Holiday Homework for Class XII SC -...

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Date: 20/05/2020 Ref: AIS/2020-21/0008

Holiday Homework for Class XII SC

Subject : English

From the following choose any two of the errands allotted:

1. Watch any two of the following movies and draw an analytical inception and elaboration upon the two in two

different write ups.

a. Interstellar(2014)

b. The Death of Socrates(2010)

c. Pursuit of Happiness(2006)

d. August Rush(2007)

2. Interview your parent(s)/grand parent(s), by spending good hours with them thereby quote their wise words

that their experiences have revealed. Also write a short biography of the person interviewed in 500 words.

Save better memories through this holiday homework.

Subject: Physics

Project File Format

1. Cover Page :

CBSE PRACTICAL PHYSICS

Name:

Sub Code: 042

Registration No:

Board Roll No:

SCHOOL: AIS

School Code:

Session:

2. Certificate:

3. Declaration:

4. Acknowledgement:


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5. Index:

6. Introduction:

7. Theory (Including Derivation Diagrams):

8. Observation (Required for experimental project):

9. Source of Error (Required for experimental project):

10. Advantages and Disadvantages:

11. Conclusion:

12. Bibliography:

Investigatory Projects

3 types

a) Experimental : Students will perform an experiment and the observation table, graph (if required)

should be present

b) Model based: A working model should be present with the project.

c) Theory based: The working principle, theory, application should be present with the project.

Projects (Class XII)

To find refractive index of different liquid (water, oil) using plane mirror and equiconvex lens(Experimental)

To design an appropriate logic gate combination for a given truth table (Model based)

To Study the working of an AC Generator (Theory Based)

To design an LC oscillator that produces AC from DC source (Model Based)

To convert galvanometer to Ammeter and Voltmeter (Experimental)


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Subject: Physics

Class XII will do their Investigatory project (final project for CBSE) as holiday homework. The projects are divided into

three categories and the projects topics are as follows.

Category 1(Experimental)

a. To find refractive index of different liquid (water, oil) using plane mirror and equiconvex lens.

b. To convert Galvanometer to Voltmeter and Ammeter using high resistor and shunt.

Category 2(Model Based)

a. To design an appropriate logic gate combination for a given truth table

b. To design an LC oscillator that produces AC from DC source.

c.

Category 3(Theoretical)

a. To study the working of an AC generator

Any ONE of the above five projects will be done by student.

Subject : Chemistry

Board level questions

MCQ’s Level I type

MCQ’s Level II type

Board Level questions:

Derive activation energy by Arrhenius equation.

What is the effect of catalyst on rate of a reaction?

Zero order reaction means that the rate of a reaction is independent of concentrations of reactants. 1. Write an example of a zero order reaction. 2. Write the integral rate expression for the zero order reaction.

Write down the unit of rate constant for first order and second order reaction.

What are the differences between order and Molecularity?

For a first order reaction, half life period is 100 sec. How long will it take for the reaction to complete 75%?

For a first order reaction, show that time required for 99% completion is twice the time required for the completion of 90% of reaction.

Derive the integrated rate equation for first order reaction.

Calculate the average rate of reaction between the time interval 30 to 60 sec. (given, log 2 = 0.3010 and log 4 = 0.6021)


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What is activation energy of a reaction?

The rate of a reaction increases in the presence of a catalyst. Explain the statement by plotting a curve between reaction coordinate and energy.

For a reaction, the initial concentrations of a reactant are 0.4M and rate constant is 2.5 x 10-4 s-

1.Calculate the half life period of the reaction.

The decomposition of sulphuryl chloride to SO2 and Cl2 is a first order reaction whose half life is 30 mins. What % of the reactant will be decomposed in 2 hours?

The activation energy of a first order reaction at 300 K is 60 kJ/mol. In the presence of a catalyst, the activation energy gets lowered to 50 kJ/mol at 300 K. How many times the reaction rate changes in the presence of a catalyst at the same temperature?

A first order reaction takes 40 mins for 20% completion. Calculate its half life period.

A first order reaction is 20% complete in 10 mins. Calculate the time taken for the reaction to go to 75% complete.

Define: Half life time and order of a reaction.

The thermal decomposition of a compound is of first order. If 50% of the compound is decomposed in 120 mins, how long will it take for 90% of the compound to decompose?

Give an example of pseudo first order reaction.

Define temperature coefficient of a reaction.

MCQ’s Level I

1. Rate of formation of SO3 in the following reaction: 2SO2 + O2 2SO3 is 100gm/min. Hence, rate of disappearance of O2 is a) 5. Gm/min b) 100 gm/min c) 200 gm/min d) 20gm/min

2. For xA + yB zC; -d[a]/dt = -d[B]/dt = 1.5 d[C]/dt, then x, y and z are a) 1, 1, 1 b) 3, 2, 3 c) 3, 3, 2 d) 2, 2, 3

3. Reaction rates are determined by all of the following factors except 1. The number of collisions between molecules 2. The force of collisions between molecules 3. The orientation of collisions between molecules 4. The spontaneity of the reaction

4. For the above complex, ratio of rate constants of the forward and backward reaction is - 2 x 107 L2mol-2 - 2 x 109 L2mol-2


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- 1 x 10-2 L2mol-2 - 0.5 x 10-9 L2mol-2

5. Which of the following statement is correct? a) The rate of a reaction decreases with passage of time as the concentration of reactants decreases b) The rate of a reaction is same at any time during the reaction c) The rate of a reaction independent of temperature change d) The rate of a reaction decrease with increase in concentration of reactant(s)

6. In the following graphical representation for the reaction A B, there are two types of regions

a) I and II both represent kinetic region at different time interval b) I and II both represent equilibrium region at different time interval c) I represents kinetic while II represents equilibrium region d) I represents equilibrium while II represents kinetic region

7. Which of the following statements in not correct about order of a reaction?

a) The order of a reaction can be fractional number b) Order of a reaction is experimentally determined quantity c) The order of a reaction is always equal to the sum of the stoichiometric coefficients of reactants in the

balanced chemical equation for the reaction d) The order of a reaction is the sum of the powers of molar concentration of the reactants in the rate law

expression

8. For a reaction: 2A + 3B product; A is in excess and on changing the concentration of B from 0.1M to 0.4M, rate becomes doubled. Thus, rate law is a) dx/dt = k[A]2[B]3 b) dx/dt = k[A][B] c) dx/dt = k[A]0[B]2 d) dx/dt = k[B]1/2

9. Rate constant of the Zeroth order can be expressed as a) min-1 atm b) mol/s c) h-1L-1mol d) All of these

10. For Zeroth order reaction a) Activation energy is zero


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b) Heat of reaction is zero c) Rate of disappearance is zero d) Rate of disappearance of reactant is independent of concentration

11. A reaction of first order completed 90% in 90 min, hence it is completed 50% in approximately a) 50 min b) 54 min c) 27 min d) 62 min

12. For the first order reaction Tav, T50 and T75 in the increasing order a) T50< Tav< T75 b) T50< T75< Tav c) Tav< T50< T75 d) Tav = T50< T75

13. Half lives of first order and Zeroth order reactions are same. Ratio of rates at the start of reaction is 1. 0.693 2. 1/0.693 3. 2 x 0.693 4. 2/0.693

14. Half lives of second and third order reactions are equal. Ratio of rates of second and third order reactions at the start of the reaction is a) 2/3 b) 3/2 c) 0.693 d) 3

15. MZA(g) M-8

Z-4B(g) + α-particles. The radioactive disintegration follows first order kinetics. Starting with 1 mol of A in a 1 lit closed flask at 27oC, pressure set up after two half lives is approximately a) 25 atm b) 12 atm c) 37 atm d) 40 atm

16. For a second order reaction, 2A product, a st.line is obtained, if we plot 1) concentration vs. time 2) log(conc) vs. time 3) log(conc) vs. time-1 4) (conc)-1 vs. time

17. Time of 75% reaction is thrice of time of 50% reaction. Hence, order is a) 0


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b) 1 c) 2 d) 3

18. Milk turns sour at 400C, three times as faster as 0oC. hence, Ea in cal of turning of milk sour is a) + 4694 b) -4694 c) 0.001012 d) None of the above

19. The role of catalyst is to change a) Gibbs free energy of reaction b) Enthalpy of reaction c) Activation energy of reaction d) Equilibrium constant

20. In the presence of a catalyst, the heat evolved or absorbed during the reaction a) Increases b) Decreases c) Remains unchanged d) May increase or decrease

MCQ’s Level II

21. The value of rate constant of a pseudo first order reaction a) Depends on the concentration of the reactants present in small amount b) Depends on the concentration of the reactants present in excess amount c) Is independent of the concentration of the reactants d) Depends only on temperature

22. Consider the graph given in figure. Which of the following options does not show instantaneous rate of reaction at 40 sec?


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a) V5 – V2/20 b) V4 – V2/20 c) V3 – V2/10 d) V3 – V1 /20

23. Select the incorrect statement. a) Larger the value of activation energy, smaller the value of rate constant b) Larger the value of activation energy, greater is the effect on the value of k for a given temperature change c) At lower temperature, increase in temperature causes more change in the value of k than at higher

temperature d) k is affected by change in concentration

24. Half life period of the first order reaction is 100 days. After 144.3 days, concentration of the reactant reduced to…….of the original value a) 1/e b) 1/e2 c) 10% d) 20%

25. Number of natural life time (T) required for a first order reaction to achieve 99.9% level of completion is a) 2.3 b) 6.9 c) 9.2 d) 0.105

26. For the second order reaction, 2A Product; the initial concentration of A is 0.1M and rate constant is 2 x 10-3 dm3 mol-1 s-1. The half life period of the reaction is a) 5 sec b) 50 sec c) 500 sec d) 5000 sec

27. The activation energy of a reaction is zero. At 280 K rate constant is 1.6 x 10-6 s-1. The rate constant at 300K is a) Zero b) 3.2 x 10-6 s-1 c) 1.6 x 10-5 s- d) 1.6 x 10-6 s-1

28. Rate constant of a reaction is dependent on temperature k = A.e-Ea/RT. K has the least value at High T and high Ea High T and small Ea Low T and low Ea Low T and high Ea


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29. What function of [x], plotted against time, will give a straight line for a second order reaction? a) [x] b) [x]2 c) log [x] d) 1/[x]

30. Two reactions with different activation energies have the same rate at room temperature. What statement correctly describes the rates of these two reactions at the same higher temperature? a) The reaction with the greater activation energy will be faster b) The reaction with the small activation energy will be faster c) The reactions will have the same rate d) Temperature range is also required

31. The rate constant for the reaction, 2N2O5 4NO2 + O2 is 3 x 10-5 s-1. If the rate is 2.40 x 10-5 Ms-1, then the concentration of the N2O5(in mol/lit) is a) 1.4 b) 1.2 c) 0.04 d) 0.8

32. In a first order reaction, A Product, the ratio of a/(a-x) was found to be 8 after 60 mins. If the concentration is 0.1M then the rate of reaction is a) 2.226 x 10-3 mol L-1 min-1 b) 3.466 x 10-3 mol L-1 min-1 c) 4.455 x 10-3 mol L-1 min-1 d) 5.532 x 10-3 mol L-1 min-1

33. For n-th order reaction, Ct = CO – kt (where Co is initial concentration, Ct is the final concentration after time t). This shows that n is a) 0 b) 1 c) 2 d) 3

34. The rate constant for the reaction in gaseous phase O + O3 2O2 is 8.0 x 10-15 cm3 molecule-1 s-1 at 298 K. Corresponding value in dm3mol-1s-1 is 1. 4.8 x 106 dm3 mol-1 s-1 2. 1.33 x 10-6 dm3 mol-1 s-1 3. 4.8 x 108 dm3 mol-1 s-1 4. 1.33 x 106 dm3 mol-1 s-1

35. Time constant, τ, is required for the concentration of a reactant to fall to 1/e of its initial value, then a) kτ = 2.303 b) kτ = (2.303)-1


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c) kτ = 1 d) kτ = log10e

36. Activation energy of a chemical reaction is determined by a) Determining the rate constant at standard temperature b) Determining the rate constant at two temperatures c) Determining the probability of collision d) Using catalyst

37. Order of a reaction is determined by a) Molecularity b) Pressure c) Temperature d) Mechanism of reaction as well as relative concentration of reactants

38. Which is correct about zero order reaction? C. Rate of reaction depends on decay constant D. Rate of reaction is independent of concentration E. Unit of rate constant is concentration-1 F. Unit of rate constant is concentration-1 time-1

39. By increasing in temperature by 10K, the rate of reaction becomes double. How many times the rate of reaction will be if the temperature is increased from 303 K to 353 k? a) 4 b) 8 c) 16 d) 32

40. Time required for 100% completion of a zero order reaction is 1. ak 2. a/2k 3. a/k 4. 2k/a


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Subject: Information Practices

Instructions: Following questions are to be done in a separate notebook

ANSWER THE FOLLOWING QUESTIONS:


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1. Python panda deals with how many data structures?

2. All Pandas data structures are value mutable (can be changed) and except Series all are size mutable. Series is

size immutable. Yes/no?

3. How many types of sorting is there in pandas?

4. By default, sorting is done on row labels in which order?

5. We can aggregate by passing a function to the entire DataFrame, or select a column via which standard method?

6. What effect the function min() shows?

7. What is the working of the function sum()?

8. What is the working of the function quantile ()?

9. What is a histogram in python Pandas?

10. How many histograms are there in python Pandas?

11. How many functions applications are there in Python Pandas?

12. Give an example of adder ().

13. What do you understand by apply () in Pandas?


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14. What is the difference between applymap() and analogously map()?

15. What is a DataFrame?

16. Write the data type of Name, Age, Gender and Rating.

17. What is an index in Pandas?

18. Give an example to create a series.

19. Write an example to access a data from series with the help of position.

20. What are the datatypes in Numpy?

21. Each built-in data type has a character code that uniquely identifies it in numpy, write any three.

22. What is the role performed by numpy.empty()?

23. What does numpy.zeros() perform?

24. Give an example of numpy.ones().

25. Write any three functions to change shape of an array.

26. What are the ways to join arrays in numpy?

27. What the difference is between append and delete in numpy?

28. What do you understand by numpy.reciprocal()?

29. Give an example using numpy.power().

30. Give an example of numpy.histogram().

31. What is the function of plt()?

32. What is the meaning of the term covariance?

33. What do you understand by correlation?

34. What is linear regression?

35. What is a box plot?

36. What is an scatter plot?

37. Is python a case sensitive language? 38.What are the supported data types in Python?


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Subject: Hindi

1. ‘ दिन जल्दी-जल्दी ढलता है ’कदिता में अपन ों से दमलने की व्याकुलता का िर्णन दकया गया है।

आप भी ऐसी घटना का वर्णन करें जब आप अपनों से ममलने के मलए व्याकुल थे और समय कट

नहीं रही थी।

2.आसमान में रोंग दिरोंगी पतोंग क िेखकर आपके मन में कैसे खयाल आते हैं ?200 शब् ों में दलखखए।

Subject: Biology

GUIDELINES FOR BIOLOGY INVESTIGATORY PROJECT

GENERAL INSTRUCTIONS FOR THE STUDENTS:

STUDENTS SHOULD COMPLETE THE PROJECT WITHIN 20-25 PAGES.

FIRST FOUR PAGES OF THE PROJECT (COVER PAGE, CERTIFICATE, DECLERATION & ACKNOWLEDGEMENT)

SHOULD BE INSERTED IN THE PROJECT IN PRINTED FORM.

THE BODY OF THE PROJECT SHOULD BE HAND WRITTEN ONLY.

PHOTOGRAPHS, DIAGRAMS, CHARTS, TABLES, GRAPHS CAN BE DRAWN AS WELL AS CAN BE PASTED.

PROJECT HAS TO BE SUBMITTED WITHIN CHANNEL FILE.

EACH & EVERY PAGE SHOULD BE CONTAINING MARGIN IN ALL SIDES.NO DECORATION IS NEEDED FOR THIS

KIND OF PROJECT.

ALWAYS USE RIGHT HAND SIDE PAGE FOR WRITING & LEFT ONE CAN BE USED FOR PASTING OR DRAWING THE

DIAGRAMS, GRAPHS, PICTURES, CHARTS, FLOW CHARTS & TABLES ETC.

CASE STUDY INCORPORATION IN THE PROJECT IS MANDATORY FOR EVERY PROJECT TOPIC.

PROJECT TOPICS

Drug Addiction Study on Gene therapy Human Genome project Recombinant DNA technology in today’s medicine Microbes in human welfare DNA fingerprinting


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Mobile radiation & Human health Pollination Acne & its treatment

FORMAT OF THE PROJECT

1. Cover Page :

BIOLOGY INVESTIGATORY PROJECT (AT THE TOP/HEADING)

NAME OF THE PROJECT (MENTION BELOW THE HEADING)

NAME OF THE STUDENT:

SUBJECT CODE: 044

REGISTRATION NUMBER:

BOARD ROLL NUMBER:

SCHOOL: ASIAN INTERNATIONAL SCHOOL

SCHOOL CODE:

SESSION:2020-2021

2. CERTIFICATE OF APPROVAL:

3. DECLARATION:

4. ACKNOWLEDGEMENT:

5. INDEX:

6. BODY OF PROJECT: THIS MUST VARY FROM TOPIC TO TOPIC.

7. CASE STUDY: THIS POINT SHOULD BE WRITTEN WITHIN 3-4 PAGES.TRY TO GIVE REAL DATA/INFORMATION UNDER

THIS POINT.

8. REFERENCES: HERE YOU CAN WRITE THE BOOKS NAMES FROM WHERE YOU HAVE GATHERED INFORMATIONS AS

WELL AS YOU CAN ADD WEBSITES/LINKS ALSO.

ACKNOWLEDGEMENT PAGE, DECLARATION PAGE & CERTIFICATE OF APPROVAL PAGE WRITING PATTERN HAS BEEN

SHARED IN NEXT PAGES.


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Subject: Mathematics

Matrix and Matrix Algebra

NAME OF THE STUDENT

CLASS

SECTION

SUBJECT

REGISTRATAION NO.

ROLL NO( AS IN CBSE BOARD ADMIT CARD)

DATE OF SUBMISSION

PROJECT

SIGANATURE OF STUDENT SIGNATURE OF TEACHER


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SL.NO TOPIC PAGENO. CERTIFICATE

ACKNOWLEDGEMENT

1 INTRODUCTION

2 HISTORICAL DEVLPMENT

3 DEFINITION OF MATRIX

4 GENERAL FORM OF MATRIX

5 VARIOUS TYPES OF MATRICES

6 ROW MATRIX

7 COLUMN MATRIX

8 SQUARE MATRIX

9 RECTANGULAR MATRIX

10 DIAGONAL MATRIX

11 SCALAR MATRIX

12 ZERO MATRIX

13 IDENTITY MATRIX

14 UPPER TRIANGULAR MATRIX

15 LOWER TRIANGULAR MATRIX

16 SYMMETRIC MATRIX

17 SKEW SYMMETRIC MATRIX

18 SUB MATRIX

19 MATRIX ALGEBRA

20 ADDITION AND SUBTRACTION

21 SCALER MULTIPLICATION

22 TRANSPOSE OF A MATRIX AND ITS PROPERTIES

23 MATRIX MULTIPLICATION AND ITS PROPERTIES

24 INVERSE OF A MATRIX AND ITS PROPERTIES

25 USES AND APPLICATIONS

26 CONCLUSION

27 A FEW MATHEMETICIANS RELATED TO THE TOPIC

28 BIBLIOGRAPHY

GENERAL GUIDELINES:

The students prepare 1 project file.

The project is to be done on inter-leaf sheets.

The total length of the project will be 25-30 pages.

INDEX


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The project should be presented in a neat file

Students have to preserve the initial drafts of the project as well as any

research papers that they may have used.

Please avoid using colored sheets except for the title pages.

The projects must be neat and well presented and must be completely

hand- written.

No whiteners to be used or written matter to be crossed out. In case of any

mistakes, redo the sheet.

Do not number sheets or write dates unless so instructed by your teacher.

Color graphs and pie charts (if it is relevant for any aspect of your project)

to make them look attractive.

The project must contain lot of pictures related to the topic.

The project must contain survey sheets/questionnaires.

PRESENTATION OF PROJECT

1. TITLE PAGE THAT SHOULD STATE:

MATHEMATICS PROJECT:(TITLE OF PROJECT)

NAME:

SCHOOL:

YEAR:

ROLL NO:

2. CERTIFICATE OF AUTHENTICITY ( TO BE PASTED)

3. INDEX

4. ACKNOWLEDGEMENT (Acknowledging the institution,

CBSE, Head of the institution and the subject teacher, the

places visited and the persons who have helped).

5. PREFACE:

Name Of Project: Objective Of Project:

6. INTRODUCTION:

Objective of doing the project.

Introduce the topic studied giving some historical

background if possible.


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Subject: Computer Science

1. Write a program to find the greatest of three numbers.

2. Write a program to find the grade and print the result using nested if statement.

3. Write a program to find the factorial of a number using user defined function.

4. Write a program to generate the Fibonacci series up to a given range.

5. Write a program o input any values for two tuples. Print it, interchange it and then compare them.

6. Write a program to capitalize first and last letters of each word of a given string.

7. Write a program to remove the duplicate characters of a given string.

8. Write a program to multiply all the items in a list.

9. Write a program to convert a string to a list.

10. Write a python function that checks whether a passed string is a palindrome or not.

11. Write a python function that takes a number as parameter and checks whether the number is prime or not.

12. Write python program to print the following patterns:

a) #

# #

# # #

# # # #

b) @ @ @ @ @

@ @ @ @

@ @ @

@ @

@

c) &

& &

& &

& &

13. What do you mean by recursion? How recursion is different from iteration?

14. Is return statement is optional? Compare and comment on the following two return statements:

return

return val

15. What is the utility of the built in function help( )?

16. State one advantage and one disadvantage of recursion over iteration.

17. What are formal arguments and actual arguments?

18. What is difference between local and global variables?

19. Explain different types of functions in Python using appropriate examples.

20. “A program having multiple functions is considered better designed than a program without any function” –

justify the statement.


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Subject: Mathematics

TOPIC-DIFFERENTIATION


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TOPIC-DETERMINANT


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