Curriculum

Ncert-Class 10 Science - Chemistry

Chapter 1 - Chemical Reaction and Equation

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Short Notes -Class10-Chemistry- Chapter 1 - Chemical Reaction and Equation

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Short Notes 2-Class 10 - Science -Chemistry -Chapter 1 - Chemical Reaction and Equation

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PRACTICE TEST 1 -Class 10 - Science -Chemistry -Chapter 1 - Chemical Reaction and Equation

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PRACTICE TEST 2-Class 10 – Science -Chemistry -Chapter 1 – Chemical Reaction and Equation

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Very Short Answer-Class 10 - Science -Chemistry -Chapter 1 - Chemical Reaction and Equation

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Short Answer -Class 10 - Science -Chemistry -Chapter 1 - Chemical Reaction and Equation

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Long Answer -Class 10 - Science -Chemistry -Chapter 1 - Chemical Reaction and Equation

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POINTS TO REMEMER-Class 10 - Science -Chemistry -Chapter 1 - Chemical Reaction and Equation

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chapter 2- Acids, Bases and Salt

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KEY NOTES -Class 10 - Science -Chemistry -chapter 2- Acids, Bases and Salt

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KEY NOTES -pH Scale-Class 10 - Science -Chemistry -chapter 2- Acids, Bases and Salt

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PRACTICE TEST -1-Class 10 - Science -Chemistry -chapter 2- Acids, Bases and Salt

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PRACTICE TEST -2-Class 10 – Science -Chemistry -chapter 2- Acids, Bases and Salt

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VERY SHORT ANSWER -Class 10 - Science -Chemistry -chapter 2- Acids, Bases and Salt

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SHORT ANSWER -Class 10 - Science -Chemistry -chapter 2- Acids, Bases and Salt

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LONG ANSWER-Class 10 - Science -Chemistry -chapter 2- Acids, Bases and Salt

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POINTS TO REMEMER-Class 10 - Science -Chemistry -chapter 2- Acids, Bases and Salt

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Chapter 3 – Metals and Non-metals

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KEY NOTES 1-Class 10 - Science -Chemistry -Chapter 3 – Metals and Non-metals

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KEY NOTES 2-Class 10 - Science -Chemistry -Chapter 3 – Metals and Non-metals

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KEY NOTES - iconic compound- Class 10 - Science -Chemistry -Chapter 3 – Metals and Non-metals

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PRACTICE TEST 1-Class 10 - Science -Chemistry -Chapter 3 – Metals and Non-metals

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PRACTICE TEST 2-Class 10 – Science -Chemistry -Chapter 3 – Metals and Non-metals 2

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VERY SHORT ANSWER-Class 10 - Science -Chemistry -Chapter 3 – Metals and Non-metals

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SHORT ANSWER-Class 10 - Science -Chemistry -Chapter 3 – Metals and Non-metals

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Long ANSWER-Class 10 - Science -Chemistry -Chapter 3 – Metals and Non-metals

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POINTS TO REMEMER-Class 10 - Science -Chemistry -Chapter 3 – Metals and Non-metals a

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Chapter 4 – Carbon and its Compounds

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KEY NOTES - Carbon-Class 10 - Science -Chemistry -Chapter 4 – Carbon and its Compounds

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KEY NOTES - Chemical Properties -Class 10 - Science -Chemistry -Chapter 4 – Carbon and its Compounds

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PRACTICE TEST- 1-Class 10 - Science -Chemistry -Chapter 4 – Carbon and its Compounds

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PRACTICE TEST -2-Class 10 - Science -Chemistry -Chapter 4 – Carbon and its Compounds

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VERY SHORT ANSWER -Class 10 - Science -Chemistry -Chapter 4 – Carbon and its Compounds

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SHORT ANSWER -Class 10 - Science -Chemistry -Chapter 4 – Carbon and its Compounds

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LONG ANSWER -Class 10 - Science -Chemistry -Chapter 4 – Carbon and its Compounds

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POINTS TO REMEMBER-Class 10 - Science -Chemistry -Chapter 4 – Carbon and its Compounds

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Assertion and Reason chemistry

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Assertion and Reason-Class 10 - Science -Chemistry

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CASE BASED QUESTIONS

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CASE BASED QUESTION-Class 10 - Science -Chemistry

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PRACTICE TEST -2-Class 10 – Science -Chemistry -chapter 2- Acids, Bases and Salt

Class 10 - ACID , BASES- Chemistry Mock Test.

This Test Consist of 20 Questions

Total Time - 20 -Minutes

During the preparations of hydrogen chloride gas on a humid day, the gas is usually passed through the guard tube containing calcium chloride. the role of the calcium chloride taken in the guard tube is to ?

Moisten the gas.

Absorb moisture from the gas.

Absorb Cl- ions from the evolved gas.

Absorb the evolved gas.

None

Which of the following statements is correct about an aqueous solution of an acid and a base ?

Higher the pH, weaker the acid, and Lower the pH, stronger the base.

Higher the pH, stronger the acid, and Lower the pH, weaker the base.

Higher the pH, stronger the acid, and Lower the pH, stronger the base.

Higher the pH, weaker the acid, and Lower the pH, weaker the base.

None

Which of the following metal is not lustrous?

Cesium

Diamond

Mercury

Gallium

None

Payal is writing some statements, choose the correct statement ?

Phenolphthalein indicator gives colourless in acid solution, and pink colour in basic solution.

All the Answers

Sodium hydroxide solution turns red litmus to blue, so sodium hydroxide solution is basic in nature.

Methyl orange indicator gives red colour in acid solution, and yellow colour in basic solution.

None

Which of the following statements is correct about the analogous organ?

The organs of which both structure and work are the same.

The organs of which both structure and work are different.

The organs whose work are the same but structure is different.

None of the these

None

A student has dipped blue litmus paper into a beaker containing a liquid. Its colour turned red. Which of the following is responsible for this change?

Acidic nature of the liquid in the beaker

Presence of a red pigment in the liquid

Acidic nature of the litmus paper

Basic nature of the liquid

None

Setting of Plaster of Paris takes place due to

Equal volumes of hydrochloric acid and sodium hydroxide solutions of same concentration are mixed and the pH of the resulting solution is checked with a pH paper. What would be the colour obtained ?

What is a balanced chemical equation?

The equation in which the number of the molecule is equal to the number of the product.

The equation in which the size of the reactant is equal to the size of the product.

The equation in which the number of reactants is equal to the number of products.

The equation in which the number of atoms of the reactant is equal to the number of atoms of the product.

None

10.

Many salts absorbs water from atmosphere. This property is called

deliquescence

None

11.

Lime water reacts with chlorine to give

12.

If a few drops of a concentrated acid accidentally spills over the hand of a student, what should be done?

Wash the hand with saline solution.

After washing with plenty of water, apply solution of sodium hydroxide on the hand.

Wash the hand immediately with plenty of water and apply a paste of sodium hydrogencarbonate.

Neutralise the acid with a strong alkali.

None

13.

Which of the following metal is not reactive metal?

Sodium

Gold

Aluminum

Potassium

None

14.

When hydrogen chloride gas is prepared on a humid day, the gas is usually passed through the guard tube containing calcium chloride. The role of calcium chloride taken in the guard tube is to ?

moisten the gas

absorb Cl– ions from the evolved gas

absorb moisture from the gas

absorb the evolved gas

None

15.

Sodium Hydrogen Carbonate, When added to acetic acid, evolves a gas. which of the following statements are true about the gas evolved ?

It turns lime water milky, and it has a pungent odour.

It extinguishes a burning splinter, it dissolves in a solution of sodium hydroxide, and it has a pungent odour.

It turns lime water milky, and it extinguishes a burning splinter, and it dissolves in a solution of sodium hydroxide.

It turns lime water milky, and it extinguishes a burning splinter.

None

16.

Which of the following statements is correct about an aqueous solution of an acid and of a base?
(i) Higher the pH, stronger the acid
(ii) Higher the pH, weaker the acid
(in) Lower the pH, stronger the base
(iv) Lower the pH, weaker the base

(ii) and (iv)

(ii) and (iii)

(i) and (iii)

(i) and (iv)

None

17.

What happens when a solution of an acid is mixed with a solution of a base in a test tube?
(i) Temperature of the solution decreases
(ii) Temperature of the solution increases
(iii) Temperature of the solution remains the same
(iv) Salt formation takes place

(ii) only

(i) and (iii)

(i) and (iv)

(ii) and (iv)

None

18.

In the table given below, match the bases in the first column with their applications mentioned in the second column.

(A) Calcium hydroxide	(i) Antacid
(B) Ammonium hydroxide	(ii) Soap
(C) Sodium hydroxide	(iii) Whitewash
(D) Magnesium hydroxide	(iv) Window cleaner

(A) - (iii), (B) - (iv), (C) - (ii), (D) - (i)

(A) - (iii), (B) - (ii), (C) - (iv), (D) - (i)

(A) - (ii), (B) - (iv), (C) - (iii), (D) - (i)

(A) - (ii), (B) - (i), (C) - (iv), (D) - (iii)

None

19.

To protect tooth decay, one is advised to brush the teeth regulary. The ingredient of the paste which checks tooth decay is:

20.

In terms of acidic strength, which one of the following is in the correct increasing order?

Acetic acid < Water < Hydrochloric acid

Water < Hydrochloric acid < Acetic acid

Hydrochloric acid < Water < Acetic acid

Water < Acetic acid < Hydrochloric acid

None

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