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

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.

Class 10 Science Preboard Sample Question Paper (Set-3) 2020-21 (#class10Science)(#eduvictors)(#cbsepapers)

Class 10 Science Preboard Sample Question Paper  (Set-3) 2020-21

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 examination. 

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

1. Buy Most Likely Question Bank - Science: CBSE Class 10 for 2021 Examination

2. Buy 10 Last Years Solved Papers: CBSE Class 10 for 2021 Examination

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

Here attached the Science Sample Question Paper (2020-2021).

Class 10 Science Preboard Sample Question Paper 2020-21 (#class10Science)(#cbsepapers)(#eduvictors)

Class 10 Science Preboard Sample Question Paper  2020-21

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 examination. 

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

1. Buy Most Likely Question Bank - Science: CBSE Class 10 for 2021 Examination

2. Buy 10 Last Years Solved Papers: CBSE Class 10 for 2021 Examination

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

Here attached the Science Sample Question Paper (2020-2021) published by Dir. of Education (Delhi).

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

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:

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

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

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

  Class 10 Chemistry Sample Question Paper 2020-21

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 

2. Buy Oswaal CBSE Question Bank Class 10 Science Book Chapterwise & Topicwise Includes Objective Types & MCQ's (For 2021 Exam)

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

CBSE Class 10 Biology - Control and Coordination - Assertion Reasoning Questions (#class10Biology)(#eduvictors)(#cbse2021)

 CBSE Class 10 Biology - Control and Coordination - Assertion Reasoning Questions

In each of the following questions, a statement of Assertion is given by the corresponding statement of Reason. Of the statements, mark the correct answer as.

(a) If assertion is true and reason is correct explanation of assertion.

(b) If assertion is true but reason is false.

(c) If assertion is false but reason is true.

(d) If both are false.

Q1: 

Assertion: We detect the smell of agarbati (incense stick)

Reason: Smell is detected by phono receptors of nose, which further relay impulses to the brain.

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)

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 ?

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) 

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. 

Class 10 Physics - Electricity - Open Circuit vs Closed Circuit vs Short Circuit (#cbseClass10Physics)(#Class10Physics)(#eduvictors)

Class 10 Physics - Electricity - Open Circuit vs Closed Circuit vs Short Circuit 

Open Circuit

An open circuit implies that the two points are externally disconnected, which is equivalent to a resistance R = ∞ . This means that theoretically no current(I = 0) can flow between the two terminals, regardless of any value of potential difference ( V= 0 to ∞).

Class 10 Science CBSE Sample Question Paper with Marking Scheme 2020-21(#cbse2020)(#class10Science)(#eduvictors)

  Class 10 Science CBSE Sample Question Paper with Marking Scheme 2020-21

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 

2. Buy Oswaal CBSE Question Bank Class 10 Science Book Chapterwise & Topicwise Includes Objective Types & MCQ's (For 2021 Exam)

Here attached the Science Sample Question Paper (2020-2021) along with Marking Scheme (published by CBSE). 

Class 10 Science Sample Question Paper (Periodic Test) 2020-21 (#class10Science)(#cbse)(#Class10QuestionPapers)(#eduvictors)

Class 10 Science Sample Question Paper (Periodic Test) 2020-21

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 examination. 

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

1. Buy Most Likely Question Bank - Science: CBSE Class 10 for 2021 Examination

2. Buy 10 Last Years Solved Papers: CBSE Class 10 for 2021 Examination

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

Here attached the Science Sample Question Paper (2020-2021).

Magnetic Effect of Electric Current - MCQs-2 - CBSE Class 10 Physics (#class10Physics)(#magnetism)(#cbsemcqs)

Magnetic Effect of Electric Current - MCQs-2

CBSE Class 10 Physics

Buy Oswal Science Question Bank (For 2021 Examination) 

Directions: Read the question carefully and choose the right option from the choices given.

Q1: The south pole of a freely suspended magnet points to the:

   (a) Geographical south 

   (b) Geographical north

   (c) Slightly left of geographical north 

   (d) None of these

Q2: For the current-carrying solenoid as shown below, at which point the field strength is maximum? 

   (a) At point A

   (b) At point B

   (c) At point C

   (d) All of these

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)

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.

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 

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.

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 

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).

CBSE Class 10 - Physics - Light (Reflection and Refraction) - Worksheet (#eduvictors)(#cbse)(#class10Physics)

Light (Reflection and Refraction) - Worksheet 

CBSE Class 10 - Physics

Directions: Give one-word answer to the following questions (Q1 - Q10).

Q1:  Which property of light changes when it travels from one medium to another?

Q2: Name the ray of light that falls on a mirror.

Q3: How is focal length, (f) of a mirror related to its radius of curvature (R)?

Q4: What kind of beam of light comes out of a car headlight?

Q5: Which mirror forms an image with the following characteristics.

(a) Virtual (b) Erect (c) Same size as the object (d) Laterally inverted

CBSE Class 10 - Chemistry - Chemical Reactions and Equations (Q & A) Part-2 (#eduvictors)(#cbse)(#class10chemistry)

 Class 10 - Chemistry - Chemical Reactions and Equations (Q & A) Part-2 

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-2 video covers questions and answers about the definition of chemical equation. Understand the difference between unbalanced and balanced chemical equations. Why balancing of chemical equation is necessary? Steps involved in balancing a chemical equation.

Class 10 - Biology - Chapter - How do Organisms Reproduce - Asexual Reproduction (Worksheet - 2)(#class10Biology)(#eduvictors)

Class 10 - Biology - Chapter - How do Organisms Reproduce - Asexual Reproduction (Worksheet - 2)

Fill in the blanks with suitable words:


1. The production of new offspring from a single parent with the involvement of gametes is called ________ reproduction.


2. Reproduction in amoeba takes place asexually called _______   _________.


3. Hydra reproduces asexually, the process is called ________.


4. Leishmania, a unicellular protozoan reproduces very similar to amoeba. But the difference is that the parent cell of Leishmania splits in a _______ plane. 

CBSE Class 10 - Chemistry - Chemical Reactions and Equations (Q & A) Part-1 (#eduvictors)(#class10Chemistry)

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

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-1 video covers questions and answers about chemical changes or reactions. How do chemical changes differ from physical changes? Examples of chemical changes and indicators. What are the characteristics or indicators or chemical changes?

For Study Notes, Worksheets, Question Papers and Assignments for CBSE Class 6 - 12 check our website www.eduvictors.com