UKPSC 2015 Chemistry Paper (OCR Repair) – Forest Ranger Officer
- Year 2015
- Conducted By Uttarakhand Public Service Commission (UKPSC)
- Questions 0
- Maximum Marks 200
- Duration Three Hours
- Languages Hindi & English
Exam Details
| Detail | Information |
|---|---|
| Examination | Chemistry Main Examination |
| Year | 2015 |
| Conducting Body | Uttarakhand Public Service Commission (UKPSC) |
| Paper | Forest Ranger Officer Exam |
| Subject | Chemistry |
| Duration | Three Hours |
| Maximum Marks | 200 |
| Number of Questions | 0 |
| Question Type | Mixed |
This dataset corresponds to the Uttarakhand UKPSC Forest Ranger Officer Chemistry paper (2015). Page 1 contains the exam header, two-section structure (A and B), and general instructions. Page 2 presents repaired OCR content including nuclear/atomic reaction items, Heisenberg principle references, and various chemistry topics: binding energy per nucleon in carbon-12, electronegativity and ionic radii trends, ionic enthalpy, amphoteric oxides, and the Be–Al diagonal relationship. The combined content indicates focus areas such as atomic structure, nuclear reactions, periodic trends, and oxide behavior. The SEO-backed metadata, keywords, and structured FAQ aim to improve discoverability for aspirants and researchers reviewing UKPSC chemistry papers from 2015.
Major Topics Covered
- Heisenberg's Uncertainty Principle
- Nuclear binding energy
- Binding energy per nucleon
- Atomic and nuclear equations
- Symbolic notation in nuclear reactions
- Electronegativity
- Ionic radii
- Ionization energy
- Electron affinity
- Oxides and amphoteric behavior
- Be–Al diagonal relationship
- Primitive quantum concepts
- Sectional examination pattern
- OCR repair concepts
- Two-section chemistry exam format
- Section A and B structure
- Balanced chemistry/physics notation
- Reaction stoichiometry
- Atomic structure basics
- General chemistry review
Why This Paper is Important
- Useful for Chemistry Main Examination preparation
- Helps understand the latest exam pattern
- Useful for practice and self-assessment
- Covers frequently asked General Studies topics
- Helpful for analysing question trends
Related Resources
Instructions
- पूर्णांक : 200 [Maximum Marks: 200 Time allowed: Three Hours] इस प्रश्न-पत्र में दो खण्ड ‘अ’ तथा ‘ब’ हैं । प्रत्येक खण्ड में चार प्रश्न हैं । किन्हीं पाँच प्रश्नों के नोटः (i) उत्तर दीजिए, प्रत्येक खण्ड से कम से कम दो प्रश्न अवश्य होने चाहिए । (ii) सभी प्रश्नों के अंक समान हैं । (iii) एक प्रश्न के सभी भागों का उत्तर अनिवार्यत: एक साथ दिया जाय ।
- Note: This question paper has two sections 'A' and 'B'.
- Every section has four \left( \nu \right) questions, attempt any five questions.
- Atleast two questions should be from every section.
- (ii) All questions carry equal marks.
- (iii) All the parts of question must be answered together. खण्ड – ‘अ’ SECTION - 'A' हाइजेनबर्ग के अनिश्चितता के सिद्धान्त का वर्णन करें ।
- (i) 8 ^{+2}_{-6}C के कुल बंधन उर्जा तथा प्रति न्यूक्लियान बंधन उर्जा ज्ञात करें ।
- (iii) दिये गये तत्त्वों में से चुनें: 8 Cl, Br, F, O, Al, C, Li और Cs.
Questions (page 2)
Formatted from page 2 OCR. Download the PDF for the full paper.
التوافع الأكلوبونية المرارين والمراري والمرارية (iv) निम्न समीकरणों में 'A', 'X'' D' और 'E' के संकेत क्या होंगे ?
8 (a) 147N + 42He → 178O + A (b) 11H + 37Li → 2X (c) (35/17)Cl + (1/0)n → (35/16)S + D (d) 105B + 21H → 116C + E निम्न को व्याख्या कोजिए : (v) 8 Be और Al एक समान प्रतिक्रियाएँ दिखाते हैं । (a) B के प्रथम आयनन विभव का मान Be से कम होता है। (b) अक्रिय गैसों के परमाण त्रिज्या का आकार बड़ा होता है । (c) CI की इलेक्ट्रान बंधुता का मान F से अधिक होता है । (d) Explain Heisenberg Uncertainty Principle. (i) Calculate the binding energy of the nucleon in 126C per nucleon. (ii) (iii) From the given elements choose: Cl, Br, F, O, Al, C, Li and Cs. Smallest electro-negative atom. (a) Which element have smallest ionic enthalpy? (b) (c) Which element have lowest ionic radii? (d) Oxide of which element is amphoteric. (iv) What do the symbol 'A', 'X', 'D' and 'E' stand for in the following equations ? (a) 147N + 42He → 178O + A (b) 11H + 37Li → 2X (c) (35/17)Cl + (1/0)n → (35/16)S + D (d) 105B + 21H → 116C + E Explain the following: (v) Be and Al give similar reactions. (a) 1st ionization potential of B is less than Be. (b) Atomic radius of Inert gases are large. (c) The electron affinity of Cl is greater than F. (d) VRA-07 \mathbfz
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Frequently asked questions
What is the exam name and year?
Chemistry Main Examination, Uttarakhand Public Service Commission (UKPSC) Forest Ranger Officer Exam, 2015.
What is the maximum marks and duration?
Maximum marks: 200. Time allowed: Three Hours.
How many sections and how many questions per section?
Two sections: A and B. Each section contains four questions.
How many questions must a student attempt and from which sections?
A candidate must attempt five questions in total, with at least two questions from each section.
Are there any special instructions about answering parts of a question?
Yes. All parts of a question must be answered together.
What topics are covered in this paper based on the OCR content?
Topics include Heisenberg Uncertainty Principle, nuclear binding energy per nucleon, electronegativity, ionic radii, ionic enthalpy, oxide amphotericity, and reactions involving A, X, D, E symbols in nuclear equations.