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Chemistry (Theory) 2016-2017 ISC (Science) Class 12 Question Paper Solution

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Chemistry (Theory)
Marks: 70Academic Year: 2016-2017
Date & Time: 20th March 2017, 2:00 pm
Duration: 3h
  • Attempt all questions in Part I.
  • Attempt six questions from Part II.
  • Choosing two questions from section A ,
    two from Section B and two from Section C.

Part I
[20]1
[5]1.a
[1]1.a.i

Fill in the blanks by choosing the appropriate word/words from those given in the brackets:

(iodoform, acetaldehyde, positive, greater, acidic, acetone, disaccharide, negative, increases, glucose, decreases, chloroform, polysaccharide, lactose, lesser, basic, cationic hydrolysis, anionic hydrolysis)

Calcium acetate on heating gives ________ which gives _______ on heating with iodine and sodium hydroxide solution.

Concept: Ionic Equilibria - Common Ion Effect Example
Chapter: [5.07] Common ion effect
[1]1.a.ii

Fill in the blanks by choosing the appropriate word/words from those given in the brackets: 

(iodoform, acetaldehyde, positive, greater, acidic, acetone, disaccharide, negative, increases, glucose, decreases, chloroform, polysaccharide, lactose, lesser, basic, cationic hydrolysis, anionic hydrolysis)

On dilution of a solution, its specific conductance ________ while its equivalent conductance ________.

Concept: Electrolytic Conductance - General Relationship Between
Chapter: [6.04] Electrolytic conductance
[1]1.a.iii

Fill in the blanks by choosing the appropriate word/words from those given in the brackets:  

(iodoform, acetaldehyde, positive, greater, acidic, acetone, disaccharide, negative, increases, glucose, decreases, chloroform, polysaccharide, lactose, lesser, basic, cationic hydrolysis, anionic hydrolysis)

Sucrose is a _________ and yields upon hydrolysis, a mixture of ________ and fructose.

Concept: Carbohydrates - Structures of Glucose
Chapter: [0.17] Biomolecules – carbohydrates, proteins, enzymes, vitamins and nucleic acids
[1]1.a.iv

Fill in the blanks by choosing the appropriate word/words from those given in the brackets:  

(iodoform, acetaldehyde, positive, greater, acidic, acetone, disaccharide, negative, increases, glucose, decreases, chloroform, polysaccharide, lactose, lesser, basic, cationic hydrolysis, anionic hydrolysis)

More _______ the standard reduction potential of a substance, the ______ is its ability to displace hydrogen from acids.

Concept: Galvanic Cells, Mechanism of Current Production in a Galvanic Cell; - Standard Hydrogen Electrode
Chapter: [6.02] Galvanic cells, mechanism of current production in a galvanic cell;
[1]1.a.v

Fill in the blanks by choosing the appropriate word/words from those given in the brackets: 

(iodoform, acetaldehyde, positive, greater, acidic, acetone, disaccharide, negative, increases, glucose, decreases, chloroform, polysaccharide, lactose, lesser, basic, cationic hydrolysis, anionic hydrolysis)

An aqueous solution of CH3COONa is ________ due to ______.

Concept: Reversible Reactions and Dynamic Equilibrium - Hydrolysis of Simple Esters
Chapter: [4.01] Reversible reactions and dynamic equilibrium
[5]1.b
[1]1.b.i

Complete the following statement by selecting the correct alternative from the choices given: 

In a face-centered cubic lattice, atom (A) occupies the comer positions and atom (B) occupies the face centre positions. If one atom of (B) is missing from one of the face-centered points, the formula of the compound is:

A2B5

A2B3

AB2

A2B

Concept: Crystal Lattices and Unit Cells - Introduction
Chapter: [0.02] States of Matters: Structure and Properties Solid State
[1]1.b.ii

Complete the following statement by selecting the correct alternative from the choices given: 

The half-life period of a first-order reaction is 20 minutes. The time required for the concentration of the reactant to change from 0.16 M to 0.02 M is:

80 minutes

60 minutes

40 minutes

20 minutes

Concept: Order of a Reaction - Derivation of Expression of Half-life Period from First Order Rate Equation
Chapter: [3.01] Order of a reaction
[1]1.b.iii

Complete the following statement by selecting the correct alternative from the choices given:  

For a spontaneous reaction ΔG° and E° cell will be respectively:

-ve and +ve

+ve and -ve

+ve and +ve

-ve and -ve

Concept: Nernst Equation - Introduction
Chapter: [6.02] Galvanic cells, mechanism of current production in a galvanic cell;
[1]1.b.iv

Complete the following statement by selecting the correct alternative from the choices given:  

The conjugate acid of `"HPO"_4^(2-)` is : 

H3PO3 

H3PO4 

`"H"_2"PO"_4^-`

`"PO"_4^(3-)`

Concept: Acids, Bases and Salts - Arrhenius, BroNsted-lowry and Lewis Concept of Acids and Bases
Chapter: [5.01] Arrhenius, Brönsted-Lowry and Lewis concept of acids and bases
[1]1.b.v

Complete the following statement by selecting the correct alternative from the choices given:  

The polymer formed by the condensation of hexamethylenediamine and adipic acid is: 

Teflon

Bakelite

Dacron

Nylon-66

Concept: Polymers - Nylon 66
Chapter: [0.16] Polymers
[5]1.c
[1]1.c.i

Answer the following question:  

Why the freezing point depression (ΔTf) of 0.4 M NaCl solution is nearly twice than that of 0.4 M glucose solution?

Concept: Relative Molecular Mass of Non-volatile Substances - Depression in Freezing Point
Chapter: [1.03] Relative molecular mass of non-volatile substances
[1]1.c.ii

Answer the following question: 

Identify the order of reaction from each of the following units of rate constant (k): 

(i) mol L-1 sec-1 

(ii) mol-1 L sec-1 

Concept: Order of a Reaction - Order-reaction (Meaning)
Chapter: [3.01] Order of a reaction
[1]1.c.iii

Specific conductivity of 0.20 M solution of KCl at 298 K is 0.025 S cm-1. Calculate its molar conductivity.

Concept: Electrolytic Conductance - General Relationship Between
Chapter: [6.04] Electrolytic conductance
[1]1.c.iv

Answer the following question:  

Name the order of reaction which proceeds with a uniform rate throughout. 

Concept: Order of a Reaction - Order-reaction (Meaning)
Chapter: [3.01] Order of a reaction
[1]1.c.v

Answer the following question:

What are the products formed when phenol and nitrobenzene are treated separately with a mixture of concentrated sulphuric acid and concentrated nitric acid?

Concept: Nitrobenzene Method of Preparation
Chapter: [0.15] Cyanides, Isocyanides, Nitro compounds, Amines and Diazonium Salt
[5]1.d

Match the following: 

Column A Column B
(i) Diazotisation (a) Bakelite
(ii) Argentite (b) Nernst equation
(iii) Thermosetting plastics (c) Aniline
(iv) Electrochemical cell (d) Ethylenediamine
(v) Bidentate ligand (e) Froth floatation process
Concept: Polymers - Thermosetting Plastics
Chapter: [0.16] Polymers
Part II Section A
[10]2 | Attempt any two questions of the following:
[5]2.a
[2]2.a.i

Determine the freezing point of a solution containing 0.625 g of glucose (C6H12O6) dissolved in 102.8 g of water. 

(Freezing point of water = 273 K, Kf for water = 1.87 K kg mol-1, at. wt. C = 12, H = 1, O = 16)

Concept: Relative Molecular Mass of Non-volatile Substances - Freezing Point Depression
Chapter: [1.03] Relative molecular mass of non-volatile substances
[2]2.a.ii

A 0.15 M aqueous solution of KCl exerts an osmotic pressure of 6.8 atm at 310 K. Calculate the degree of dissociation of KCl. (R = 0.0821 Lit. atm K-1 mol-1). 

Concept: Relative Molecular Mass of Non-volatile Substances - Osmotic Pressure and Its Application in the Determination of Relative Molecular Mass
Chapter: [1.03] Relative molecular mass of non-volatile substances
[1]2.a.iii

A solution containing 8.44 g of sucrose in 100 g of water has a vapour pressure 4.56 mm of Hg at 273 K. If the vapour pressure of pure water is 4.58 mm of Hg at the same temperature, calculate the molecular weight of sucrose. 

Concept: Vapour Pressure of Liquid Solutions - Vapour Pressure of Liquid- Liquid Solutions
Chapter: [1.01] Raoult's law and colligative properties
[4]2.b
[2]2.b.i

When ammonium chloride and ammonium hydroxide are added to a solution containing both Al3+ and Ca2+ ions, which ion is precipitated first and why?

Concept: Ionic Equilibria - Common Ion Effect Example
Chapter: [5.07] Common ion effect
[2]2.b.ii

A solution of potassium chloride has no effect on litmus whereas, a solution of zinc chloride turns the blue litmus red. Give a reason.

Concept: P - Block Group 17 Elements - Chlorine
Chapter: [0.08] Chemistry of p-Block Elements: Group 16, 17, 18
[1]2.c

How many sodium ions and chloride ions are present in a unit cell of sodium chloride crystal?

Concept: Ionic Equilibria - Common Ion Effect Example
Chapter: [5.07] Common ion effect
[10]3
[4]3.a
[1]3.a.i

Lead sulphide has a face-centered cubic crystal structure. If the edge length of the unit cell of lead sulphide is 495 pm, calculate the density of the crystal. 
(at. wt. of Pb = 207, S = 32)

Concept: Ozone - Reaction with Lead Sulphide, Potassium Iodide and Mercury
Chapter: [0.09] Preparation/ Manufacture, Properties and Uses of Compounds of Groups 16, 17, – Ozone, Sulphur Dioxide, Sulphuric Acid, Hydrochloric Acid
[3]3.a.ii

For the reaction: \[\ce{2H2 + 2NO ⇌ 2H2O + N2}\] , the following rate data was obtained: 

S.No [NO] mol L-1 [H2] mol L-1 Rate:
mol L-1sec-1
1 0.40 0.40 4.6 × 10-3
2 0.80 0.40 18.4 × 10-3
3 0.40 0.80 9.2 × 10-3

Calculate the following:
(1) The overall order of a reaction.
(2) The rate law.
(3) The value of rate constant (k).

Concept: Order of a Reaction - Order as an Experimental Quantity
Chapter: [3.01] Order of a reaction
[4]3.b
[2]3.b.i

The following electrochemical cell is set up at 298 K:

`"Zn"//"Zn"^(2+)("aq")(1"M")////"Cu"^(2+)("aq")(1"M")//"Cu"`

Given`-> "E"_("Zn"^(2+)//"2n")^0 = -0.761"V", "E"_("Cu"^(2+)//"Cu")^0 = +0.339"V"`

Write the cell reaction.

Concept: Galvanic Cells, Mechanism of Current Production in a Galvanic Cell; - Electrochemical Series
Chapter: [6.02] Galvanic cells, mechanism of current production in a galvanic cell;

The following electrochemical cell is set up at 298 K: 

`"Zn"//"Zn"^(2+)("aq")(1"M")////"Cu"^(2+)("aq")(1"M")//"Cu"`

Given`-> "E"_("Zn"^(2+)//"2n")^0 = -0.761"V", "E"_("Cu"^(2+)//"Cu")^0 = +0.339"V"`

Calculate the emf and free energy change at 298 K.

Concept: Galvanic Cells, Mechanism of Current Production in a Galvanic Cell; - Electrochemical Series
Chapter: [6.02] Galvanic cells, mechanism of current production in a galvanic cell;
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[2]3.b.ii

Answer the following:

What is the effect of temperature on the ionic product of water (Kw)?

Concept: Chemical Kinetics - Effect of Temperature on the Rate Constant of a Reaction
Chapter: [3.04] Effect of temperature on the rate constant of a reaction

Answer the following:  

What happens to the ionic product of water (Kw) if some acid is added to it?

Concept: Chemical Kinetics - Effect of Temperature on the Rate Constant of a Reaction
Chapter: [3.04] Effect of temperature on the rate constant of a reaction
[2]3.c

Frenkel defect does not change the density of the ionic crystal whereas, Schottky defect lowers the density of ionic crystal. Give a reason; 

Concept: States of Matters: Structure and Properties Solid State - Characteristics of Crystalline Solids;
Chapter: [0.02] States of Matters: Structure and Properties Solid State
[10]4
[5]4.a
[3]4.a.i
[1]4.a.i.1

Name the law or principle to which the following observation confirm:

When water is added to a 1.0 M aqueous solution of acetic acid, the number of hydrogen ion (H+) increases.

Concept: Ionic Equilibria - Ostwald’s Dilution Law and Its Derivation
Chapter: [5.06] Ostwald’s dilution law and its derivation
[1]4.a.i.2

Name the law or principle to which the following observations confirm :

When 9650 coulombs of electricity is passed through a solution of copper sulphate, 3.175 g of copper is deposited on the cathode (at. wt. of Cu = 63.5).

Concept: Electrical Properties
Chapter: [0.02] States of Matters: Structure and Properties Solid State
[1]4.a.i.3

Name the law or principle to which the following observations confirm: 

When ammonium chloride is added to a solution of ammonium hydroxide, the concentration of hydroxyl ion decreases. 

Concept: Ionic Equilibria - Common Ion Effect Example
Chapter: [5.07] Common ion effect
[2]4.a.ii

What is the difference between the order of a reaction and the molecularity of a reaction?

Concept: Order of a Reaction - Order-reaction (Meaning)
Chapter: [3.01] Order of a reaction
[3]4.b
[2]4.b.i

Explain why high pressure is required in the manufacture of sulphur trioxide by the contact process. State the law or principle used. 

Concept: Reversible Reactions and Dynamic Equilibrium - The Contact Process for the Manufacture of Sulphuric Acid
Chapter: [4.01] Reversible reactions and dynamic equilibrium
[1]4.b.ii

Calculate the equilibrium constant (Kc) for the formation of NH3 in the following reaction: 

\[\ce{N2(g) + 3H2(g) ⇌ 2NH3(g)}\]

At equilibrium, the concentration of NH3, H2 and N2 are 1.2 × 10-2, 3.0 × 10-2 and 1.5 × 10-2 M respectively.

Concept: Reversible Reactions and Dynamic Equilibrium - Equilibrium Constant in Terms of Concentration Kc
Chapter: [4.01] Reversible reactions and dynamic equilibrium
[2]4.c
[1]4.c.i

Explain the following:  

Hydrolysis of ester (ethyl acetate) begins slowly but becomes fast after some time. 

Concept: Reversible Reactions and Dynamic Equilibrium - Hydrolysis of Simple Esters
Chapter: [4.01] Reversible reactions and dynamic equilibrium
[1]4.c.ii

Explain the following:

The pH value of acetic acid increases on the addition of a few drops of sodium acetate. 

Concept: Ionic Equilibria - Common Ion Effect Example
Chapter: [5.07] Common ion effect
Section B
[5]5
[2]5.a
[1]5.a.i

Using IUPAC norms write the formulae for Potassium trioxalatoaluminate(III)

Concept: Importance and Applications of Coordination Compounds
Chapter: [0.07] Coordination Compounds
[1]5.a.ii

Write the formula of the following compounds:

Hexaaquairon (II) sulphate. 

Concept: Coordination Compounds - IUPAC rules of nomenclature of coordination compounds
Chapter: [0.07] Coordination Compounds
[1]5.b
[0.5]5.b.i

Name the type of isomerism shown by the following compounds: 

[CU(NH3)4] [PtCl4] and [Pt(NH3)4] [CuCl4

Concept: Nomenclature of Coordination Compounds - Naming of Mononuclear Coordination Compounds
Chapter: [0.07] Coordination Compounds
[0.5]5.b.ii

Name the type of isomerism shown by the following compounds: 

[Co(Pn)2Cl2]+ and [Co(en)2Cl2]

Concept: Nomenclature of Coordination Compounds - Naming of Mononuclear Coordination Compounds
Chapter: [0.07] Coordination Compounds
[2]5.c
[0.5]5.c.i

For the coordination complex ion [Co(NH3)6]3+ 

Give the IUPAC name of the complexion.

Concept: Ionic Equilibria - Common Ion Effect Example
Chapter: [5.07] Common ion effect
[0.5]5.c.ii

For the coordination complex ion [Co(NH3)6]3+ 

What is the oxidation number of cobalt in the complexion?

Concept: Ionic Equilibria - Common Ion Effect Example
Chapter: [5.07] Common ion effect
[0.5]5.c.iii

For the coordination complex ion [Co(NH3)6]3+

State the type of hybridisation of the complexion.

Concept: Ionic Equilibria - Common Ion Effect Example
Chapter: [5.07] Common ion effect
[0.5]5.c.iv

For the coordination complex ion [Co(NH3)6]3+

State the magnetic behaviour of the complexion. 

Concept: Ionic Equilibria - Common Ion Effect Example
Chapter: [5.07] Common ion effect
[5]6
[3]6.a
[1]6.a.i

Give balanced equation for the following reaction: 

Potassium permanganate is heated with concentrated hydrochloric acid.

Concept: Potassium Permanganate
Chapter: [0.1] Chemistry of Transition and Inner-Transition Elements: d-Block: 3d, 4d and 5d series f-Block: 4f and 5f series
[1]6.a.ii

Give balanced equation for the following reaction: 

Lead sulphide is heated with hydrogen peroxide. 

Concept: Ozone - Hydrogen Peroxide
Chapter: [0.09] Preparation/ Manufacture, Properties and Uses of Compounds of Groups 16, 17, – Ozone, Sulphur Dioxide, Sulphuric Acid, Hydrochloric Acid
[1]6.a.iii

Give balanced equation for the following reaction: 

Ozone is treated with potassium iodide solution. 

Concept: P - Block Group 16 Elements - Ozone
Chapter: [0.08] Chemistry of p-Block Elements: Group 16, 17, 18 [0.09] Preparation/ Manufacture, Properties and Uses of Compounds of Groups 16, 17, – Ozone, Sulphur Dioxide, Sulphuric Acid, Hydrochloric Acid
[2]6.b

Discuss the theory involved in the manufacture of sulphuric acid by the contact process.

Concept: Reversible Reactions and Dynamic Equilibrium - The Contact Process for the Manufacture of Sulphuric Acid
Chapter: [4.01] Reversible reactions and dynamic equilibrium
[5]7
[3]7.a
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[1.5]7.a.i

What are the types of hybridisation of iodine in interhalogen compounds IF3, IF5 and IF7, respectively?

Concept: Hybridization, Shape and Structure of Compounds
Chapter: [0.08] Chemistry of p-Block Elements: Group 16, 17, 18
[1.5]7.a.ii

Draw the structure of xenon hexafluoride (XeF6) molecule and state the hybridisation of the central atom.

Concept: Hybridization, Shape and Structure of Compounds
Chapter: [0.08] Chemistry of p-Block Elements: Group 16, 17, 18
[2]7.b

Give the balanced equations for the conversion of argentite (Ag2S) to metallic silver. 

Concept: Alcohols - Conversion of One Alcohol into Another
Chapter: [12.05] Conversion of one alcohol into another
Section C
[10]8
[5]8.a
[1]8.a.i

How can the following conversion be brought about: 

Acetaldehyde to propan-2-ol.

Concept: Aldehydes and Ketones - Difference Between Formaldehyde and Acetaldehyde
Chapter: [13.01] Carbonyl compounds
[1]8.a.ii

How can the following conversion be brought about:

Nitrobenzene to p-aminoazobenzene.

Concept: Nitrobenzene Method of Preparation
Chapter: [0.15] Cyanides, Isocyanides, Nitro compounds, Amines and Diazonium Salt
[2]8.a.iii

How can the following conversion be brought about:

Acetic acid to methylamine.

Concept: Ionic Equilibria - Common Ion Effect Example
Chapter: [5.07] Common ion effect
[1]8.a.iv

How can the following conversion be brought about:

Aniline to benzene

Concept: Chlorobenzene - Preparation from Aniline
Chapter: [11.04] Chlorobenzene
[2]8.b
[1]8.b.i

How will you distinguish between primary, secondary and tertiary amines by Hinsberg’s test? 

Concept: Amines - Distinction Between Primary, Secondary and Tertiary Amines
Chapter: [0.15] Cyanides, Isocyanides, Nitro compounds, Amines and Diazonium Salt
[1]8.b.ii

Why do alcohols possess higher boiling points as compared to those of corresponding alkanes?

Concept: Alcohols - Structure of Alcohols
Chapter: [12.04] Classification, general formulae, structure and nomenclature

Give balanced equations for the following reaction :

Methyl magnesium bromide with ethyl alcohol. 

Concept: Preparation, Properties, and Uses of the Following: Ethyl Bromide, Chloroform, Iodoform, Haloform Reaction
Chapter: [11.05] Preparation, properties, and uses of the following
[3]8.c
[1]8.c.i

Identify the compounds A, B and C: 

\[\ce{C6H5COOH ->[PCl5] A ->[H2 - Pd/BaSO4] B ->[KCN alc.][distil.] C}\]

Concept: Coordination Compounds - IUPAC rules of nomenclature of coordination compounds
Chapter: [0.07] Coordination Compounds
[1]8.c.ii

Identify the compounds A, B and C :

\[\ce{H - C ≡ C - H ->[H2O][dil.H2SO4 + HgSO4] A ->[H2][(Nil)] B ->[140°][cone. H2SO4] C}\]

Concept: Coordination Compounds - IUPAC rules of nomenclature of coordination compounds
Chapter: [0.07] Coordination Compounds
[10]9
[3]9.a
[1]9.a.i

Give balanced equation for the following name reaction: 

Friedel-Crafts reaction (alkylation)

Concept: Amines - Chemical Reactions of Amines - Alkylation and Acylation
Chapter: [0.15] Cyanides, Isocyanides, Nitro compounds, Amines and Diazonium Salt
[1]9.a.ii

Give balance equation for the following name reaction:

Williamson’s synthesis

Concept: Ethers - Preparation from alcohol (Williamson’s synthesis)
Chapter: [13.02] Ethers
[1]9.a.iii

Give a balanced equation for the following name reaction: 

Aldol condensation

Concept: Aldehydes and Ketones - Base Catalysed Reactions
Chapter: [13.01] Carbonyl compounds
[3]9.b
[1.5]9.b.i

Give the chemical test to distinguish:

Ethyl alcohol and sec-propyl alcohol

Concept: Preparation, Properties, and Uses of the Following: Ethyl Bromide, Chloroform, Iodoform, Haloform Reaction
Chapter: [11.05] Preparation, properties, and uses of the following
[1.5]9.b.ii

Give the chemical test to distinguish:

Acetaldehyde and acetic acid

Concept: Preparation, Properties, and Uses of the Following: Ethyl Bromide, Chloroform, Iodoform, Haloform Reaction
Chapter: [11.05] Preparation, properties, and uses of the following
[4]9.c
[2]9.c.i
[1]9.c.i.1

Deficiency of which vitamin causes the following diseases of Scurvy.

Concept: Introduction of Vitamins
Chapter: [0.17] Biomolecules – carbohydrates, proteins, enzymes, vitamins and nucleic acids
[1]9.c.i.2

Deficiency of which vitamin causes the following diseases of Night blindness

Concept: Introduction of Vitamins
Chapter: [0.17] Biomolecules – carbohydrates, proteins, enzymes, vitamins and nucleic acids
[2]9.c.ii

Write two differences between globular and fibrous proteins.

Concept: Introduction of Proteins
Chapter: [0.17] Biomolecules – carbohydrates, proteins, enzymes, vitamins and nucleic acids
[10]10
[4]10.a

An aliphatic unsaturated hydrocarbon (A) when treated with HgSO4/H2SO4 yields a compound (B) having molecular formula C3H6O. (B) on oxidation with concentrated HNO3 gives two compounds (C) and (D). Compound (C), when treated with PCl5, gives compound (E). (E) when reacts with ethanol gives a sweet-smelling liquid (F). Compound (F) is also formed when (C) reacts with ethanol in the presence of concentrated H2SO4.

(i) Identify the compounds A, B, C, D, E and F.
(ii) Give the chemical equation for the reaction of (C) with chlorine in the presence of red phosphorus and name the reaction.

Concept: The Nomenclature of Aliphatic Compounds Containing Halogen Atom - Naming the Halogen Derivatives of Alkanes by Using Common System
Chapter: [11.02] The nomenclature of aliphatic compounds containing halogen atom
[3]10.b
[1]10.b.i

Answer the following:

What is the common name of the polymer obtained by the polymerization of caprolactam? Is it an addition polymer or condensation polymer? 

Concept: Polymers - Nylon 6
Chapter: [0.16] Polymers
[2]10.b.ii

Answer the following:

Name the two organic compounds which have the same molecular formula C2H6O. Will they react with PCl5? If they react, what are the products formed?

Concept: Aniline - Importance in Synthesis of Other Organic Compounds
Chapter: [0.15] Cyanides, Isocyanides, Nitro compounds, Amines and Diazonium Salt
[3]10.c
[1]10.c.i

Give balanced equations for the following reaction :

Methyl magnesium bromide with ethyl alcohol. 

Concept: Preparation, Properties, and Uses of the Following: Ethyl Bromide, Chloroform, Iodoform, Haloform Reaction
Chapter: [11.05] Preparation, properties, and uses of the following
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[1]10.c.ii

Give balanced equations for the following reactions:

Acetic anhydride with phosphorus pentachloride.

Concept: Polyhalogen Compounds
Chapter: [11.04] Chlorobenzene
[1]10.c.iii

Give balanced equations for the following reaction:

Acetaldehyde with hydroxylamine.

Concept: Polyhalogen Compounds
Chapter: [11.04] Chlorobenzene
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CISCE previous year question papers Class 12 Chemistry (Theory) with solutions 2016 - 2017

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