CBSE Class 12 Chemistry 2018 Previous Year Question Paper (Set-3)
This is the CBSE Class 12 Chemistry (Theory) 2018 Main Exams Previous Year Question Paper, Set-3. The paper is for the 2018 examination and is in Hindi. It consists of 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, each carrying 5 marks. The total marks for the paper are 70, and students are given 3 hours to complete it. A 15-minute reading time is provided before the exam begins. Solving this previous year paper helps students understand the exam pattern, question types, and marking scheme, which is crucial for effective preparation and scoring well in the board exams.
Quick info
| Board | CBSE |
|---|---|
| Class | 12 |
| Subject | Chemistry |
| Session | 2018 |
| Language | Hindi |
| Type | Previous Year Question Paper |
| Exam type | Board Exam |
Paper pattern
The paper contains 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, with a duration of 3 hours.
Topics covered
Paper topics
- Coordination Compounds
- Solid State
- Chemical Kinetics
- Electrochemistry
- Surface Chemistry
- p-Block Elements
- d- and f-Block Elements
- Coordination Compounds
- Organic Chemistry
- Haloalkanes and Haloarenes
- Organic Compounds Containing Oxygen
- Organic Compounds Containing Nitrogen
- Biomolecules
- Polymers
- Chemistry in Everyday Life
Important topics
- Coordination Number and Oxidation State
- Non-stoichiometric Compounds
- Rate of Reaction
- Factors Affecting Rate of Reaction
- Electrochemical Cells
- Electrolysis
- Colloidal Solutions
- Properties of Colloids
- Reactions of Alcohols
- Phenols
- Ethers
- Aldehydes
- Ketones
- Carboxylic Acids
- Amines
- Diazonium Salts
- Carbohydrates
- Proteins
- Vitamins
- Nucleic Acids
- Polymers
- Medicinal Chemistry
PDF preview
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Question paper text
SET-3
Series SGN
Roll No.
कोड नं.
Code No.
रोल नं. 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
Maximum Marks: 70
Time allowed: 3 hours
अधिकतम अंक : 70
P.T.O.
56/3
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 अनुमति 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 carries 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.
1
- संकुल [Pt(en)2Cl2] में प्लैटिनम की उपसहसंयोजन संख्या और ऑक्सीकरण अवस्था लिखिए। Write the coordination number and oxidation state of Platinum in the complex <math>[Pt(en)_2Cl_2]</math>.
- <math>{\rm FeO}</math> का विश्लेषण दर्शाता है कि इसका <math>{\rm Fe}_{0.95}{\rm O}</math> सूत्र सहित नॉन-स्टॉइकियोमीट्री संघटन होता है । कारण दीजिए ।
1 Analysis shows that FeO has a non-stoichiometric composition with formula <math>Fe_{0.95}O</math>. Give reason. 2 56/3
Frequently asked questions
What is this document?
This is the CBSE Class 12 Chemistry 2018 Main Exams Previous Year Question Paper (Set-3) for board exam practice.
What is the subject and class?
The subject is Chemistry (Theory) for Class 12.
What is the year and set of this paper?
This is the 2018 Main Exams paper, Set-3.
How does solving this previous year paper help students?
Solving previous year question papers helps students understand the board pattern, question types, and marking scheme, improving their exam preparation and potential scores.
What is the structure of the Chemistry 2018 paper?
The paper has 26 questions with marks ranging from 1 to 5, totaling 70 marks, to be completed in 3 hours.
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