Showing posts with label class10-chemistry. Show all posts
Showing posts with label class10-chemistry. Show all posts

Saturday 8 April 2023

Best Books for Science Class 10 #eduvictors #class10Science #ScienceBooks

 Best Books for Science Class 10

Best Books for Science Class 10 #eduvictors #class10Science #ScienceBooks


Class 10 is a crucial turning point in a student's academic career, and passing the CBSE exams depends on possessing the correct reference books.

When choosing science books for standard 10 students, it is important to consider a few key factors, including the level of difficulty, relevance to the curriculum, and engagement level. Here are some tips to help you choose the best science books for standard 10 students:

Wednesday 22 March 2023

Class 10 Chemistry - Different types of Chemical Reactions #class10Science #class10Chemistry #eduvictors

Class 10 Chemistry - Different types of Chemical Reactions

Class 10 Chemistry - Different types of Chemical Reactions #class10Science #class10Chemistry #eduvictors


Question: What are different types of chemical reactions?

Answer: 

There are several different types of chemical reactions, including:

Wednesday 1 March 2023

CBSE Class 10 - Case Study Based Question #class10Science #class10Chemistry #eduvictors

CBSE Class 10 - Case Study Based Question

CBSE Class 10 - Case Study Based Question #class10Science #class10Chemistry #eduvictors


Study the following case study and answer the questions given below:

Water is a simple molecule consisting of one oxygen atom bonded to two different hydrogen atoms. Because of the higher electronegativity of the oxygen atom, the bonds are polar covalent (polar bonds). The oxygen atom attracts the shared electrons of the covalent bonds to a significantly greater extent than the hydrogen atoms. The molecule has a bent structure, the H—O—H bond angle is about 105°.

Wednesday 15 February 2023

CBSE Class 10 - Chemistry - Redox Reactions - Questions and Answers #class10Chemistry #class10Science #cbseclass10

CBSE Class 10 - Chemistry - Redox Reactions - Questions and Answers

CBSE Class 10 - Chemistry - Redox Reactions - Questions and Answers #class10Chemistry #class10Science #cbseclass10


Q1. What is oxidation?

Answer: Addition of oxygen or removal of hydrogen from a compound is known as oxidation.

Elements or compounds in which oxygen or non-metallic element is added or hydrogen or metallic element is removed are called to be oxidized.

Thursday 24 November 2022

CBSE Class 10 - Chemistry - Metals and Non-Metals - Important Points You Should Know #eduvictors #class10Science #Metals #NonMetals

Metals and Non-Metals - Important Points You Should Know 

CBSE Class 10 - Chemistry

CBSE Class 10 - Chemistry - Metals and Non-Metals - Important Point You Should Know #eduvictors #class10Science #Metals #NonMetals


1. At present about 118 elements are known.

2. Elements can be divided into two main groups: metals and non-metals.

3. Elements which form positive ions by losing electrons are called metals. Thus, metals are the elements which have the tendency to lose electrons.

Tuesday 2 August 2022

Class 10 Chemistry - Acids and Their Properties #class10Chemistry #eduvictors

Class 10 Chemistry - Acids and Their Properties

Class 10 Chemistry - Acids and Their Properties #class10Chemistry #eduvictors

In this video and subsequent videos, we will focus on Acids and its properties. We'll learn about 

- What are Acids?

- What is the role of acid in our life?

- How acids are classified?

Saturday 22 January 2022

CBSE Class 10 Chemistry - Carbon and Its Compounds - Very Short Answer Based Questions on Allotropes (Part -2) #class10Chemistry #cbseTerm2 #eduvictors #carbonallotropes

CBSE Class 10 Chemistry - Carbon and Its Compounds - Very Short Answer Based Questions on Allotropes (Part -2)

CBSE Class 10 Chemistry - Carbon and Its Compounds - Very Short Answer Based Questions on Allotropes (Part -2) #class10Chemistry #cbseTerm2 #eduvictors #carbonallotropes

Q1: What is the atomic number of a carbon atom?

Answer: 6


Q2: How many valence electrons are present in a carbon atom?

Answer: 4 (electronic configuration is K:2 L:4)


Q3: What are allotropes?

Answer: The property due to which one element exists in more than one form, which differs in physical properties but has similar chemical properties. These forms of an element are called allotropes.

Wednesday 8 September 2021

CBSE Class 8 Chemistry - Metals and Non-Metals (MCQs) (#class8Chemistry)(#class8Science)(#eduvictors)

CBSE Class 8 Chemistry - Metals and Non-Metals (MCQs) 

CBSE Class 8 Chemistry - Metals and Non-Metals (MCQs)  (#class8Chemistry)(#class8Science)(#eduvictors)

Q1: All metals are solids except: 

(a) Sodium

(b) Calcium

(c) Mercury

(d) Copper



Q2: Which of the following metal does not react with dilute Hydrochloric acid?

(a) Iron

(b) Sodium

(c) Magnesium

(d) Copper

Tuesday 7 September 2021

Class 10 Chemistry - Acid, Bases and Salts (Worksheet) (#class10Chemistry)(#cbse2021)(#cbseTerm1)(#eduvictors)(#class10WorkSheet)

Class 10 Chemistry - Acid, Bases and Salts (Worksheet)

Class 10 Chemistry - Acid, Bases and Salts (Worksheet) (#class10Chemistry)(#cbse2021)(#cbseTerm1)(#eduvictors)(#class10WorkSheet)


Fill in the blanks with suitable words


1. An acid is a compound which when dissolved in water gives _________ ions as the only _________ ions.


2. Higher the pH value of a solution, the more __________ it is.


3. pH value of lemon juice is _________ than 7.

Saturday 5 June 2021

Chemistry - Colours Of Compounds For CBSE Class 12, 11, 10 and 9 (#class12Chemistry)(#class11Chemistry)(#ntse)(#neet)(#eduvictors)

 Chemistry - Colours Of Compounds For CBSE Class 12, 11, 10 and 9 

Chemistry - Colours Of Compounds For CBSE Class 12, 11, 10 and 9  (#class12Chemistry)(#class11Chemistry)(#ntse)(#neet)(#eduvictors)



Salts/Compounds     Colour

1. Potassium dichromate, K₂Cr₂O₇ Orange

2. Potassium permanganate, KMnO₄ Violet

3. Ferric tetra-oxide, Fe₃O₄ Black

4. Ferrous sulphate, FeSO₄.7H₂O Green

5. Ferric sulphate, Fe₂(SO₄)₃ Yellow

6. Ferric hydroxide, Fe(OH)₂ Green

Wednesday 7 April 2021

CBSE Class 10 - Chemistry - Periodic Classification Of Elements (Very Short Answer Based Questions)(#class10Chemistry)(#cbsenotes)(#eduvictors)

Class 10 - Chemistry - Periodic Classification Of Elements (Very Short Answer Based Questions)

CBSE Class 10 - Chemistry - Periodic Classification Of Elements (Very Short Answer Based Questions)(#class10Chemistry)(#cbsenotes)(#eduvictors)


Q1: What is the basis of classification of elements in the modern periodic table?

Answer: Atomic number


Q2: The Law of Octaves was applicable only upto which element?


Answer: Calcium


Q3: Which important property did Mendleev use to classify the elements in the periodic Table?

Answer: He used atomic masses of elements in classifying elements.


Monday 15 March 2021

CBSE Class 10 - Chemistry - Acids, Bases and Salts - Assertion Reason Based Questions(#class10Chemistry)(#Class10Science)(#eduvictors)

CBSE Class 10 - Chemistry - Acids, Bases and Salts - Assertion Reason Based Questions

CBSE Class 10 - Chemistry - Acids, Bases and Salts - Assertion Reason Based Questions(#class10Chemistry)(#Class10Science)(#eduvictors)


Assertion and Reasoning based questions are a bit tricky. You should be able to distinguish whether the assertion is well connected to the reason or these are just random facts. Read both statements carefully, and check if both statements are factually or logically correct or not. If both are correct, then try to check if both are well connected to each other or not.

The questions below consist of statements of an Assertion and a Reason. Use the following key to choose an appropriate answer:


(a) Both A and R are true and R is the correct explanation of A.

(b) Both A and R are true but R is not the correct explanation of A.

(c) A is true but R is false.

(d) A is false but R is true.


Q1: Assertion (A) : Acids are those substances which turn blue litmus solution red.
       Reason (R)    : Acids give more OH⁻ ions in aqueous solution.

Monday 22 February 2021

CBSE Class 10 - Chemistry - Acids, Bases and Salts - About Indicators (Q & A) Part-1 (#eduvictors)(#class10Chemistry)(#class10Science)

CBSE Class 10 - Chemistry - Acids, Bases and Salts (Q & A) Part-1

CBSE Class 10 - Chemistry - Acids, Bases and Salts (Q & A) Part-1 (#eduvictors)(#class10Chemistry)(#class10Science)

Based on chemical properties, all compounds can be classified as acids, bases and salts. To identify acids and bases, indicators are used. This video talks about types of indicators i.e. natural, synthetic and olfactory. Examples of indicators and related questions are also covered.


Here follows the video:

Sunday 17 January 2021

CBSE Class 10 - Chemistry - Chemical Reactions and Equations (Q & A) Part-4 (#class10Chemistry)(#eduvictors)(#cbse2020)

CBSE Class 10 - Chemistry - Chemical Reactions and Equations (Q & A) Part-4

CBSE Class 10 - Chemistry - Chemical Reactions and Equations (Q & A) Part-4 (#class10Chemistry)(#eduvictors)(#cbse2020)

The first chapter of Chemistry talks about chemical reactions and equations. In a chemical reaction, reactants are transformed into products. In this series, the part-4 video discusses:

- corrosion

- examples of corrosion (good vs bad)

- methods to prevent corrosion

- rancidity

- methods to prevent rancidity

Tuesday 12 January 2021

Class 10 Chemistry Sample Question Paper 2020-21 (#class10Chemistry)(#cbse2020)(#eduvictors)

  Class 10 Chemistry Sample Question Paper 2020-21

Class 10 Chemistry Sample Question Paper 2020-21 (#class10Chemistry)(#cbse2020)(#eduvictors)


Learning is a continual process. To improve scores, the best way is to learn and practice. Solving question papers help students to evaluate their knowledge and familarise with different types of question patterns being asked in the examination.

Eduvictors provides CBSE Previous Year Papers and Sample Question Papers for Class 10 Maths, Science, Social, English, Hindi and Sanskrit with/without solutions to help students in their board exam preparation.

1. Buy CBSE All In One Science Class 10 for 2021 Exam 


Here attached the Chemistry Sample Question Paper (2020-2021) for your self-evaluation. 

Friday 25 December 2020

Class 10 Science - Question Bank - Very Short Answers Based Questions (Unsolved)(#class10Science)(#cbse2020)(#eduvictors)

Class 10 - SCIENCE - Question Bank - Very Short Answers Based Questions (Unsolved)

Class 10 Science - Question Bank - Very Short Answers Based Questions (Unsolved)(#class10Science)(#cbse2020)(#eduvictors)


1. Why does not a wall immediately acquire a white colour when a coating of slaked lime is applied on it ?


2. Define displacement reaction with one example.


3. Identify the most reactive and least reactive metal : Al, K, Ca, Au.


4. Which of the following is a combination reaction and which is a displacement reaction ?

(a) Cl₂ + 2KI ——–> 2KCl + I₂

(b) 2K + Cl₂ ——–> 2KCl.


5. What is the difference between the following two reactions ?

(a) Mg + 2HCl ——–> MgCl2 + H2

(b) NaOH + HCl ——–> NaCl + H2O.


6. Identify the compound which is oxidised in the following reaction

H₂S + Br₂ ———–> 2HBr + S.


7. What happens chemically when quick lime is added to water ?

Thursday 17 December 2020

CBSE Class 10 - Chemistry - METALS AND NON-METALS (Very Short Answer Based Questions) #class10Chemistry #Metals #NonMetals #eduvictors #cbse2020

CBSE Class 10 - Chemistry - METALS AND NON-METALS (Very Short Answer Based Questions) 

CBSE Class 10 - Chemistry - METALS AND NON-METALS (Very Short Answer Based Questions) #class10Chemistry #Metals #NonMetals #eduvictors #cbse2020

Q1. A green layer is gradually formed on a copper plate left exposed to air for a week in a  bathroom. What could this green substance be? 

Answer. It is due to the formation of basic copper carbonate [CuCO₃.Cu(OH)₂].


Q2. Why are elements of Group IA i.e. H, Li, Na, K, Cs and Fr called alkali metals?

Answer. Because oxides of these elements dissolve in water to give alkali or soluble hydroxides.  


Q3. A non-metal X exists in two different forms Y and Z. Y is the hardest natural substance,   whereas Z is a good conductor of electricity. Identify X, Y and Z. 

Answer. ‘X’ is carbon, ‘Y’ is diamond as it is the hardest natural substance and ‘Z’ is graphite as   it is good conductor of electricity. 

Thursday 1 October 2020

CBSE Class 10 Chemistry - Chapter 1: Chemical Reactions and Equations (Part-3)(#class10Chemistry)(#eduvictors)(#chemicalreactions)

 CBSE Class 10 Chemistry - Chapter 1: Chemical Reactions and Equations (Part-3)(Q & A)

CBSE Class 10 Chemistry - Chapter 1: Chemical Reactions and Equations (Part-3)(#class10Chemistry)(#eduvictors)(#chemicalreactions)

The first chapter of Chemistry talks about chemical reactions and equations. In a chemical reaction, reactants are transformed into products. In this series, the part-3 video discusses types of chemical reactions.

Following questions are covered:

Q1: What are the important types of chemical reactions.

Q2: What are combination reactions? Give examples.

Q3: Hydrogen burns in oxygen to form water. Identify the type of reaction.

Thursday 17 September 2020

CBSE Class 10 - Chemistry - pH related Questions and Answers (Acids and Bases) (#eduvictors)(#class10Chemistry)(#class10NCERT)(#cbseClass10)

 pH related Questions and Answers

CBSE Class 10 - Chemistry 

CBSE Class 10 - Chemistry - pH related Questions and Answers (Acids and Bases) (#eduvictors)(#class10Chemistry)(#class10NCERT)(#cbseClass10)


Chapter: Acids and Bases


Q1: How is the strength of acid and base can be estimated?

Answer: Strength of acid and base can be estimated by using universal indicator.


Q2: What is a universal indicator?

Answer: Universal indicator is used to estimate the strength of an acid or a base. It is a mixture of several indicators. It shows different colours at different concentrations of H⁺ ions in the solution.


Q3: What is pH value of a solution?

Answer: The pH of a solution is inversely proportional to the concentration of hydrogen ions in it. Mathematically the pH of a solution is inversely proportional to the concentration of hydrogen ions in it. pH is a pure number, it has no units.

Saturday 15 August 2020

Class 10 - Chemistry - Carbon and Its Compounds - Very Short Answer Based Questions (VSQA)(#eduvictors)(#class10Chemistry)(#cbseClass10)

Carbon and Its Compounds - Very Short Answer Based Questions (VSQA)

Class 10 - Chemistry 
Class 10 - Chemistry - Carbon and Its Compounds - Very Short Answer Based Questions (VSQA)(#eduvictors)(#class10Chemistry)(#cbseClass10)


Very Short Answer Based Questions (VSQA)


Q1: Define catenation.

Answer: The property of a carbon atom to link with other carbon atoms is known as catenation.


Q2: What is isomerism? .

Answer: Isomerism is a phenomenon in which compounds have the same molecular formula but different structural formula. ;


Q3: What are hydrocarbons?

Answer: The compounds containing carbon and hydrogen are known as hydrocarbons. For example, methane (CH₄).