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Important Questions for ICSE Class 10 - CISCE - 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: Sulphuric Acid - Oxidizing Agent When Concentrated

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

Appears in 2 question papers
Chapter: [0.01] Periodic Properties and Variations of Properties:- Physical and Chemical
Concept: 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: Concept of 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:- Use of Ammonium Hydroxide and Sodium Hydroxide
Concept: Formation and Colour of Hydroxide Precipitated for Solutions of Salts of Ca, Fe, Cu, Zn and Pb

Name the following:

An ore of zinc containing its sulphide.

Appears in 2 question papers
Chapter: [0.07] Metallurgy
Concept: Metals and Their Alloys > Common Ores of Iron, Aluminium and Zinc

State the main components of the following alloys:

Brass

Appears in 2 question papers
Chapter: [0.07] Metallurgy
Concept: Metals and Their Alloys > Common Ores of Iron, Aluminium and Zinc

State the main components of the following alloys:

Duralumin

Appears in 2 question papers
Chapter: [0.07] Metallurgy
Concept: Metals and Their Alloys > Common Ores of Iron, Aluminium and Zinc

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

Appears in 2 question papers
Chapter: [0.07] Metallurgy
Concept: Metals and Nonmetals > Concept of Metals and Non-metals

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

Appears in 2 question papers
Chapter: [0.08199999999999999] Nitric Acid
Concept: Nitric Acid - Laboratory Method of Preparation of Nitric Acid from Potassium Nitrate Or Sodium Nitrate

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: [0.08199999999999999] Nitric Acid
Concept: Nitric Acid as an Oxidizing Agent.

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

Appears in 2 question papers
Chapter: [0.083] Hydrogen Chloride
Concept: Hydrogen Chloride - Acidic Properties of Its Solution

Complete the following equations : 
  S + conc.HNO→ 

Appears in 2 question papers
Chapter: [0.084] Sulphuric Acid
Concept: Concept of 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: Alcohols > Concept of Ethanol

Give the structural formulae of Ethanoic acid

Appears in 2 question papers
Chapter: [0.09] Organic Chemistry
Concept: Structure of Compounds with Single, Double and Triple Bonds

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 Properties and Variations of Properties:- Physical and Chemical
Concept: Periodic Properties - Ionisation Potential

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

Appears in 1 question paper
Chapter: [0.01] Periodic Properties and Variations of Properties:- Physical and Chemical
Concept: Relation Between Atomic Number for Light Elements (Proton Number) and Atomic Mass for Light Elements

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 Properties and Variations of Properties:- Physical and Chemical
Concept: Periodicity on the Basis of Atomic Number for Elements

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 Properties and Variations of Properties:- Physical and Chemical
Concept: 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 Properties and Variations of Properties:- Physical and Chemical
Concept: Periodic Properties - Ionisation Potential

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

F, Cl, Br (Increasing electronegativity)

Appears in 1 question paper
Chapter: [0.01] Periodic Properties and Variations of Properties:- Physical and Chemical
Concept: Periodic Properties - Electronegativity
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