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

Saturday, 9 October 2021

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

Saturday, 1 May 2021

CBSE Class 10 Physics - Electricity (1 Mark Based Questions and Answers) Part-1 (#class10Science)(#class10Physics)(#eduvictors)(#cbse2021)

CBSE Class 10 Physics - Electricity (1 Mark Based Questions and Answers) Part-1

CBSE Class 10 Physics - Electricity (1 Mark Based Questions and Answers) Part-1 (#class10Science)(#class10Physics)(#eduvictors)(#cbse2021)


Q1: By what other name is the unit joule/coulomb called ?

Answer: Volt


Q2: Which of the following statements correctly defines a volt ? 

(a) a volt is a joule per ampere.

(b) a volt is a joule per coulomb.


Answer: (b) a volt is a joule per coulomb.


Q3: (a) What do the letters p.d. stand for ?

    (b) Which device is used to measure p.d. ? 


Answer:

(a) p.d. stands for potential difference.

(b) Voltmeter is used to measure p.d.

Thursday, 29 April 2021

CBSE Class 10 Biology - Questions and Answers Related to Activity To Show Chlorophyll is Necessary For Photosynthesis (#class10Biology)(#class10Science)(#eduvictors)

CBSE Class 10 Biology - Questions and Answers Related to Activity To Show Chlorophyll is Necessary For Photosynthesis

Chapter: Life Processes (NCERT Book Activity 6.1)

CBSE Class 10 Biology - Questions and Answers Related to Activity To Show Chlorophyll is Necessary For Photosynthesis (#class10Biology)(#class10Science)(#eduvictors)


Activity Steps

Step 1: Take a potted plant with variegated leaves – for example, a money plant or croton.

Step 2: Keep the plant in a dark room for three days so that all the starch gets used up.

Step 3: Now keep the plant in sunlight for about six hours.

Step 4: Pluck a leaf from the plant. Mark the green areas in it and trace them on a sheet of paper.

Step 5:  Dip the leaf in boiling water for a few minutes.

Step 6:  After this, immerse it in a beaker containing alcohol.

Step 7: Carefully place the above beaker in a water bath and heat till the alcohol begins to boil.

What happens to the colour of the leaf? What is the colour of the solution?

Step 8: Now dip the leaf in a dilute solution of iodine for a few minutes.

Take out the leaf and rinse off the iodine solution.

Observe the colour of the leaf and compare this with the tracing of the leaf done in the beginning.

What can you conclude about the presence of starch in various areas of the leaf?

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.


Wednesday, 24 March 2021

Class 10 Science Preboard Sample Question Paper (Set-4) 2020-21(#cbsepapers)(#class10Science)(#eduvictors)

Class 10 Science Preboard Sample Question Paper  (Set-4) 2020-21

Class 10 Science Preboard Sample Question Paper  (Set-4) 2020-21(#cbsepapers)(#class10Science)(#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 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



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

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.

Thursday, 25 February 2021

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

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



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

Wednesday, 24 February 2021

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

Class 10 Science Preboard Sample Question Paper  2020-21

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



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

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, 8 January 2021

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

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

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


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.

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. 

Tuesday, 8 December 2020

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 

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


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 ∞).

Wednesday, 11 November 2020

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

Class 10 Science CBSE Sample Question Paper with Marking Scheme 2020-21(#cbse2020)(#class10Science)(#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 Science Sample Question Paper (2020-2021) along with Marking Scheme (published by CBSE). 

Saturday, 24 October 2020

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

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

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



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

Saturday, 10 October 2020

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

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

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? 

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


   (a) At point A
   (b) At point B
   (c) At point C
   (d) All of these