Winter Break Assignment (2020-21)

Class-XI SCI AND COMMERCE

ENGLISH

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..........Q1. After the rain, cases of dengue, chikunguniaya, etc. are on the rise in your city. As a Principal, Sunshine Public School, Manu Vihar, you have decided to allow your students to wear full sleeve shirts and trousers in the school for a period of one month. Write the notice in about 50 words.

Q2. In a recent survey, it was found that your city has the highest rate of pollution in the country. Innumerable vehicles on the road and lack of green cover have made the air unfit to breath. Draft a poster in about 50 words, creating awareness about the need to keep your city clean and green.

Q3. Your school has opened a new activity wing for the kindergarten students for which you require play equipment. Write to the Manager, OK Toys, 21, Daryaganj, Delhi, in about 120-150 words placing an order for educational toys and other play equipment. You are NEERA/NARESH Manager, DML Public School, Delhi.

Q4. You are Tarun/Taruna who bought a new Luminous Inverter for your home from R K Electronics, Noida but found m any functional problems as the charging is not done properly and battery water is getting leaked. Write a letter of complaint to the proprietor to take care of the same.

Q5. Lack of job opportunities in the rural areas is forcing people to migrate to cities. Every big city thus, has a number of slums in it .Life in these slums is miserable. Write a letter in 120-150 words to the Editor of a National newspaper on how we can improve the living conditions in these slums. You are KARUN/ KARUNA , M114, Mall Road, Darjeeeling.

PHYSICS

(CHEMISTRY)

CLASS SUBJECT CHAPTER HOME WORK XI

CHEMISTRY

1. Equilibrium

2. Redox reaction

3. Hydrogen

4. S block

5. P block

1.write and learn equilibrium constant, theory of acid and base 2.Write and learn 20 compound oxidation no. And four balancing of equation by half reaction method 3. learn hydrogen as fuel, removing of water hardness 4.learn and write anomalous behaviours of first element in group 5. learn about trends of ionization enthalpy, electro negativity, and atomic radius in each group

(BIOLOGY)

Q1. Compare the C3 and C4 cycle of Photosynthesis. Support your answer with schematic figures. Q2. Explain the ETS in brief and support your answer with schematic representation. Q3. Explain the mechanisms of breathing stating Inspiration and Expiration. Support your answer with schematic diagrams. Q4. Draw a figure showing a section of human heart and explain the cardiac cycle in detail. Q5. Draw well labelled diagram of Nephron. Explain how urine is formed. Explain Counter-current mechanism that helps in concentration of urine.

MATHEMATICS

1.Solve 3 sample papers.

2.Do activity 4,5 and 6 in lab manual.

3.Draw a painting/design/logo in which mathematical figures are used and how mathematics is helpful to create an effective painting.Write your any five ideas.(Make on a drawing sheet)

COMPUTER SCIENCE

1. Write a Python program to create a tuple.

2. Write a Python program to create a tuple with different data types.

3. Write a Python program to create a tuple with numbers and print one item.

4. Write a Python program to unpack a tuple in several variables.

5. Write a Python program to add an item in a tuple.

6. Write a Python program to convert a tuple to a string.

7. Write a Python program to get the 4th element and 4th element from last of a tuple.

8. Write a Python program to find the repeated items of a tuple.

9. Write a Python program to check whether an element exists within a tuple.

10. Write a Python program to convert a list to a tuple.

11. Write a Python program to remove an item from a tuple.

12. Write a Python program to find the index of an item of a tuple.

13. Write a Python program to find the length of a tuple.

14. Write a Python program to convert a tuple to a dictionary.

15. Write a Python program to unzip a list of tuples into individual lists.

16. Write a Python program to reverse a tuple.

17. Write a Python program to convert a list of tuples into a dictionary.

18. Write a Python program to replace last value of tuples in a list. Sample list: [(10, 20, 40), (40, 50, 60), (70, 80, 90)] Expected Output: [(10, 20, 100), (40, 50, 100), (70, 80, 100)]

19. Write a Python program to remove an empty tuple(s) from a list of tuples. Sample data: [(), (), ('',), ('a', 'b'), ('a', 'b', 'c'), ('d')] Expected output: [('',), ('a', 'b'), ('a', 'b', 'c'), 'd']

20. Write a Python program to sort a tuple by its float element. Sample data: [('item1', '12.20'), ('item2', '15.10'), ('item3', '24.5')] Expected Output: [('item3', '24.5'), ('item2', '15.10'), ('item1', '12.20')]

21. Write a Python program to count the elements in a list until an element is a tuple.

22. Write a Python program calculate the product, multiplying all the numbers of a given tuple. Original Tuple: (4, 3, 2, 2, -1, 18) Product - multiplying all the numbers of the said tuple: -864 Original Tuple: (2, 4, 8, 8, 3, 2, 9) Product - multiplying all the numbers of the said tuple: 27648

23. Write a Python program to calculate the average value of the numbers in a given tuple of tuples. Original Tuple: ((10, 10, 10, 12), (30, 45, 56, 45), (81, 80, 39, 32), (1, 2, 3, 4)) Average value of the numbers of the said tuple of tuples: [30.5, 34.25, 27.0, 23.25] Original Tuple: ((1, 1, -5), (30, -15, 56), (81, -60, -39), (-10, 2, 3)) Average value of the numbers of the said tuple of tuples: [25.5, -18.0, 3.75]

शरद कालीन अवकाश के गहृ कार्य 2020

ववषर्- हहिंदी

कक्षा -ग्र्ारहव िं

ननम्नललखित प्रश्नों के उत्तर- 1.ललखिए सरकारी कार्ायलर् में काम जहिल उबाऊ एविं लिंब प्रक्रिर्ा वाले क्र्ों हो जाते हैं? (जामुन का पेड़)

2.जामुन का पेड़ कहान के माध्र्म से सरकारी ववभागों द्वारा कार्ों को एक दसूरे पर िालने की प्रववृत्त को दशायर्ा गर्ा है स्पष्ि कीजजए ।

3.बेब हालदार के व्र्जक्तत्व की क्रकन्ही त न ववशेषताओिं का उल्लेि कीजजए ।

4.अनुच्छेद ललखिए –

र्ोग का महत्व अथवा समाज ननमायण में नारी की भूलमका।

ECONOMICS

ACCOUNTANCY

1) Prepare a bank reconciliation statement in the books of Anutosh from the following information : a) Cash Book showed a credit balance of Rs. 23700 as on 31st Oct. 2020. b) Three cheques of Rs. 2000 each issued on 23rd Oct, out of which one cheque has

yet not been presented for payment c) Aniket, a customer deposited into account Rs. 3400 yet not been debited in the

cash book. d) Bank debited Rs. 4300 towards commission, not recorded in the cash book e) A cheque of Rs. 2600 deposited into bank wrongly credited in the Cash Book f) Bank paid Rs. 3200 towards payment of Bill Payable on behalf of Anutosh not

recorded in the Cash Book g) Bank collected dividend of Rs. 1900 not recorded in the Cash Book h) Pass Book showed a wrong credit of Rs. 1100.

2) Isha sold goods of Rs. 17000 to Manisha on 1.1.2020. Manisha paid Rs. 7000 immediately. On 5th Jan 2020, Isha drew a bill for balance amount on Manisha which was duly accepted and returned by the latter. On 1.2.2020, Isha endorsed the bill in favour of Jeesha, a creditor . On due date of the bill, Manisha could not make payment to Jeesha. Noting charges of Rs. 150 were paid by Jeesha. Ten days later, Manisha paid the amount of bill along with noting charges to Isha. Pass journal entries in the books of Isha, Manisha and Jeesha.

3) On 1st April 2019, following were the balances in the books of Rahul Ltd. : Machinery a/c Rs. 500000

Provision for Depreciation a/c Rs. 180000

On 1st October 2019, a part of machine, costing Rs. 200000 (purchased on 1.7.2015) was sold for Rs. 78900. A new machine was purchased on 1st Jan 2020 for Rs. 70000. Depreciation is charged @10% p.a. on Original Cost every year.

Prepare Machinery a/c and Provision for Depreciation a/c for the year 2019-20.

4) Following errors were committed by the Accountant in the books of accounts of Tatsam. The difference in Trial Balance was transferred to Suspense a/c on 31st March 2020. You are required to pass necessary journal entries to rectify the same as the errors were detected on 6th April 2020 : a) Wages paid Rs. 7500 was wrongly posted to wages a/c as Rs. 5700. b) Purchases book for the month of Jan 2020 was overcast by Rs. 1900. c) Sold goods to Tadbhav Rs. 2670 was wrongly posted on the credit side of his

account as Rs. 6270. d) Repairing of machinery was wrongly debited to Machinery a/c Rs. 3600. e) Depreciation on furniture Rs. 8800 was omitted to be posted to depreciation a/c f) Goods of Rs. 4200 sold to Deshaj was wrongly recorded in Purchases Book.

5) Yuvraj purchased a machine of Rs. 100000 on 1.7.2016. He purchased another machine on 1.10.2016 for Rs. 40000. On 30th September 2018, 3/5th of the machine, purchased on 1st July 2016 was sold for Rs. 28900. A new machine was purchased on 1st Jan 2019 for Rs. 20000. Depreciation is charged @ 10% every year on reducing balance. Prepare Machine a/c for the year 2016-17 to 2019-20.

6) Write the meaning of the following : a) Compensating error ; b) Error of Ommission ; (c ) Suspense a/c ; (d) Bill of

Exchange

BUSINESS STUDIES

1) State any three services rendered by Wholesaler to : a) Retailers (b) Manufacturer

2) State any three services rendered by Retailer to : a) Wholesaler (b) Consumers

3) State the effects of elimination of wholesalers from the chain of distribution. 4) State the arguments in favour of Social responsibilities of a business. 5) Retained earnings play a very important role in the development of a business.

Justify. 6) State the privileges of Preference shares over Equity shares.