(English Medium)
Academic Year: 2021-2022
Date: April 2022
Duration: 1h30m
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Note :
- Answers to this Paper must be written on the paper provided separately.
- You will not be allowed to write during the first 10 minutes.
- This time is to be spent in reading the question paper.
- The time given at the head of this Paper is the time allowed for writing the answers.
- Attempt all questions from Section A and any three questions from Section B.
- The intended marks for questions or parts of questions are given in brackets [ ].
The IUPAC name of Ethylene is ______.
Propane
Propyne
Ethene
Ethyne
Chapter: [0.09] Organic Chemistry
Carbon to carbon double bond is found in ______.
2-butylene
Acetaldehyde
Acetic acid
Ethyl alcohol
Chapter: [0.09] Organic Chemistry
Fused alumina is reduced to aluminium by electrolytic reduction, since ______.
Alumina is highly stable
Alumina is least stable
Alumina is not reduced by drying agents.
Alumina is not reduced by reducing agents.
Chapter: [0.07] Metallurgy
The catalyst preferred in the conversion of Sulphur dioxide to Sulphur trioxide is ______.
Finely divided iron
Graphite
Vanadium pentoxide
platinum
Chapter: [0.084] Sulphuric Acid
Substitution reaction is a characteristic property of ______.
Alcohols
Alkanes
Alkenes
Alkynes
Chapter: [0.09] Organic Chemistry
The gas evolved when dilute sulphuric acid reacts with iron sulphide.
Sulphur dioxide
Carbon dioxide
Hydrogen sulphide
Nitrogen dioxide
Sulphur trioxide
Vapour of sulphuric acid
Chapter: [0.084] Sulphuric Acid
An acid obtained from concentrated nitric acid on reaction with Sulphur ______.
Carbonic acid
Sulphuric acid
Nitric acid
Hydrochloric acid
Chapter: [0.084] Sulphuric Acid
The hydroxide soluble in excess of ammonium hydroxide is ______.
Zinc hydroxide
Lead hydroxide
Magnesium hydroxide
Ferrous hydroxide
Chapter: [0.04] Analytical Chemistry
The chemical name of the principal ore of aluminium ______.
Sodium aluminium fluoride
Aluminium oxide
Hydrated Aluminium fluoride
Hydrated aluminium oxide
Chapter: [0.07] Metallurgy
A hydrocarbon which is a greenhouse gas is ______.
Acetylene
Ethylene
Ethane
Methane
Chapter: [0.09] Organic Chemistry
Name the compound formed when: Ethene reacts with hydrogen in the presence of a catalyst.
Chapter: [0.09] Organic Chemistry
Name the compound formed when: Bauxite reacts with sodium hydroxide.
Chapter: [0.07] Metallurgy
Draw the structural diagram of:
Ethanoic acid
Chapter: [0.09] Organic Chemistry
Draw the structural diagram of 1,2 dichloroethane.
Chapter: [0.09] Organic Chemistry
Complete and balance the following chemical equation:
C2H6 + O2 →
Chapter: [0.09] Organic Chemistry
Complete and balance the following chemical equation:
C2H2 + I2 →
Chapter: [0.09] Organic Chemistry
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Complete and balance the following chemical equation:
NH3 + HCl →
Chapter: [0.1] Practical Work
Identify the anion present in the following compounds.
Compound Z which on reacting with dilute sulphuric acid liberates a gas that has no effect on acidified potassium dichromate but turns lime water milky.
Chapter: [0.1] Practical Work
Identify the anion present in the following compounds.
The solution of Compound L on reacting with freshly prepared ferrous sulphate solution followed by the addition of a few drops of concentrated sulphuric acid to the reactants along the sides of a test tube forms a brown ring at the junction of the two liquids.
Chapter: [0.084] Sulphuric Acid
State the following:
The drying agent used in the laboratory preparation of HCl gas.
Chapter: [0.081] Hydrogen Chloride
State the following:
Products are formed when ammonia is burnt in excess of oxygen.
Chapter: [0.08199999999999999] Ammonia
State the observation for the following, when:
Manganese dioxide reacts with concentrated HCl.
Chapter: [0.1] Practical Work
State the observation for the following, when:
A glass rod dipped in concentrated HCl acid is brought near ammonia gas.
Chapter: [0.08199999999999999] Ammonia [0.1] Practical Work
State the observation for the following, when:
Concentrated sulphuric acid is added to carbon.
Chapter: [0.084] Sulphuric Acid
Write a balanced equation for the following conversion:
Lead sulphate from lead nitrate and sulphuric acid.
Chapter: [0.084] Sulphuric Acid
Write a balanced equation for the following conversion:
Nitrogen trichloride from ammonia.
Chapter: [0.08199999999999999] Ammonia
Write a balanced equation for the following conversion:
Sodium chloride from sodium sulphite and dilute hydrochloric acid.
Chapter: [0.081] Hydrogen Chloride
State the relevant reason for the following:
A layer of powered coke is used over the electrolytic mixture in Hall Heroult’s process.
Chapter: [0.07] Metallurgy
State the relevant reason for the following:
Graphite anodes are continuously replaced during the electrolysis of alumina.
Chapter: [0.07] Metallurgy
Name the alloys for the given composition:
Magnesium and aluminium
Chapter: [0.07] Metallurgy
Name the alloys for the given composition:
Magnesium + Manganese + Aluminium + Copper
Chapter: [0.07] Metallurgy
Identify the terms for the following:
The experiment which demonstrates high solubility of ammonia gas.
Chapter: [0.08199999999999999] Ammonia
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Identify the terms for the following:
A method used to collect HCl gas.
Chapter: [0.081] Hydrogen Chloride
Identify the terms for the following:
The electrode where reduction takes place.
Chapter: [0.07] Metallurgy
Complete the table given below:
| Name of the process | Reactants | Acid product formed |
| (a) ______ | Nitrogen dioxide + water + oxygen | (b) ______ |
| (c) ______ | Oleum + water | Sulphuric acid |
Chapter: [0.084] Sulphuric Acid
Write the balanced chemical equation to show the concentration of ore in Baeyer’s process.
Sodium aluminate to aluminium hydroxide
Chapter: [0.07] Metallurgy
Write the balanced chemical equation to show the concentration of ore in Baeyer’s process.
Aluminium hydroxide to alumina
Chapter: [0.07] Metallurgy
The catalyst used in the oxidation of ammonia is ______.
zinc
platinum
Chapter: [0.08199999999999999] Ammonia
The product formed when ammonia reacts with oxygen is ______.
nitric oxide
nitrous oxide
Chapter: [0.08199999999999999] Ammonia
Name the following organic compound:
The compound with 3 carbon atoms whose functional group is a carboxylic acid.
Chapter:
Name the following organic compound:
The first homologue whose general formula is CnH2n.
Chapter: [0.09] Organic Chemistry
Name the following organic compound:
The compound formed by complete chlorination of ethyne.
Chapter: [0.09] Organic Chemistry
Answer the following question related to the laboratory preparation of the hydrogen chloride gas:
Why is sodium chloride preferred to other metallic chlorides?
Chapter: [0.081] Hydrogen Chloride [0.1] Practical Work
Answer the following question related to the laboratory preparation of the hydrogen chloride gas:
State the temperature required in the preparation.
Chapter: [0.081] Hydrogen Chloride [0.1] Practical Work
Answer the following question related to the laboratory preparation of the hydrogen chloride gas:
Write the chemical equation.
Chapter: [0.081] Hydrogen Chloride [0.1] Practical Work
Distinguish between the following:
Dilute HCl and dilute HNO3 [using silver nitrate solution]
Chapter: [0.081] Hydrogen Chloride
How will you distinguished between dilute HCl and dilute H2SO4 using lead nitrate solution?
Chapter: [0.081] Hydrogen Chloride
Give one word for the following statement:
Naturally occurring minerals from which metals are extracted.
Chapter: [0.07] Metallurgy
Give one word for the following statement:
Organic compounds having the same molecular formula but different Structural formula.
Chapter: [0.09] Organic Chemistry
A, B and C are the chemical properties of sulphuric acid:
A. Oxidizing agent
B. Dehydrating agent
C. Non-volatile acid
Match the following equations 1 to 3 to the above chemical properties of sulphuric acid.
1. \[\ce{KNO3 + H2SO4 -> KHSO4 + HNO3}\]
2. \[\ce{C12H22O11 -> 12C + 11H2O}\]
3. \[\ce{S + 2H2SO4 -> 2H2O + 3SO2}\]
Chapter: [0.084] Sulphuric Acid
Study and complete the following table:
| Homologous series | Alkane | Alkyne |
| General formula | CnH2n+2 | 1. ______ |
| IUPAC name | 2. ______ | Ethyne |
| Common name | Marsh gas | 3. ______ |
Chapter: [0.09] Organic Chemistry
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