CBSE Class 12 Chemistry 2017 Previous Year Board Question Paper (Delhi-Set-2)
This is the CBSE Class 12 Chemistry 2017 Main Exams Delhi-Set-2 Previous Year Question Paper. The exam is for a maximum of 70 marks and has a duration of 3 hours. The paper consists of very short-answer questions (1 mark each) from Q1 to Q5, short-answer questions (2 marks each) from Q6 to Q10, more short-answer questions (3 marks each) from Q11 to Q22, a value-based question (4 marks) as Q23, and long-answer questions (5 marks each) from Q24 to Q26. Calculators are not permitted, but log tables may be used if necessary. Solving this board question paper is crucial for students to understand the exam pattern, identify important topics, and enhance their preparation for the upcoming board examinations.
Quick info
| Board | CBSE |
|---|---|
| Class | 12 |
| Subject | Chemistry |
| Session | 2017 |
| Language | Hindi |
| Type | Previous Year Question Paper |
| Exam type | Board Exam |
Paper pattern
The exam paper has a total of 70 marks and a duration of 3 hours. It is divided into very short-answer (1 mark), short-answer (2 and 3 marks), value-based (4 marks), and long-answer (5 marks) questions.
Topics covered
Paper topics
- Physisorption
- Chemisorption
- 2,4-dinitrochlorobenzene structure
- Reaction order
- IUPAC nomenclature
- Chromium oxo-anion
- Acetic acid dissociation
- Molar conductivity
- Electrolyte conductivity
Important topics
- Adsorption
- Organic Chemistry Nomenclature
- Chemical Kinetics
- Coordination Compounds
- Electrochemistry
PDF preview
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Question paper text
SET – 2
Series : GBM/1
कोड नं.
रोल नं.
Roll No.
Code No.
56/1/2
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 पृष्ठ 11 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 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 11 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
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 और प्रत्येक प्रश्न के लिए <math>\bm{1}</math> 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 । कैलकुलेटरों के उपयोग की अनुमित नहीं है ।
56/1/2 1 [P.T.O.
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.
- भौतिक अधिशोषण और रासायनिक अधिशोषण के बीच एक समानता लिखिए । 1 Write one similarity between Physisorption and Chemisorption.
1
- 2,4-डाइनाइट्रोक्लोरोबेन्ज़ीन की संरचना लिखिए । Write the structure of 2,4-dinitrochlorobenzene.
1
- एक रासायनिक अभिक्रिया <math>R \longrightarrow P</math> के लिए अर्धायु <math>(t_{1/2})</math> को अभिक्रियक की प्रारंभिक सांद्रता पर निर्भर नहीं करते पाया गया । अभिक्रिया की कोटि क्या है ? For a reaction R <math>\longrightarrow</math> P, half-life <math>(t_{1/2})</math> is observed to be independent of the initial concentration of reactants. What is the order of reaction?
- निम्नलिखित यौगिक का IUPAC नाम लिखिए:
CH<sub>3</sub>NHCH(CH<sub>3</sub>)<sub>2</sub>
Write IUPAC name of the following compound:
CH<sub>3</sub>NHCH(CH<sub>3</sub>)<sub>2</sub>
- क्रोमियम (Cr) के एक ऑक्सी-ऋणायन का सूत्र लिखिए जिसमें यह ऑक्सीकरण अवस्था अपनी वर्ग-संख्या के
बराबर प्रदर्शित करता है । 1
Write the formula of an oxo-anion of Chromium (Cr) in which it shows the oxidation state equal to its group number.
- ऐसीटिक अम्ल की वियोजन मात्रा <math>(\alpha)</math> का परिकलन कीजिए यदि इसकी मोलर चालकता <math>(\wedge_m)</math> का मान 39.05 S cm<sup>2</sup>mol<sup>-1</sup> ਵੈ ।
2 दिया है : <math>\lambda^{o}(H^{+}) = 349.6 \text{ S cm}^{2} \text{ mol}^{-1}</math>
<math>\lambda^{o}(CH_{3}COO^{-}) = 40.9 \text{ S cm}^{2} \text{ mol}^{-1}</math>
Calculate the degree of dissociation (<math>\alpha</math>) of acetic acid if its molar conductivity (<math>\wedge_m</math>) is <math>39.05 \text{ S cm}^2\text{mol}^{-1}</math>.
Given <math>\lambda^{o}(H^{+}) = 349.6 \text{ S cm}^{2} \text{ mol}^{-1}</math> and <math>\lambda^{o}(CH_{3}COO^{-}) = 40.9 \text{ S cm}^{2} \text{ mol}^{-1}</math> 2 56/1/2
Frequently asked questions
What is this document?
This is the CBSE Class 12 Chemistry 2017 Previous Year Board Question Paper (Delhi-Set-2) for students to practice and prepare for their board exams.
What is the total marks and duration for the Chemistry exam?
The Chemistry exam is for a maximum of 70 marks and the allowed time is 3 hours.
How are the questions structured in this paper?
The paper includes very short-answer, short-answer, value-based, and long-answer questions, with varying marks assigned to each type.
Can I use a calculator during the exam?
No, the use of calculators is not allowed. However, you may use log tables if necessary.
How does solving previous year papers help?
Solving previous year question papers helps students understand the board pattern, identify important topics, and improve their marks in the final examination.
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