CBSE Class 12 Chemistry 2015 Previous Year Question Paper (Set-1)
This is the CBSE Class 12 Chemistry (Theory) 2015 Main Exams Delhi-Set-1 previous year question paper. The paper is divided into sections with varying marks: questions 1-5 are very short answer type (1 mark each), questions 6-10 are short answer type (2 marks each), questions 11-22 are also short answer type (3 marks each), question 23 is value-based (4 marks), and questions 24-26 are long answer type (5 marks each). The total maximum marks for the exam are 70, and the allotted time is 3 hours. A 15-minute reading time is provided before the exam begins. Solving this board question paper helps students understand the exam pattern, question types, and marks distribution, crucial for effective preparation and scoring well in the CBSE board examinations.
Quick info
| Board | CBSE |
|---|---|
| Class | 12 |
| Subject | Chemistry |
| Session | 2015 |
| Language | Hindi |
| Type | Previous Year Question Paper |
| Exam type | Board Exam |
Paper pattern
The Chemistry (Theory) paper has a total of 70 marks and is to be completed in 3 hours. It includes very short answer, short answer, value-based, and long answer questions distributed across 26 questions.
Topics covered
Paper topics
- Basicity of H3PO4
- IUPAC Nomenclature
- SN2 Reaction
- Chemical Kinetics
- Coordination Compounds
- Organic Chemistry
- Electrochemistry
- Solid State
- Solutions
- P-block Elements
- D-block Elements
- Haloalkanes and Haloarenes
- Alcohols, Phenols and Ethers
- Aldehydes, Ketones and Carboxylic Acids
- Amines
- Biomolecules
- Polymers
- Chemistry in Everyday Life
Important topics
- Basicity of H3PO4
- SN2 Reaction Mechanism
- IUPAC Naming
- Coordination Compounds
- Organic Reaction Mechanisms
- Value-Based Questions
PDF preview
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Question paper text
SET – 1
Series: SSO/1
रोल नं.
Roll No.
कोड नं. Code No. 56/1/1/D
परीक्षार्थी कोड को उत्तर-पुस्तिका के मुख-पृष्ट
पर अवश्य लिखें ।
Candidates must write the Code on
the title page of the answer-book.
कृपया जाँच कर लें कि इस प्रश्न-पत्र में मुद्रित पृष्ट 12 हैं।
प्रश्न-पत्र में दाहिने हाथ की ओर दिए गए कोड नम्बर को छात्र उत्तर-पुस्तिका के मुख-पृष्ट पर लिखें ।
कृपया जाँच कर लें कि इस प्रश्न-पत्र में 26 प्रश्न हैं।
कृपया प्रश्न का उत्तर लिखना शुरू करने से पहले, प्रश्न का क्रमांक अवश्य लिखें।
इस प्रश्न-पत्र को पढ़ने के लिए 15 मिनट का समय दिया गया है । प्रश्न-पत्र का वितरण पूर्वाह्न में 10.15 बजे किया जायेगा । 10.15 बजे से 10.30 बजे तक छात्र केवल प्रश्न-पत्र पढ़ेंगे और इस अवधि के दौरान वे उत्तर- पुस्तिका पर कोई उत्तर नहीं लिखेंगे ।
Please check that this question paper contains 12 printed pages.
Code number given on the right hand side of the question paper should be written on the title page of the answer-book by the candidate.
Please check that this question paper contains 26 questions.
Please write down the Serial Number of the question before attempting it.
15 minutes time has been allotted to read this question paper. The question paper will be distributed at 10.15 a.m. From 10.15 a.m. to 10.30 a.m., the students will only read the question paper and will not write any answer on the answer-book during this period.
रसायन विज्ञान (सैद्धान्तिक) CHEMISTRY (Theory)
निर्धारित समय : 3 घण्टे]
[अधिकतम अंक : 70
Time allowed: 3 hours]
[ Maximum Marks : 70
सामान्य निर्देश :
(i) सभी प्रश्न अनिवार्य हैं ।
- प्रश्न-संख्या <math>\bm{1}</math> से <math>\bm{5}</math> तक अति लघु-उत्तरीय प्रश्न हैं । प्रत्येक प्रश्न के लिए <math>\bm{1}</math> अंक निर्धारित है ।
- प्रश्न-संख्या 6 से 10 तक लघु-उत्तरीय प्रश्न हैं । प्रत्येक प्रश्न के लिए 2 अंक निर्धारित हैं ।
- प्रश्न-संख्या 11 से 22 तक भी लघु-उत्तरीय प्रश्न हैं । प्रत्येक प्रश्न के लिए 3 अंक निर्धारित हैं ।
- प्रश्न-संख्या 23 मूल्याधारित प्रश्न है और इसके लिए 4 अंक निर्धारित हैं ।
- प्रश्न-संख्या 24 से 26 दीर्घ-उत्तरीय प्रश्न हैं । प्रत्येक प्रश्न के लिए 5 अंक हैं ।
- यदि आवश्यक हो तो लॉग टेबल का उपयोग कर सकते हैं । कैलकुलेटर के उपयोग की अनुमति नहीं है ।
56/1/1/D 1 [P.T.O.
General Instructions:
- All questions are compulsory.
- Q. no. 1 to 5 are very short answer questions and carry 1 mark each.
- Q. no. 6 to 10 are short answer questions and carry 2 marks each.
- Q. no. 11 to 22 are also short answer questions and carry 3 marks each.
- Q. no. 23 is a value based question and carry 4 marks.
- Q. no. 24 to 26 are long answer questions and carry 5 marks each.
- Use log tables if necessary, use of calculators is not allowed.
- H<sub>3</sub>PO<sub>4</sub> की क्षारकता क्या है ? 1
What is the basicity of <math>H_3PO_4</math>?
- दिये गये यौगिक का आई.यू.पी.ए.सी. नाम लिखिए :
1 <math>NO_2</math> OH
<math>NO_2</math>
Write the IUPAC name of the given compound:
- निम्न युग्म में कौन <math>S_N^2</math> अभिक्रिया अधिक तीव्रता से करेगा और क्यों ?
1 CH<sub>3</sub> CH<sub>3</sub> – CH<sub>2</sub> – Br तथा CH<sub>3</sub> – C – CH<sub>3</sub> Br
Which would undergo <math>S_N^2</math> reaction faster in the following pair and why?
<math>CH_3</math> <math>CH_3 - CH_2 - Br</math> and <math>CH_3 - C - CH_3</math> Br 2 56/1/1/D
Frequently asked questions
What is this document?
This is the official CBSE Class 12 Chemistry 2015 Main Exams Delhi-Set-1 previous year board question paper.
What is the total marks and duration for the exam?
The Chemistry exam is for a maximum of 70 marks and has a duration of 3 hours.
How are the questions structured in this paper?
The paper consists of 26 questions categorized into very short answer (1 mark), short answer (2 and 3 marks), value-based (4 marks), and long answer (5 marks) types.
Why is solving previous year question papers important?
Solving previous year question papers helps students understand the exam pattern, marking scheme, and difficulty level, thereby improving their preparation and confidence for the board exams.
Can I use a calculator for this paper?
No, the use of calculators is not allowed for this Chemistry (Theory) paper. Log tables can be used if necessary.
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