If there is ambiguity in translation, which version is final?

The English version shall be treated as final.

Are there word limits in the questions?

Word limit in questions, where specified, should be adhered to.

What topics are covered in Section A of Page 2?

Section A includes questions on quantum mechanics, haemoglobin, molecular orbitals, and coordination chemistry.

What is EAN and where is it mentioned?

EAN (Effective Atomic Number) is requested for the complex CoCl3(en) in one of the questions.

What is a typical sub-part structure in these questions?

Sub-parts are indicated with (i), (ii), (a), (b), etc., and each sub-part carries marks as specified.

Chemistry Mains 2022 Question Paper (HCS Ex.Br) Haryana

Name: Chemistry Mains 2022 Question Paper (HCS Ex.Br) Haryana
Creator: Haryana Government
Keywords: Chemistry, HCS, Haryana, Question Paper, Mains, 2022, Ex.Br., Allied Services, Quantum mechanics, Haemoglobin, Molecular orbitals, Bond order, NO, NO+, NO-

Haryana Government Jobs Administrative / Civil Services 2022

Year 2022
Conducted By Haryana Government
Questions 8
Maximum Marks 200
Duration 3 Hours
Languages Hindi & English

Exam Details

Detail	Information
Examination	Chemistry
Year	2022
Conducting Body	Haryana Government
Paper	HCS (Ex.Br.) & Other Allied Services Mains Exam-2022
Subject	Chemistry
Duration	3 Hours
Maximum Marks	200
Number of Questions	8
Question Type	Mixed

The document provides the Chemistry question paper for the 2022 Haryana Government - HCS (Ex.Br.) & Other Allied Services Mains. It outlines the exam structure: two sections (A and B), four questions per section, with five questions to be answered in total. Questions are printed in English and Hindi, and translation ambiguity resolves to English. Time is 3 hours with a maximum of 200 marks. Page 2 contains Section A descriptive questions requiring written answers, including topics on quantum wave functions, haemoglobin structure, molecular orbitals, and coordination chemistry (CoCl3(en) complex). The OCR has been repaired to present individual questions clearly as Q1(i), Q1(ii) with subparts and marks (4 marks each).

Major Topics Covered

Quantum mechanics
Particle in a box
Wave function
Haemoglobin structure
Oxygen transport
Globin coordination
Molecular orbitals
Bonding and antibonding
NO, NO+, NO- bond order
Bond order concepts
CoCl3(en) complex
IUPAC naming
EAN (Effective Atomic Number)
Coordination number
AgCl precipitation test
AgNO3 reactivity
Multiplet subparts
Bilingual exam content
Two-section exam format
Hindi-English bilingual instruction

Why This Paper is Important

Useful for Chemistry 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

2022 Chemistry रसायन विज्ञान Time: 3 hours Maximum Marks: 200 समयः 3 घंटे अधिकतम अंकः 200

This paper is divided into two Sections, Section-A and Section-B. ये प्रश्नपत्र दो खंडों में विभाजित है, खंड-A और खंड-B ii.
Each Section contains four (4) questions. प्रत्येक खंड में चार प्रश्न है। Candidate has to attempt five questions in all. iii. परीक्षार्थी को पांच प्रश्नों का उत्तर लिखना है। Question Nos. 1 and 5 are compulsory and out of the remaining, THREE questions are to be iv. attempted choosing at least ONE question from each Section. प्रश्न संख्या 1 और 5 अनिवार्य है और शेष प्रश्नों में से किन्हीं तीन का उत्तर लिखना है, प्रत्येक खंड से एक प्रश्न को हल करना है। Word limit in questions, where specified, should be adhered to.
V. प्रश्नों में शब्द सीमा, जहाँ विनिर्दिष्ट है, का अनुसरण किया जाना चाहिए। The number of marks carried by a question/part is indicated against it. vi. प्रत्येक प्रश्न /भाग के लिए नियत अंक उसके सामने दिए गए हैं। Questions are printed in English & Hindi languages.
In case of any ambiguity in vii. translation of any question, English version shall be treated as final. प्रत्येक प्रश्न हिन्दी और अंग्रेजी दोनों भाषाओं में छपा है। प्रश्नों के अनुवाद में किसी अस्पष्टता की स्थिति में ,अंग्रेजी सस्करण को ही अन्तिम माना जाएगा। \mathbf 1

Questions (page 2)

Q1. Q
1. (i) The wave function for a particle in a one-dimensional box of length 'a' is given Ψ = A sin(π x/a). Calculate the value of 'A' for a box of length 800 nm.

Q2. Q
1. (ii) Describe structure and functions of Haemoglobin. How does the coordination of globin to the 5th position of Haemoglobin assist oxygenation process?

Q3. Q
1. (i) How do the atomic orbitals combine to form bonding and antibonding molecular orbitals? What are the limitations associated with these combinations? Calculate the bond order of NO, NO+ and NO- species and comment on their relative stability.

Q4. Q
1. (ii) The complex compound CoCl3(en) contains only one chloride ion which can be precipitated as AgCl on the addition of AgNO3. a) Draw the structure of complex. b) Write the IUPAC name. c) Calculate the EAN of complex. d) Give the coordination number of Co in the complex.

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Frequently asked questions

What is the total duration of the exam?

3 hours.

What is the maximum marks for the paper?

200 marks.

How many sections are there and how many questions per section?

Two sections (Section A and Section B); each section contains four questions.

How many questions must be attempted?

Five questions in total.

Which questions are compulsory?

Question Nos. 1 and 5 are compulsory.

In which languages are the questions printed?

Questions are printed in English and Hindi.

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