CBSE Class 12 Chemistry 2015 Previous Year Question Paper (Set-1)
This is the CBSE Class 12 Chemistry (Theory) 2015 Main Exams Ajmer-Set-1 previous year question paper. The exam is for 3 hours and carries a maximum of 70 marks. The paper contains 26 questions divided into different sections. Questions 1 to 5 are very short answer type carrying 1 mark each. Questions 6 to 10 are short answer type carrying 2 marks each. Questions 11 to 22 are also short answer type carrying 3 marks each. Question 23 is a value-based question worth 4 marks, and questions 24 to 26 are long answer type questions carrying 5 marks each. Calculators are not permitted, but log tables can be used if necessary. Solving this board question paper is crucial for students to understand the exam pattern, marking scheme, and important topics for effective preparation.
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 has 26 questions divided into very short answer (1 mark), short answer (2 and 3 marks), value-based (4 marks), and long answer (5 marks) types. The total marks are 70 and the duration is 3 hours.
Topics covered
Paper topics
- Coagulation of negative sol
- Crystal lattice and voids
Important topics
- Coagulation
- Crystal structure
PDF preview
Read page by page below. PDF is streamed from the official NCERT website — no download button on this page.
Question paper text
SET-1
Series SSO
रोल नं.
Roll No.
कोड नं. 56/1/A
परीक्षार्थी कोड को उत्तर-पुस्तिका के मुख-पृष्ठ
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 पृष्ठ 15 हैं।
प्रश्न-पत्र में दाहिने हाथ की ओर दिए गए कोड नम्बर को छात्र उत्तर-पुस्तिका के मुख-पृष्ठ 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 जाएगा । 10.15 बजे से 10.30 बजे तक छात्र केवल प्रश्न-पत्र को पढ़ेंगे और इस अवधि के दौरान वे उत्तर-पुस्तिका पर कोई उत्तर नहीं लिखेंगे ।
Please check that this question paper contains 15 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 minute 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 read the question paper only and will not write any answer on the answer-book during this period.
रसायन विज्ञान (सैद्धान्तिक)
CHEMISTRY (Theory)
निर्धारित समय : 3 घण्टे
Time allowed: 3 hours
अधिकतम अंक : 70
Maximum Marks: 70
56/1/A
P.T.O. 1
सामान्य निर्देश:
- सभी प्रश्न अनिवार्य हैं ।
- प्रश्न संख्या 1 से 5 तक अति लघु-उत्तरीय प्रश्न हैं और प्रत्येक प्रश्न के लिए 1 अंक है।
- प्रश्न संख्या 6 से 10 तक लघु-उत्तरीय प्रश्न हैं और प्रत्येक प्रश्न के लिए 2 अंक हैं।
- प्रश्न संख्या 11 से 22 तक भी लघु-उत्तरीय प्रश्न हैं और प्रत्येक प्रश्न के लिए 3 अंक हैं।
- प्रश्न संख्या 23 मूल्याधारित प्रश्न है और इसके लिए 4 अंक हैं।
- प्रश्न संख्या 24 से 26 तक दीर्घ-उत्तरीय प्रश्न हैं और प्रत्येक प्रश्न के लिए 5 अंक हैं।
- यदि आवश्यकता हो, तो लॉग टेबलों का प्रयोग करें । कैल्कुलेटरों के उपयोग की अनुमित नहीं है ।
General Instructions:
- All questions are compulsory.
- Questions number 1 to 5 are very short answer questions and carry 1 mark each.
- Questions number 6 to 10 are short answer questions and carry 2 marks each.
- Questions number 11 to 22 are also short answer questions and carry 3 marks each.
- Question number 23 is a value based question and carry 4 marks.
- Questions number 24 to 26 are long answer questions and carry 5 marks each.
- Use log tables, if necessary. Use of calculators is not allowed.
- <math>AlCl_3</math> और NaCl में से, कौन-सा ऋणात्मक सॉल को स्कंदित करने में अधिक प्रभावशाली है और क्यों ?
1 Out of AlCl<sub>3</sub> and NaCl, which is more effective in causing coagulation of a negative sol and why?
- उस यौगिक का सूत्र लिखिए जिसमें Y तत्त्व ccp जालक बनाता है और X के परमाणु
चतुष्फलकीय रिक्तियों का 1/3वाँ भाग घेरते हैं। 1
Write 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/A 2
Frequently asked questions
What is the purpose of solving previous year question papers for CBSE Class 12 Chemistry?
Solving previous year question papers helps students understand the exam pattern, marking scheme, and difficulty level, leading to better preparation and improved scores.
What is the total marks and duration for the CBSE Class 12 Chemistry exam?
The total marks for the CBSE Class 12 Chemistry exam are 70, and the duration is 3 hours.
Are calculators allowed in the CBSE Class 12 Chemistry exam?
No, calculators are not allowed in the CBSE Class 12 Chemistry exam. However, students can use log tables if needed.
How are the questions structured in the CBSE Class 12 Chemistry 2015 paper?
The paper includes very short answer, short answer, value-based, and long answer questions, with varying marks assigned to each type.
What is the significance of Set-1 in the question paper title?
Set-1 indicates a specific version of the question paper distributed for the examination, ensuring fairness and preventing malpractice.
Content reviewed by the NCERT Help team. Editorial Team and update policy
Question Papers PDF on NCERT Help. URL unchanged for search indexing.