Board Paper of Class 12-Science 2005 Chemistry Delhi(SET 1) - Solutions
General Instructions:
(i) All questions are compulsory.
(ii) This question paper consists of four sections A, B, C and D.
Section A contains 5 questions of one mark each.
Section B is of 7 questions of two marks each.
Section C is of 12 questions of three marks each and
Section D is of 3 questions of five marks each.
(iii) There is no overall choice. However, an internal choice has been provided.
(iv) Wherever necessary, the diagrams drawn should be neat and properly labelled.
(i) All questions are compulsory.
(ii) This question paper consists of four sections A, B, C and D.
Section A contains 5 questions of one mark each.
Section B is of 7 questions of two marks each.
Section C is of 12 questions of three marks each and
Section D is of 3 questions of five marks each.
(iii) There is no overall choice. However, an internal choice has been provided.
(iv) Wherever necessary, the diagrams drawn should be neat and properly labelled.
- Question 1
What is the maximum possible coordination number of an atom in an hcp crystal structure of an element?
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- Question 2
State the formula relating pressure of a gas with its mole fraction in a liquid solution in contact with it.
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- Question 3
Express the relation between the half-life period of a reactant and its initial concentration if the reaction involved is of second order.
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- Question 4
How are formalin and trioxane related to methanal?
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- Question 5
Why are primary amines higher boiling than tertiary amines?
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