Home
News
Colleges
Courses
Admission
Lectures
Online Test
Past Papers
Date Sheets
Results
Study Abroad
Jobs
Tutors
More
Apps
.jpg)
.jpg)
SECTION ‘B’ (Short-Answer Questions) (36)
NOTE: Answer any NINE part questions. Select FOUR part questions from Inorganic-General Chemistry and FIVE part questions from Organic Chemistry. All part questions carry equal marks.
INORGANIC-GENERAL CHEMISTRY
2.
i) Discuss the group trend of ionization energy and electronegativity in group IA, IIA and IIIA.
OR
Give any four scientific reasons of the following:
* Alkaline earth metal possess smaller atomic radii and Alkali metal.
* Acidity of hydrogen halides increases from HF to HI.
* Ionization energy decreases from top to bottom in s-block elements.
* Ligands are generally called Lewis-Bases.
* Chromium exist in 4s1,3d5 configuration but not in 4s2,3d4.
ii) Write the IUPAC name of the following:
*[Cr(en)3](NO3)3
*[Pt(NH3)2Cl2]2+
*[Zn(OH)4]2-
*Na3[Co(C2O4)3]
iii) Explain any two of the following:
*Catalytic Converter *CFC *Industrial Smog
iv) What is Bleaching Powder? Write its Preparation and properties.
v) Explain any two of the following properties of 3d series of transition elements:
*Colour of Complexes *Catalytic Activity *Binding Energy
vi) Explain the auto-oxidizing and reducing properties of chlorine and give classification of Ligands.
vii) Define any four of the following:
*Analgesic *Antibiotic *Chiral Carbon *Antipyretic Medicine *Anti-inflammatory Medicine.
—OR—What is diagonal relationship? Explain the diagonal relation between:
*Li and Mg *Be and Al
viii) Define any four of the following:
*Catenation *Bucky Ball *Functional Group *Isomerism *Reforming of Petroleum
—OR—Describe homologous series of organic compound and write three properties of homologous series.
ix) Write any four IUPAC name of the following:
*CH3(CH2)5COO C(CH3)3
*(CH2)5(COOH)2-
* [benzene ring with OH (top), Br (right), Cl (bottom-left)]
* CH3 - CH2 - OC(CH3)2C2H5
* CH3 - CH2 - C - CH2 - COOH
||
O
x) Draw and explain orbital structure of Ethyne and write two methods of its preparation.
—OR—What are amines? Give three methods of preparation of amines.
xi) Write equation and mechanism of sulphonation and nitration of benzene.
xii) What is Free Radical? Explain the reaction mechanism of chlorination of methane in the presence of sunlight.
xiii) Write the chemical equation of any four of the following:
*Reaction of Ethyne with HBr.
*Reaction of ethanol with acidified K2Cr2O7.
*Reaction of Grignard reagent with CO2
*Reaction of ethandiol with HIO4
*Reaction of ethanal with alcohol.
xiv) Classify various proteins on the basis of functions and write its importance.
—OR—Explain the role of glucose, sucrose and lactose in health and disease.
SECTION “C” (Detailed Answer Questions)(32)
NOTE: Answer any Two questions – One question from Inorganic – General Chemistry and One from Organic Chemistry. Both questions carry equal marks.
INORGANIC-GENERAL CHEMISTRY
3.
a) Describe the manufacturing of H2SO4 by contact process. Show by equation that is an oxidizing agent and dehydrating agent.
—OR—Describe the manufacture of Caustic soda by Castner-kellne cell. What are the advantages and disadvantages of the process?
b) Write any Eight chemical equation for the following:
* A mixture of nitrogen and silicon is heated under elevated temperature.
* Phosphorous is put into water.
* Chlorine gas is passed through hot solution of Caustic soda.
* Reaction between KMnO4 and FeSO4 (write ionic equation)
* Reaction of Mn with air.
* Reaction of copper with concentrated HNO3
* Reaction of Aluminum with caustic soda.
* Reaction of Rubidium with air.
* Reaction of Fluorine with oxygen.
* Reaction of chromium with water.
4.
a) Describe the various steps involve in the extraction of 99.99% pure copper from its chalcopyrite ore. Write the composition of duralumin and brass.
b) Write notes on any three of the following
*PVC *Nylon *Fertilizer *Detergent
ORGANIC CHEMISTRY
5.
a) What is meant by nucleophile? Give mechanism of the following reactions:
* SN1 reaction between 3° alkyl halide and NaCN.
* SN2 reaction between 1° alkyl halide and NaOH.
Write three methods for the preparation of Alcohol.
b) Draw the structure of any eight of the following:
*Benzene –1,4 – dioic acid *ethyl neopentyl ether
*Benzophenone *p-cresol
Di-vinyl acetylene * Neo pentyl alcohol
* β – methyl butyric acid * 3 – chlorobenzamide
* Resorcinol * tert, butyl chloride
6.
a) Explain molecular orbital treatment of benzene and give the preparation of TNT, m-nitrotoluene and cyclohexane.
—OR—What are organometallic compounds? How is Grignard reagent prepared? Write the reactions of CH3MgI with water, alcohol , ester and amines.
b) Write any eight chemical equations of the following:
* Reaction of acetaldehyde with Zn/Hg amalgam.
*Reaction of ethane with ozone.
*Reaction of Grignard reagent with acetone.
*Reaction of benzene diazonium chloride when heated with water.
*Reaction of acetic acid with LiAlH4.
*Reaction of ethanol with acetic acid in the presence of H2SO4.
* Reaction of bromoethane with KSH.
* Reaction of phenol with concentrated HNO3.
*Reaction of alcohol with concentrated H2SO4.
*Reaction of ethyne with water under specific condition.
Past Papers
Class Wise Past Papers
Entry Test Past Papers
Technical Education Exams Past Papers
Past Papers feedback:
If you want to share some information with other students regarding past papers, you can send your valued feedback to ilmkidunya.com
Share your comments & questions here
No comments yet. Be the first to comment!