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Board of Intermediate Education: Model Paper (English Version)

This document appears to be a model paper for the Senior Intermediate Chemistry exam containing 3 sections with multiple choice, short answer, and long answer questions. Section A contains 10 very short answer questions worth 2 marks each (total 20 marks) covering topics like the difference between minerals and ores, properties of different substances, polymer structures, solutions, and medicinal chemistry. Section B has 6 short answer questions worth 4 marks each (total 24 marks) involving concepts like Bragg's equation, colloids, extraction of zinc, drawing organic structures, acid-base properties, and coordination compounds. Section C comprises 2 long answer questions worth 8 marks each (total 16 marks) about the manufacture of nitric acid, chlorine oxoacids,

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75 views2 pages

Board of Intermediate Education: Model Paper (English Version)

This document appears to be a model paper for the Senior Intermediate Chemistry exam containing 3 sections with multiple choice, short answer, and long answer questions. Section A contains 10 very short answer questions worth 2 marks each (total 20 marks) covering topics like the difference between minerals and ores, properties of different substances, polymer structures, solutions, and medicinal chemistry. Section B has 6 short answer questions worth 4 marks each (total 24 marks) involving concepts like Bragg's equation, colloids, extraction of zinc, drawing organic structures, acid-base properties, and coordination compounds. Section C comprises 2 long answer questions worth 8 marks each (total 16 marks) about the manufacture of nitric acid, chlorine oxoacids,

Uploaded by

Reddy Gmd
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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net

BOARD OF INTERMEDIATE EDUCATION


SENIOR INTER CHEMISTRY

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MODEL PAPER (ENGLISH VERSION)

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TIME: 3 HOURS

MAX.MARKS: 60

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SECTION - A
I.

i) Very Short Answer Type questions.

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ii) Answer ALL questions.


ii) Each question carries TWO marks.

10 2 = 20

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1.

What is the difference between mineral and an ore?

2.

Why is dioxygen a gas but sulphur a solid?

3.

Explain the reaction of the following with water.

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a) XeF2

b) XeF6

4.

Give the units of rate constants for nth, zero, first and second order reactions.

5.

Write the names and structures of monomers present in the polymers

a) Buna-S

6.

b) Dacron

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A solution of glucose in water labelled as 20% w/w. What would be the molarity and molality of the
solution?

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7.

What is biodegradable polymer? Give one example of biodegradable polyester. Give its use.

8.

What are antibiotics? Give an example.

9.

What are narcotic & non narcotic analgesics?

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10. Aqueous Cu+2 ions are blue in colour, where as aqueous Zn+2 ions are colourless. Why?

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SECTION - B

II.

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i) Short Answer Type questions.


ii) Answer any SIX questions.

iii) Each question carries FOUR marks.


11. Derive Bragg's equation.

12. a) What are emulsions?

b) Name the dispersion medium and dispersed phase present in the colloidal systems
i) milk

ii) smoke

13. Explain the extraction of Zinc from Zinc blende.

R-26-2-16

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6 4 = 24

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14. Write the structures of the following compounds.
i) 1 - Chloro - 4 - Ethylcyclohexane
ii) 1 - Bromo - 4 - Sec. butyl - 2 - Methyl benzene

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iii) Ethylidene Chloride

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iv) 4 - tertiary butyl - 3 - iodo benzene


15. Explain the acidic nature of phenols and compare it with that of alcohols.

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16. What are Hormones? Give the functions of 2 different hormones present in the body.
17. Explain Werner's theory of coordinate compounds with 2 suitable examples.

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18. What is ideal solution?

Vapour pressure of water at 293 K is 17.535 mm Hg. Calculate the vapour pressure of the solution at
293 K when 25 g of glucose is dissolved in 450 g of water.

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SECTION - C

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III. i) Long Answer Type questions.


ii) Answer any TWO questions.

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2 8 = 16

iii) Each question carries EIGHT marks.

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19. a) How is Nitric acid manufactured by Ostwald's process?

b) Write the names and formula of the oxoacids of Chlorine. Explain their structures and relative acidic
nature.

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20. a) State Kohlrausch's law of independent migration of ions.

b) How is change in Gibbs energy related to the cell emf mathematically?

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c) Give the salient features of the collision theory of reaction rates of bimolecular reactions.
21. Explain the following reactions with one example for each.

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a) Cross aldol condensation


b) Hell - Volhard - Zelinsky reaction

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c) Gatterman reaction
d) Carbyl amine reaction

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