# Question Bank Solutions for ICSE Class 10 - CISCE - Chemistry

Subjects
Topics
Subjects
Popular subjects
Topics
Chemistry
< prev 1 to 20 of 4549 next >

Identify the substance underlined, in the following case

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

[0.06] Electrolysis
Chapter: [0.06] Electrolysis
Concept: Electrolysis > Electrolytes and Non-Electrolytes

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

[0.06] Electrolysis
Chapter: [0.06] Electrolysis
Concept: Electrolysis > Electrolytes and Non-Electrolytes

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

[0.06] Electrolysis
Chapter: [0.06] Electrolysis
Concept: Electrolysis > Electrolytes and Non-Electrolytes

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

[0.05] Mole Concept and Stoichiometry
Chapter: [0.05] Mole Concept and Stoichiometry
Concept: Molar Volume of a Gas at S.T.P

Name the following:

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

[0.06] Electrolysis
Chapter: [0.06] Electrolysis
Concept: Electrolysis > Electrolytes and Non-Electrolytes

A gas of mass 32 gms has a volume of 20 liters at S.T.P. Calculate the gram molecular weight of the gas.

[0.05] Mole Concept and Stoichiometry
Chapter: [0.05] Mole Concept and Stoichiometry
Concept: Molar Volume of a Gas at S.T.P

How much Is Calcium oxide formed when 82g of calcium nitrate is heated? Also, find the volume of nitrogen dioxide evolved :

2Ca(NO3)2 → 2CaO+4NO2+O2

(Ca = 40 , N = 14,O = 16)

[0.05] Mole Concept and Stoichiometry
Chapter: [0.05] Mole Concept and Stoichiometry
Concept: Molar Volume of a Gas at S.T.P

Give reasons why Although copper is a good conductor of electricity, it is a non-electrolyte.

[0.06] Electrolysis
Chapter: [0.06] Electrolysis
Concept: Electrolysis > Electrolytes and Non-Electrolytes

If 6 liters of hydrogen and 4 liters of chlorine are mixed and exploded and if water is added to the gases formed, find the volume of the residual gas.

[0.05] Mole Concept and Stoichiometry
Chapter: [0.05] Mole Concept and Stoichiometry
Concept: Molar Volume of a Gas at S.T.P

Differentiate between the terms strong electrolyte and weak electrolyte. (stating any two differences)

[0.06] Electrolysis
Chapter: [0.06] Electrolysis
Concept: Electrolysis > Electrolytes and Non-Electrolytes

Choose the correct answer from the options given below:

When fused lead bromide is electrolysed, we observe

A. A silver grey deposit at the anode and a reddish brown deposit at the cathode

B. A silver grey deposit at the cathode and a reddish brown deposit at the anode

C. A silver grey deposit at the cathode and reddish brown fumes at the anode

D. Silver grey fumes at the anode and reddish brown fumes at the cathode

[0.06] Electrolysis
Chapter: [0.06] Electrolysis
Concept: Electrolysis > Electrolytes and Non-Electrolytes

Give one word or phrase for the following:

The ratio of the mass of a certain volume of gas to the mass of an equal volume of hydrogen under the same conditions of temperature and pressure.

[0.05] Mole Concept and Stoichiometry
Chapter: [0.05] Mole Concept and Stoichiometry
Concept: Molar Volume of a Gas at S.T.P

Oxygen oxidizes ethyne to carbon dioxide and water as shown by the equation:

2C2H2 + 5O2 → 4CO2 + 2H2O

What is a volume of ethyne gas at STP required to produce 8.4 dm3 of carbon dioxide at STP? [H = 1, C = 12, O = 16]

[0.05] Mole Concept and Stoichiometry
Chapter: [0.05] Mole Concept and Stoichiometry
Concept: Molar Volume of a Gas at S.T.P

A cylinder contains 68 g of ammonia gas at STP.

1) What is the volume occupied by this gas?

2) How many moles of ammonia are present in the cylinder?

3) How many molecules of ammonia are present in the cylinder?

[N = 14, H = 1]

[0.05] Mole Concept and Stoichiometry
Chapter: [0.05] Mole Concept and Stoichiometry
Concept: Molar Volume of a Gas at S.T.P

The electrolysis of acidified water is an example of :

(A) Reduction

(B) Oxidation

(C) Redox reaction

(D) Synthesis

[0.06] Electrolysis
Chapter: [0.06] Electrolysis
Concept: Electrolysis > Electrolytes and Non-Electrolytes

Write a balanced chemical equation for the reaction of sodium hydroxide solution with iron (III) chloride solution

[0.03] Study of Acids, Bases and Salts
Chapter: [0.03] Study of Acids, Bases and Salts
Concept: Acids

State one relevant observation for the following:

At the anode, when molten lead bromide is electrolyzed using graphite electrodes.

[0.06] Electrolysis
Chapter: [0.06] Electrolysis
Concept: Electrolysis > Electrolytes and Non-Electrolytes

Name the gas that is produced in each of the given case :

At the anode during the electrolysis of acidified water.

[0.06] Electrolysis
Chapter: [0.06] Electrolysis
Concept: Electrolysis > Electrolytes and Non-Electrolytes

Electrolysis of aqueous sodium chloride solution will form ________ at the cathode. (Hydrogen gas / Sodium metal)

[0.06] Electrolysis
Chapter: [0.06] Electrolysis
Concept: Electrolysis > Electrolytes and Non-Electrolytes

Three solutions P, Q and R have pH value of 3.5, 5.2 and 12.2 respectively. Which one of these is a:

1) Weak acid?

2) Strong alkali?

[0.03] Study of Acids, Bases and Salts
Chapter: [0.03] Study of Acids, Bases and Salts
Concept: Acids
< prev 1 to 20 of 4549 next >