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ICSE Class 10 - CISCE Important Questions for Chemistry

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

Appears in 3 question papers
Chapter: [0.084] Sulphuric Acid
Concept: Chemical Properties of Sulphuric Acid

 The tendency of an atom to attract electrons itself when combined in a covalent compound. 

Appears in 2 question papers
Chapter: [0.01] Periodic Table, Periodic Properties and Variations of Properties
Concept: Periodic Properties > Periodic Properties: Electronegativity

The covalent bond in which the electrons are shared equally between the combining atoms. 

Appears in 2 question papers
Chapter: [0.02] Chemical Bonding
Concept: The Covalent Bond

State your observations when Barium chloride solution is mixed with Sodium Sulphate Solution.

Appears in 2 question papers
Chapter: [0.04] Analytical Chemistry
Concept: Action of Alkalis on Metal Oxides

Name the following:

An ore of zinc containing its sulphide.

Appears in 2 question papers
Chapter: [0.07] Metallurgy
Concept: Types of Separation or Concentration of an Ore

State the main components of the following alloys:

Brass

Appears in 2 question papers
Chapter: [0.07] Metallurgy
Concept: Types of Separation or Concentration of an Ore

State the main components of the following alloys:

Duralumin

Appears in 2 question papers
Chapter: [0.07] Metallurgy
Concept: Types of Separation or Concentration of an Ore

Write a balanced chemical equation for the action of heat on aluminium hydroxide.

Appears in 2 question papers
Chapter: [0.07] Metallurgy
Concept: Types of Elements: Non-metal

State your observations when Dilute Hydrochloric acid is added to Lead nitrate solution and the mixture is heated.

Appears in 2 question papers
Chapter: [0.081] Hydrogen Chloride
Concept: General Preparation of Hydrogen Chloride Gas

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

Appears in 2 question papers
Chapter: [0.083] Nitric Acid
Concept: Laboratory Preparation of Nitric Acid

Fill in the blanks using the appropriate words given below :

(Sulphur dioxide, nitrogen dioxide, Nitric oxide, Sulphuric acid)

Cold, dilute nitric acid reacts with copper to give ___________.

Appears in 2 question papers
Chapter: [0.083] Nitric Acid
Concept: Manufacture of Nitric Acid

Complete the following equations : 
  S + conc.HNO→ 

Appears in 2 question papers
Chapter: [0.084] Sulphuric Acid
Concept: Sulphuric Acid

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

Appears in 2 question papers
Chapter: [0.09] Organic Chemistry
Concept: Ethanol

Give the structural formulae of Ethanoic acid.

Appears in 2 question papers
Chapter: [0.09] Organic Chemistry
Concept: Isomers

Choose the correct answer from the options given below:

A hydrocarbon which is a greenhouse gas is ______.

Appears in 2 question papers
Chapter: [0.09] Organic Chemistry
Concept: Hydrocarbons: Alkanes

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)

Appears in 1 question paper
Chapter: [0.01] Periodic Table, Periodic Properties and Variations of Properties
Concept: Periodic Properties > Periodic Properties: Ionisation Potential (Ionisation Energy)

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

Appears in 1 question paper
Chapter: [0.01] Periodic Table, Periodic Properties and Variations of Properties
Concept: Periodic Properties

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.

Appears in 1 question paper
Chapter: [0.01] Periodic Table, Periodic Properties and Variations of Properties
Concept: Periodic Properties

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

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

Appears in 1 question paper
Chapter: [0.01] Periodic Table, Periodic Properties and Variations of Properties
Concept: Periodic Properties > Periodic Properties: Electron Affinity

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

Na, Li, K (Increasing Ionisation Energy)

Appears in 1 question paper
Chapter: [0.01] Periodic Table, Periodic Properties and Variations of Properties
Concept: Periodic Properties > Periodic Properties: Ionisation Potential (Ionisation Energy)
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