CBSE Class 12 Chemistry 2017 Previous Year Question Paper (Delhi Set-3)

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This is the CBSE Class 12 Chemistry 2017 previous year board question paper for the Delhi Set-3. The exam paper is for the Theory section and is designed for a maximum of 70 marks, with a duration of 3 hours. It contains a total of 26 questions divided into different types: very short-answer questions (1 mark each) from Q1 to Q5, short-answer questions (2 marks each) from Q6 to Q10, 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. General instructions include that all questions are compulsory and the use of calculators is not permitted, though log tables may be used if necessary. Solving this previous year question paper is crucial for students to understand the exam pattern, marking scheme, and important topics, thereby enhancing their preparation and performance in the board exams.

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Quick info

BoardCBSE
Class12
SubjectChemistry
Session2017
LanguageHindi
TypePrevious Year Question Paper
Exam typeBoard Exam

Paper pattern

The paper consists of 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 time allowed is 3 hours.

Topics covered

Paper topics

  • Catalyst effect on Gibbs energy and activation energy
  • Physisorption and Chemisorption
  • Manganese oxo-anions
  • Organic compound structures and nomenclature
  • Clemmensen reduction
  • Cannizzaro reaction

Important topics

  • Catalysis
  • Adsorption
  • Coordination Compounds
  • Organic Reaction Mechanisms
  • Nomenclature and Structure of Organic Compounds

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Question paper text

SET – 3

Series : GBM/1

रोल नं.

कोड नं.

Roll No.

Code No.

56/1/3

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।

  1. 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 ।
  2. प्रश्न-संख्या 6 से 10 तक लघु-उत्तरीय प्रश्न हैं और प्रत्येक प्रश्न के लिए 2 अंक हैं ।
  3. प्रश्न-संख्या 11 से 22 तक भी लघु-उत्तरीय प्रश्न हैं और प्रत्येक प्रश्न के लिए 3 अंक हैं ।
  4. प्रश्न-संख्या 23 मूल्याधारित प्रश्न है और इसके लिए 4 अंक हैं।
  5. प्रश्न-संख्या 24 से 26 तक दीर्घ-उत्तरीय प्रश्न हैं और प्रत्येक प्रश्न के लिए 5 अंक हैं ।
  6. यदि आवश्यकता हो, तो लॉग टेबलों का प्रयोग करें । कैलकुलेटरों के उपयोग की अनुमित नहीं है ।

56/1/3 1 [P.T.O.

General Instructions:

  1. All questions are compulsory.
  2. Questions number 1 to 5 are very short-answer questions and carry 1 mark each.
  3. Questions number 6 to 10 are short-answer questions and carry 2 marks each.
  4. Questions number 11 to 22 are also short-answer questions and carry 3 marks each.
  5. Question number 23 is a value based question and carry 4 marks.
  6. Questions number 24 to 26 are long-answer questions and carry 5 marks each.
  7. Use log tables, if necessary. Use of calculators is not allowed.

1. उत्प्रेरक का क्या प्रभाव होता है

1

  1. गिब्ज़ ऊर्जा (ΔG) और
  2. अभिक्रिया की सिक्रयण ऊर्जा पर ?

What is the effect of catalyst on:

  1. Gibbs energy (<math>\Delta G</math>) and
  2. activation energy of a reaction?
  3. भौतिक अधिशोषण और रासायनिक अधिशोषण के बीच एक समानता लिखिए । 1 Write one similarity between Physisorption and Chemisorption.
  4. मैंगनीज (Mn) के एक ऑक्सी-ऋणायन का सूत्र लिखिए जिसमे यह ऑक्सीकरण अवस्था अपनी वर्ग-संख्या के बराबर प्रदर्शित करता है ।

Write the formula of an oxo-anion of Manganese (Mn) in which it shows the oxidation state equal to its group number.

4. 3-ब्रोमो-2-मेथिलप्रोप-1-ईन की संरचना लिखिए ।

1 Write the structure of 3-Bromo-2-methylprop-1-ene.

  1. निम्नलिखित यौगिक का IUPAC नाम लिखिए: 1

<math>(CH_3)_2N - CH_2CH_3</math>

Write IUPAC name of the following compound:

<math>(CH_3)_2N - CH_2CH_3</math>

  1. निम्नलिखित में होने वाली अभिक्रियाओं को लिखिए:

<math>1 + 1 = 2</math>

  1. क्लीमेन्सन अपचयन
  2. कैनिज़ारो अभिक्रिया
  3. Clemmensen reduction

Write the reactions involved in the following reactions:

  1. Cannizzaro reaction

2 56/1/3

Frequently asked questions

What is this document?

This is the official CBSE Class 12 Chemistry 2017 previous year board question paper (Delhi Set-3) for the Theory examination.

What is the structure of the question paper?

The paper has 26 questions categorized into very short-answer (1 mark), short-answer (2 and 3 marks), value-based (4 marks), and long-answer (5 marks) questions.

What is the total mark and time duration?

The Chemistry paper is for a maximum of 70 marks and has a duration of 3 hours.

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 for the board exams.

Are calculators allowed in the exam?

No, the use of calculators is not allowed, but students may use log tables if necessary.

Important links

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