CBSE Class 12 Chemistry (Theory) Previous Year Board Question Paper 2015 Set-2
This is the CBSE Class 12 Chemistry (Theory) Previous Year Board Question Paper from the 2015 Main Exams, Delhi-Set-2. The paper is for the Hindi medium and carries a maximum of 70 marks, with a duration of 3 hours. It includes very short answer questions (1 mark each) from Q.1 to Q.5, short answer questions carrying 2 marks each from Q.6 to Q.10, short answer questions carrying 3 marks each from Q.11 to Q.22, a value-based question for 4 marks (Q.23), and long answer questions carrying 5 marks each from Q.24 to Q.26. Candidates are allowed to use log tables but not calculators. Solving this previous year's question paper is crucial for students to understand the exam pattern, marking scheme, and types of questions asked, thereby improving their preparation and performance in the board exams.
Quick info
| Board | CBSE |
|---|---|
| Class | 12 |
| Subject | Chemistry |
| Session | 2015 |
| Language | Hindi |
| Type | Previous Year Question Paper |
| Exam type | Board Exam |
Paper pattern
The paper consists of questions from serial number 1 to 5 (1 mark each), 6 to 10 (2 marks each), 11 to 22 (3 marks each), 23 (4 marks), and 24 to 26 (5 marks each). The total marks are 70 and the time allowed is 3 hours.
Topics covered
Paper topics
- SN2 Reaction
- Colloidal Sol Coagulation
- Crystal Lattice
- Tetrahedral Voids
Important topics
- SN2 Reaction
- Colloidal Sol Coagulation
- Crystal Lattice
- Tetrahedral Voids
PDF preview
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Question paper text
SET - 2
Series: SSO/1
रोल नं.
Roll No.
कोड नं. Code No. 56/1/2/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 अनुमित नहीं है ।
56/1/2/D 1 [P.T.O.
General Instructions:
(i) 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.
- निम्न युग्म में कौन <math>S_N 2</math> अभिक्रिया अधिक तीव्रता से करेगा और क्यों ?
1 <math>CH_3</math> <math>CH_3 - CH_2 - Br</math> तथा <math>CH_3 - C - CH_3</math> 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
- <math>\mathrm{BaC}l_2</math> और <math>\mathrm{KC}l</math> में से कौन ऋणात्मक चार्ज वाले कोलाइडी सॉल का स्कंदन अधिक प्रभावशाली ढंग से करेगा ? कारण दीजिए ।
1 Out of BaCl<sub>2</sub> and KCl, which one is more effective in causing coagulation of a negatively charged colloidal Sol? Give reason.
- उस यौगिक का सूत्र क्या होगा जिसमें Y तत्त्व ccp जालक बनाता है और X चतुष्फलकीय रिक्ति का 1/3वाँ भाग घेरता है ?
1 What is the formula of a compound in which the element Y forms ccp lattice and atoms of X occupy 1/3<sup>rd</sup> of tetrahedral voids?
56/1/2/D 2
Frequently asked questions
What is this document?
This is the CBSE Class 12 Chemistry (Theory) Previous Year Board Question Paper from the 2015 Main Exams, Set-2.
What is the total marks and duration for the Chemistry paper?
The Chemistry paper has a maximum of 70 marks and the allowed time is 3 hours.
What types of questions are included in the paper?
The paper includes very short answer, short answer, value-based, and long answer questions.
Can I use a calculator during the exam?
No, the use of calculators is not allowed, but log tables can be used if necessary.
How does solving previous year papers help?
Solving previous year question papers helps students understand the board pattern, question types, and marking scheme, improving their exam preparation and performance.
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