HOLIDAY HOME WORK

CHEMISTRY XII

1.18 gram of glucose C₆H₁₂O₆ is dissolved in 1 kg of water in a saucepan .At what temperature will the water boils at 1.013 bar pressure .Kb for water is 0.52 KKg mol-¹ Ans 373.202 k

2. Calculate the boiling point of solution containing 25 gram of urea ( CO(NH₂)₂ and 25 gram thio urea (NH₂ CONH₂) in 500 gram chloroform, CHCl₃ .The boiling point of pure chloroform is 61.2 degree Celsius and KB is equal to 3.63 K/m Ans 66.616°C 3. An aqua solution of glucose boils at 100.01 °C .The model elevation constant for water is 2.5 K Kg /mol. What is the number of glucose molecules in the solution containing 100 gram of water Ans 1.204×10²¹ molecules

4.A solution of glycerol (C₃H₈O₃), molar mass 92 gram per mole, in water was prepared by dissolving some glycerol in 500 gram of water. this solution has boiling point of 100. 42 °C .What mass glycerol was dissolved to make this solution ? Kb for water is 0.5.2 KKg/ mole Ans 37.7 g 5. A solution prepared by dissolving 1.25 gram of oil of winter green ( methyl salicylate) in 99.0 gram of benzene has a boiling point of 80. 31 °C. Determine the molar mass of this compound( boiling point of pure benzene is 8.10 °C)and Kb for benzene is 2.53 °C Kg / mole Ans 152 g/molm SURFACE CHEMISTRY 1. What is addition? Why adsorption take place only at the interface? 2. Differentiate between adsorption and absorption with example. 3.How do the size of the particles of adsorbent and pressure of gas influence the extent of adsorption? ELECTROCHEMISTRY 1.How how many Faradays of electric charge is required to liberate 5600 cm³of oxygen at STP 2. How do metallic and ionic substances differ in conducting electricity

3.Express the relation among conductivity of the solution in the cell, the cell constant and resistance of the solution in the cell 4. What is meant by limiting molar conductivity 5. Why is it not possible to measure the single electrode potential 6.Why does zinc react with dilute sulphuric acid but copper does not 7.write nernst equation for single electrode potential 8. What is a primary cell ? Give an example 9. Write the unit of ionic mobility

10. What will be the EMF of the given cell?Pt|H₂(P₁)|H⊕(aq)|H₂(P₂)|pt CHEMICAL KINETICS 1A REACTION IS SECOND ORDER WITH RESPECT TO REACTANT. HOW IS THE RATE OF REACTION AFFECTED IF THE CONCENTRATION OF THE REACTANT IS (i)DOUBLED(ii) REDUCED TO ONE HALF 2. For a first order reaction show that the time required for 99% completion of a first order reaction is twice the time required for completion of 90% 3.A first order reaction is 50% complete in 30 minutes at 27 °C and in 10 minutes at 47 °C. calculate (I) rate constant for the reaction at 27 °C and 47 °C(ii) energy of activation for the reaction 4.The rate constant for first order reaction is 60%. How much time will it take to reduce the concentration of the reactant to 1/10th of its initial value 5.A first order reaction takes 20 minutes for 25% decomposition. calculate the time when 75% of the reaction will be completed

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D.A.V Public School Bariatu, Ranchi

Holiday Homework XII – Biology Date – 31.05.2020

Answer the following questions:

1. Explain microsporogenesis.

2. Explain mega sporogenesis.

3. Write the structure of a pollen grain.

4. How is Geitonogamy different from Xenogamy?

5. What are chasmogamous and cleistogamous flowers?

6. Explain double fertilization.

7. Define apomixis and polyembryony.

8. Explain Miller’s experiment to show chemical evolution of life with the help of labelled

diagram.

9. Explain incomplete dominance with an example.

10. Work out a typical monohybrid and a dihybrid cross using Punnett’s square.

11. Draw and label the following diagrams

a) T.S. of young anther.

b) Structure of a pollen grain

c) 7 celled or 8 nucleated embryosac (mature embryosac).

d) Structure of an antibody molecule.

Note: Solve all the NCERT exercises of the taught chapters which have already been

discussed. Also, revise the chapters.

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HOLIDAY HOMEWORK

ACCOUNTANCY

NON PROFIT ORGANISATION

1. Difference between the two sides of the receipt and payments accounts reveals:

a. Net profit/loss

b. Surplus/ deficit

c. Cash and bank balance

d. None of these

2. Salaries paid for the current year amount to Rs 8,500 at the end of the year. Outstanding salaries for previous

year amount to Rs 300. Salaries paid in advance last year related to current year amounted to Rs 500. Prepaid

salaries for the next year amounts to Rs 250. Total salaries debited to I & E A/c is ..................

3. Payment of honorarium is a capital expenditure. (true/false)

4. Credit purchase of sports material is Rs 96,000; which is 80 % of total purchase, the cash purchase of sports

material is ..................

5. Specific donation received by NPO are shown on the ................... side of ......................

6. From the following information of an NPO show the sports material items in the Income and Expenditure

Account for the year ending 31st March, 2009 and also in the balance sheet:

31.3.2008 31.3.2009

Stock of sports material 12,200 15,800

Creditors of sports material 18,800 19,200

Advance to suppliers 15,000 6,000

Payment made to suppliers of sports material Rs 2,21,000. Cash purchases Rs 63,000

7. Following is the Receipt and Payment Account of Entertainment Club for the period April 1st, 2016 and

March 31st, 2017.

Receipts Rs. Payments Rs.

Balance c/d

Cash at Bank

Member’s Subscription:

2015-16 12,500

2016-17 1,00,000

2017-18 10,000

Sale of Furniture

(Book Value Rs. 8000)

Sale of Food Stuffs

Sale of Old Periodicals

and Newspaper

Hire of Ground for Marriage

Donations for Sports Fund

Locker Rent

87,500

1,22,500

10,000

1,00,000

3,200

48,750

25,000

17,050

Salaries

Food Stuff for restaurants

Subscription for Periodicals

Printing and Stationery

Sports Expenses

8% Investments (31.3.2017)

Balance c/d:

Cash at Bank

1,50,000

60,000

14,500

13,000

50,000

1,00,000

26,500

4,14,000 4,14,000

Additional information:

a. Advance Subscription on 31st March, 2016 Rs.7,000; subscription in Arrear on 31 March 2017 Rs.13,000

b. Outstanding Locker rent Rs.3050 2015-16

Rs.1500 2016-17

c. Opening Stock of Printing and Stationary Rs.2000 and on Closing Stock of Printing and Stationery is 3000

for the year 2016-17.

d. On 1st April, 2016 other balances were as under:

i. Furniture Rs.1,00,000

ii. Sports Fund Rs.15,000

e. Depreciate Furniture@ 12.5% p.a.

Prepare income and expenditure account for the year ending 31st March, 2017.

8. From the following Receipts and Payment A/c of Dramatic and Sports club, Ambala for the year 31st March,

2018 and additional information, prepare Income & Expenditure A/c and a Balance Sheet as at that date :

Receipts Rs. Payments Rs.

Cash in hand(1-4-17)

Subscription:

2016-17 5,000

2017-18 1,12,000

2018-19 3,000

Prize fund

Charity fund

Sale of waste papers

Endowment fund

Sales of car

(Book value Rs. 80,000)

8,400

1,20,400

20,000

10,000

1,200

45,000

60,000

Salaries

Prizes distributed

Charity Given

Upkeep of Land

Office Expenses

Defense Bonds

Cash in hand(31.3.2018)

60,000

15,000

8,000

5,000

7,500

1,50,000

19,500

2,65,000 2,65,000

Other Information:

i. The club has 1200 member each paying an annual subscription of Rs.100. In 2016-17 20 members had paid

their subscription for 2017-18 as well.

ii. On 31st March, 2018 Salaries Outstanding amounted to Rs. 10,000. Salaries paid in 2017-18 included Rs.

8,000 for the year 2016-17.

iii. On 1.4.2017 the club had Land & Building valued at Rs. 5,00,000 and car valued at Rs. 1,25,000.

PARTNERSHIP FUNDAMNETALS

1. What is partnership? List any two characteristic of partnership.

2. List any two items that may appear on the debit side on a partner’s fixed capital account. (1)

3. State the purpose of allowing interest on capital.

4. Differentiate between drawings against profit and drawings against capital on the basis of any three points.

5. Calculate interest on drawings of Ram @ 10% p.a. for the year ended 31st March,2018 in each of the

following alternative cases:

i. If his drawings during the year were 24,000 (Rs 1,200)

ii. If he withdrew 2,000 p.m. in the beginning of each month. (Rs 1,300)

iii. If he withdrew 2,000 p.m. in the middle of each month. (Rs 1,200)

iv. If he withdrew 6,000 in the end of each quarter. (Rs 900)

v. If he withdrew the following amounts as follows:

July 31 – 6,000 august 31 – 4,000

Sep 15 – 3,000 Dec 1 - 5,000

6. On 31st march, 2014 after the close of the accounts the capital accounts of X and Y stood in the books of

the firm at 4,00,000 and 5,00,000 respectively. On 1st may, 2013 X introduced an additional capital of

1,00,000 and Y withdrew 50,000 from his capital. On 1st October 2013 X withdrew 2,00,000 from his

capital and Y introduced 2,50,000. Profit for the year amounted to 2,00,000 and the partner’s drawings had

been X: 1,00,000 and Y: 50,000. The profit sharing ratio of X and Y was 3:2. Calculate opening capital of

X and Y if the capitals are fluctuating.

7. Astha and Preety are partners in a firm with capital of 20,000 and 30,000 respectively. During the year the

firm earned a profit 12,000. According to the partnership deed the partners were to be provided:

i. Interest on capital 12% p.a.

ii. Salary of 200 p.m. to Astha and a commission of 2% to Preety on sales. (sales for the year

amounted to 90,000)

iii. Interest on drawings of 300 and 400 from partners respectively.

iv. PSR 2:3

Astha withdrew 1,500 and Preety 2,000 during the year. Prepare profit and loss appropriation account and

partners capital account.

8. A, B and C are partners in firm. The firm earned a profit of 45,000 during the year. According to the

partnership deed profit was to be distributed as:

i. First 10,000 in the ratio 3:3:4.

ii. Next 20,000 in the ratio 2:2:1.

iii. Remaining profit equally.

Also, C is been personally guaranteed a profit of 15,000 by A. Prepare profit and loss appropriation

account.

9. John and Jack are partners in the firm. On 1st April, 2019 the following balances appeared in their books:

Capital A/c John Rs 2,50,000 Jack Rs 3,10,000

Current A/c John Rs 10,000 Jack Rs 550 (Dr)

According to partnership deed

a. 10% of net profit to be transferred to General reserve.

b. Interest on capital is to be provided @ 8% p.a.

c. Interest on drawings to be charged @ 6% p.a.

d. Salary of Rs 3,500 p.m. is to be provided to John

e. Jack is to be provided a commission of 10% of net profit after charging all commission.

f. PSR 1:1

On 1st June, 2019 John introduced additional capital of Rs 1,00,000.

Drawings – John Rs 3,000 p.m. at the end of each month; Jack Rs 40,000 on 30th September , 2019.

Profit for the year amounted to Rs 1, 65,000.

You are required to prepare:

i. Profit and loss appropriation A/c

ii. Partner’s capital A/c

iii. Partner’s current A/c

PAST ADJUSTMENTS

1. P, Q and R are partners in a firm. Their capital accounts stood at Rs 30,000, Rs 15,000 and Rs 15,000

respectively on 1st Jan, 2019

As per the provisions of the deed:

i. R was to be allowed a remuneration of Rs 3,000 p.a.

ii. Interest on capital @ 5% p.a.

iii. Profits were to be divided in the ratio of 2:2:1

Ignoring the above terms, net profits of Rs 18,000 for the year ended 2019 was divided among the three

partners equally. Pass necessary journal entry for the above adjustment in the books of the firm.

2. Rohan, Mohan and Sohan are partners with fixed capital of 1,00,000; 2,00,000 and 3,00,000 respectively.

The profit for the year 1,20,000 was distributed in capital contribution ratio without providing

a) Interest on capital @ 10% p.a.

b) Interest on drawing was 3,000; 5,000 and 7,000 respectively for Rohan, Mohan and Sohan.

c) Profit sharing ratio is 3:3:4 and Rohan is guaranteed a profit of 25,000 by Sohan.

Pass necessary adjusting entry

3. Mohan, Vijay and Anil are equal partners. The balances in their capital account being RS 30,000, Rs 25,000

and Rs 20,000 respectively. In arriving at these figures, the profit for the year ended Dec 31st, 2012 Rs 24,000

had already been distributed. Their drawings were Mohan Rs 5,000, Vijay Rs 4,000 and Anil Rs 3,000.

Subsequently it was discovered that :

i. Interest on capital at 10 % p.a. and

ii. Interest on drawings Mohan Rs 250, Vijay 200 and Anil Rs 150 has been omitted.

Pass necessary journal entry for the above adjustment in the books of the firm.

4. Pranay and Parakh are partners in a firm. After the distribution of profit it was discovered that interest on

drawings 1,800 and 2,100 has wrongly been charged from partners. Pass necessary adjusting entry.

5. A, B and C are partners with fixed capital of 40,000; 45,000 and 30,000 respectively. Though it was not

given in the partnership deed, the interest on capital @ 10% p.a. was provided for two years. Their profit

sharing ratios were: year 1- 2:2:1 and year 2- 5:3:2. Pass necessary adjusting journal entry.

B.ST HOLIDAY HOME WORK

1. Complete C.W copy by writing Notes of 1st & 2nd Chapter.

2. Try to solve NCERT questions of both Chapters.

3. Go through all the Principles of Management.

4.Diffrentiate between (a).Efficiency & Effectiveness

(b). Centralisation & Decentralization.

(C). Management & Administration

(d) Authority & Responsibility

(e). Coordination & Cooperation

(f).Principles of Management &Pure science Principles

(g). Principles & Values

(h). Simplification & Standardisation

(i). Cause & Effect relationship.

(j). Unity of command & Direction

DAV PUBLIC SCHOOL, BARIATU,RANCHI

SESSION : 2020-2021

DATE : 30th May, 2020

HOLIDAY HOMEWORK

CLASS : XII

SUBJECT : COMPUTER SCIENCE

TEXTBOOK : COMPUTER SCIENCE WITH PYTHON (CLASS - XII)

TOPIC : PYTHON REVISION TOUR

QUESTIONS TO BE SOLVED :

Q1. MULTIPLE CHOICE QUESTIONS (Page No. 30-31)

Q2. FILL IN THE BLANKS (Page No. 31-32)

Q3. TRUE OR FALSE (Page No. 32)

Q4. SHORT ANSWER QUESTIONS / CONCEPTUAL

QUESTIONS (Page No. 37)

Q5. APPLICATION BASED QUESTIONS (Page No. 38-39)

Q6. PROGRAMMING PRACTICE (Page No. 39-40)

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