Chemistry Set 1 2016-2017 (English Medium) ICSE Class 10 Question Paper Solution

The energy required to remove an electron from a neutral isolated gaseous atom and convert it into a positively charged gaseous ion is called ____________. (electron affinity, ionization potential,
electronegativity)

The compound that does not have a lone pair of electrons is __________. (water, ammonia, carbon tetrachloride)

When a metallic oxide is dissolved in water, the solution formed has a high concentration of ____________ ions (H⁺, h₃O⁺, OH^-)

Potassium sulfite on reacting with hydrochloric acid releases _______ gas. (Cl₂, SO₂, H₂S)

The compound formed when ethene reacts with Hydrogen is ________. (CH₄, C₂H₆, C₃H₈)

Choose the correct answer from the options given below:

A chloride which forms a precipitate that is soluble in excess of ammonium hydroxide is:

1) Calcium chloride

2) Ferrous chloride

3) Ferric chloride

4) Copper chloride

Choose the correct answer from the options given below:

If the molecular formula of an organic compound is C₁₀H₁₈ it is:

1) alkene

2) alkane

3) alkyne

4) Not a hydrocarbon

Choose the correct answer from the options given below:

Which of the following is a common characteristic of a covalent compound?

1) high melting point

2) consists of molecules

3) always soluble in water

4) Conducts electricity when it is in the molten state

Choose the correct answer from the options given below

To increase the pH value of a neutral solution, we should add:

1) an acid

2) an acid salt

3) an alkali

4) a salt

Choose the correct answer from the options given below:

Anhydrous iron(III) chloride is prepared by:

1) direct combination

2) simple displacement

3) decomposition

4) neutralization

Identify the substance underlined, in the following case

Cation that does not form a precipitate with ammonium hydroxide but forms one with sodium hydroxide

Identify the substance underlined, in the following case

The electrolyte used for electroplating an article with silver.

Identify the substance underlined, in the following case

The particles present in a liquid such as kerosene, that is a nonelectrolyte.

Identify the substance underlined, in the following case

An organic compound containing – COOH functional group

Identify the substance underlined, in the following case

A solid formed by reaction of two gases, one of which is acidic and the other basic in nature

Write a balanced chemical equation for the following:

Action of cold and dilute Nitric acid on Copper

Write a balanced chemical equation for the following:

Reaction of Ammonia with heated copper oxide.

Write a balanced chemical equation for the following:

Preparation of methane from iodomethane.

Write a balanced chemical equation for the following: 

Action of concentrated sulphuric acid on Sulphur.

Write a balanced chemical equation for the following:

Laboratory preparation of ammonia from ammonium chloride.

State one relevant observation for given reactions:

Addition of ethyl alcohol to acetic acid in the presence of concentrated Sulphuric acid

State one relevant observation for given reactions:

Action of dilute Hydrochloric acid on iron (II) sulfide.

State one relevant observation for given reactions:

Action of Sodium hydroxide solution on ferrous sulfate solution.

State one relevant observation for given reactions:

Burning of ammonia in air.

State one relevant observation for given reactions:

Action of concentrated Sulphuric acid on hydrated copper sulfate

Draw the structural formula for 2, 3 – dimethyl butane

Draw the structural formula for Diethyl ether

Draw the structural formula for Propanoic acid

Select the process from the following which matches the given description.
(calcination, roasting, pulverisation, smelting)

Crushing of the ore into a fine powder.

Select the process from the following which matches the given description.
(calcination, roasting, pulverisation, smelting)

Heating of the ore in the absence of air to a high temperature.

Calculate the number of gram atoms in 4.6 grams of sodium (Na = 23)

Calculate the percentage of water of crystallization in CuSO₄.5H₂O

(H = 1, O = 16, S = 32, Cu = 64)

A compound of X and Y has the empirical formula XY₂. Its vapor density is equal to its empirical formula weight. Determine its molecular formula.

Match the atomic number 2, 4, 8, 15 and 19 with each of the following

1) A solid non metal belonging to the third period.

2) A metal of valency 1.

3) A gaseous element with valency 2.

4) An element belonging to Group 2

5) A rare gas.

Arrange the following as per the instruction given in the brackets:

He, Ar, Ne (Increasing order of the number of electron shells)

Arrange the following as per the instruction given in the brackets:

Na, Li, K (Increasing Ionisation Energy)

Arrange the following as per the instruction given in the brackets :

F, Cl, Br (Increasing electronegativity)

Arrange the following as per the instruction given in the brackets:

Na, K, Li (Increasing atomic size)

State the type of bonding in the following molecule.

Water

State the type of Bonding in the following molecule:

Calcium oxide

How will you distinguish between Ammonium hydroxide and Sodium hydroxide using copper sulphate solution?

How will you distinguish between dilute hydrochloric acid and dilute sulphuric acid using lead nitrate solution?

Identify the salts P and Q from the observations given below:

On performing the flame test salt P produces a lilac coloured flame and its solution gives a white precipitate with silver nitrate solution, which is soluble in Ammonium hydroxide solution.

When dilute HCl is added to a salt Q, a brisk effervescence is produced and the gas turns lime water milky.

When NH4OH solution is added to the above mixture (after adding dilute HCl), it produces a white precipitate which is soluble in excess NH4OH solution.

Draw an electron dot diagram to show the formation of each of the following compounds:

Methane

[H = 1, C = 6, Mg = 12, Cl = 17]

Draw an electron dot diagram to show the formation of each of the following compounds:

Magnesium Chloride

[H = 1, C = 6, Mg = 12, Cl = 17]

State the observations at the anode and at the cathode during the electrolysis of fused lead bromide using graphite electrodes

State the observations at the anode and at the cathode during the electrolysis of copper sulphate solution using copper electrodes.

Select the ion in the following case, that would get selectively discharged from the aqueous mixture of the ions listed below:

\[\ce{SO^2-_4, NO^-_3 {and} OH-}\]

Select the ion in the following case, that would get selectively discharged from the aqueous mixture of the ions listed below:

Pb²⁺, Ag⁺ and Cu²⁺

Certain blank spaces are left in the following table and these are labelled as A, B, C, D
and E. Identify each of them

	Lab preparation of	Reactants used	Products formed	Drying Agent	Method of collection
1	HCl gas	NaCl + H2SO4		conc. H2SO4
2	NH3 gas		Mg(OH)2 NH3

Write balanced chemical equations to show : The oxidizing action of conc. Sulphuric acid on carbon

Write balanced chemical equations to show The behavior of H₂SO₄ as an acid when it reacts with Magnesium

Write balanced chemical equations to show The dehydrating property of conc. Sulphuric acid with sugar.

Write balanced chemical equations to show how SO₃ is converted to Sulphuric acid in the contact process.

Propane burns in air according to the following equation: 

C₃H₈ + 5O₂ → 3CO₂ + 4H₂O

What volume of propane is consumed on using 1000 cm³ of air, considering only 20% of air contains oxygen?

The mass of 11.2 litres of a certain gas at s.t.p. is 24 g. Find the gram molecular mass of the gas

A gas cylinder can hold 1 kg of hydrogen at room temperature and pressure

1) Find the number of moles of hydrogen present.

2) What weight of CO2 can the cylinder hold under similar conditions of temperature and pressure? (H = 1, C = 12, O = 16)

3) If the number of molecules of hydrogen in the cylinder is X, calculate the number of CO₂ molecules in the cylinder under the same conditions of temperature and pressure.

4) State the law that helped you to arrive at the above result.

Write a balanced chemical equation for the preparation of the following salts

Copper carbonate 

Write a balanced chemical equation for the preparation of the following salts

Ammonium sulphate crystals

Give a balanced chemical equation for Action of conc. Nitric acid on Sulphur

Give a balanced chemical equation for Catalytic oxidation of Ammonia

Give a balanced chemical equation for Laboratory preparation of Nitric acid.

Give a balanced chemical equation for Reaction of Ammonia with Nitric acid

Identify the term or substance based on the descriptions given below

Ice like crystals formed on cooling an organic acid sufficiently.

Identify the term or substance based on the descriptions given below:

Hydrocarbon containing a triple bond used for welding purposes.

Identify the term or substance based on the descriptions given below:

The property by virtue of which the compound has the same molecular formula but different structural formulae.

The compound formed where two alkyl groups are linked by  group.

Give a balanced chemical equation for Preparation of ethane from Sodium propionate

Give a balanced chemical equation for Action of alcoholic KOH on bromethane

Name the following :

The process of coating of iron with zinc

Name the following:

An alloy of lead and tin that is used in electrical circuits.

Name the following:

An ore of zinc containing its sulphide.

Name the following:

A metal oxide that can be reduced by hydrogen.

Answer the following questions with respect to the electrolytic process in the extraction of aluminum:

Identify the components of the electrolyte other than pure alumina and the role played by each

Answer the following questions with respect to the electrolytic process in the extraction of aluminum:

Explain why powdered coke is sprinkled over the electrolytic mixture.

Complete the following by selecting the correct option from the choices given:

The metal which does not react with water or dilute H₂SO₄ but reacts with concentrated H₂SO₄ is _________. (Al/Cu/Zn/Fe)

Complete the following by selecting the correct option from the choices given:

The metal whose oxide, which is amphoteric, is reduced to metal by carbon reduction ____________. (Fe/Mg/Pb/Al)

Complete the following by selecting the correct option from the choices given:

The divalent metal whose oxide is reduced to metal by electrolysis of its fused salt is __________. (Al/Na/Mg/K)