated?
Write short notes on:
- Acid rain
Green house effect
- The density of certain gaseous oxide at 1.5 bar pressure at 10°C is same as that of dioxygen at 20° C & 4.5 bar pressure. Calculate the molar mass of gaseous oxide.
1/3
CBSE Question Paper 2019 (Set-2) Class 11 Chemistry MPVM Gangagurukulam
Duration: 3 hrs.
M.Marks: 70
General Instructions:
Q1 - 5 are of 1 marks each.
Q6 - 10 are of 2 marks each.
Q11-23 are of 3 marks each.
- Q24 is of 4 marks.
Q25 - 27 are of 5 marks each.
BF<sub>3</sub> does not have proton but still acts as an acid. Why?
- Write the IUPAC name of the following compound: Br - CH<sub>2</sub>-CH=CH-COOH.
Arrange the following elements in the increasing order of electronegativity Si, C, P and N.
Give one example of disproportionation reaction.
- What is the slope between PV and P at constant temperature?
- What will be the molality of the solution containing 18.25 g of HCl gas in 500 g of water?
On the basis of VSEPR theory, explain the shape of ClF<sub>6</sub> and SF<sub>4</sub>.
Complete the following reactions:
dry ether L 2CH<sub>3</sub>Br + 2Na ——→
alc.ROH
- CH<sub>2</sub>CH<sub>2</sub>CH<sub>2</sub>Cl ──→
- The equilibrium constant <math>K_D</math> for the thermal dissociation of <math>PCl_S</math> at 200° C is 1.6 atm. What is the pressure at which it is 50% dissociated?
Write short notes on:
- Acid rain
- Green house effect
- The density of certain gaseous oxide at 1.5 bar pressure at 10°C is same as that of dioxygen at 20° C & 4.5 bar pressure. Calculate the molar mass of gaseous oxide.
1/3
Frequently asked questions
What is this document?
This is a CBSE Class 11 Chemistry Previous Year Question Paper from 2019, Set 2, designed for board exam practice.
What is the total mark and duration for this paper?
The paper carries a total of 70 marks and has a duration of 3 hours.
What types of questions are included?
The paper includes questions ranging from 1 mark to 5 marks, covering various topics in Chemistry.
How does solving this previous year paper help?
Solving this previous year question paper helps students understand the exam pattern, question types, and marking scheme, improving their preparation and confidence.
What subjects are covered in this paper?
This paper specifically covers topics from the CBSE Class 11 Chemistry syllabus.
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