CLASS 10 SUMMER ASSIGNMENT 2020

 Biology -
1) Practise and draw diagrams of
(a) The site of photosynthesis
(b) Events occuring during cellular respiration
(c)Internal structure of human heart
(d)Excretory system in human               
 2) Learn and write NCERT question and answer of chapter-
Life Processes in your fair copy


 Chemistry -
(1) Draw periodic table on a chart paper
(2) Write 10-10 reactions of each type of chemical reactions
(a) Combination reactions
(b) Decomposition reactions
 (c) Displacement reactions
(d) Double displacement reactions
(e) oxidation and reduction reactions

Learn  and write NCERT questions of chapter 1 Chemical Reactions and Equations.

History
1. How food and culture go hand in hand explain with examples.
2.  How silk route came in to being and what was it's importance ?
3. How did the cattle plague affect the economy of South Africa ?
4. What is the role of technology during the nineteenth century explain the answer with example.

Civics
5. How much power sharing is important in today's scenario ?
6. Discuss the horizontal and vertical power sharing with diagram.

7. What will be the future planning and effects of "Covid- 19 "on the life of the upcoming youth.paste the pictures regarding it.

English 

Que1. In a chart paper or in an A-4 size drawing

           sheet draw and colour some preventive

          measures that stop the spread of Corona

           Virus.

Hint→ Mask, Sanitizer, Washing hands, social

           distancing, stay safe at home, no spitting etc

Que2. Write an Article on "Changed life style due to

           Corona virus.".  In your article don't forget to

           to mention the terms like

           lockdown, quarantine, hand wash, social

           distancing etc. which were never practised

           before.( 200-250 words )

Que3. " Nature is healing during the lockdown."

           Do some research work on this topic and

           write a paragraph ( 250-300 words) Paste

           pictures and make it more interesting and

           effective.

Que4. Write the poem "A Tiger in the Zoo"

           Draw pictures of tiger is a cage and in the

           wild.

Que5. Write summary of the lesson:  "A letter

           to God " in your own words.

Que6.  Convert the sentence:

            " Children play cricket."

            in all the three tenses and in all the four

            forms. Total 48 sentences.

PHYSICS----

1-  Electricity is an unavoidable source of energy. Suggest ten points for this sentence.

2- Write the given Activity as no. 1 & 2 related with  “Electricity” in Sc. Lab Manual.

3- An electric heater is used round the clock on a 220 V supply and draws a current of 6A. Find the power & cost of using the heater for 30 days the rate of Rs.2.50

4- Two bulbs of 100W each and two coolers of 250W each, work on an average 6 hours a day. If the energy cost Rs. 1.75 per KWH, calculate the monthly bill and the minimum fuse rating when power is supplied at 250V.

5- A resistance of a metal wire has a resistance of 4.25 ohm. What will be the resistance of another wire, made from the same material such that its length increases by four times and area of cross section decreases by three times?

6-  In an experiment to study the relation between the potential difference across a resistor and the current through it, a student recorded the following observations. Plot the given data on a graph sheet and find mean value of resistance.

Potential difference	1	2	3	4	5
Current	0.25	0.65	0.75	1	1.25

MATHEMATICS :

1-  Mention “Euclid Division Lemma” and “Fundamental theorem of Arithmetic”.

2- For any positive integer m, prove that m³ – m is divisible by 6.

3-  Show that one and only one out of n, n+4, n+8, n+12 and n+16 is divisible by 5, where n is any positive integer.

4-  Prove that √2 +√3 is an irrational number.

5-    If two zeros of the polynomial (x⁴ + 2x³ – 29x² – 58x + 60) are (3+√5) and (3-√5), find its other zeros.

6-  Do Maths Activity No. 1,3,5,7 & 9 in Maths Lab Manual with color diagram & using paper cutting work as you have done in class IX.

(NOTE- Be serious with your Lab Manual Work as per CBSE norms Class X Lab Manual records will be sent to the Board .)  

Computer-

1- What internet ? explain different type of   IP.

2- What is the use of  digital technology in our daily  life?

Activity based Assignment-

Make a 3d IPO cycle of computer.(Through thermocol)