std : xii (science) holiday homework science... · gdgis(std xii holiday homework) page 5 (h)...

GDGIS(STD XII HOLIDAY HOMEWORK)

STD : XII (SCIENCE)

HOLIDAY HOMEWORK G D GOENKA INTERNATIONAL SCHOOL

SURAT


Dear Parents,

Holidays are time when you can connect with your child in many ways. As you are your child’s first and most

important teacher, you can encourage your child’s love of learning by participating in educational activities at

home. Working together on the activities will help your child build confidence, learn to reason and develop

skills necessary for his/her education.

• Spend quality time with your children.

• Take your child for a morning walk, talk about things you can see around.

• Make your child read a paragraph of English newspaper or English story book daily. Explain them the

meaning. Note down difficult words in a diary and write their meaning respectively. This will help your child

build good vocabulary.

• Let your child help around the house doing small jobs like dusting, cleaning the table, filling water bottles,

watering the plants etc.

• Take your child out for a movie and have fun together.

• Converse with your child in English.

• Please make sure that your child completes his/her holiday homework.

Dear Children,

• Revise all the work that is done till now of each & every subject in school.

• Improve your handwriting by writing one page of English(cursive) and Hindi on regular basis.

• Please follow the guidelines given with each subject.

• Please take care of the neatness of the work.

• Do not get the Holidays’ Homework done by an expert. It must be the effort of the child. Parents must act as

guides and facilitators but not substitutes to do the work.

• The Homework must be done systematically. Holidays’ Home work should be seen as an interesting activity

that helps in mental development of the child.


ENGLISH

Guide lines:-

1. Question numbers 1,2,3 and 5 will be done in the writing skill notebook.

2. Question number 4 will be done on A3 size paper. ( coloured or white)

3. The A3 sheet must have a quarter inch border.

4. Presentation should be creative.

5. Home work should be submitted on 9th June.

1. Note making for chapter 1, 2 of ‘The Invisible Man’

2. Draw the mind maps for chapter 3,4,5 of the novel

3. Write an article on the following topic in 150-200 words (any one)

A) Language is the key to one’s prison (ref.: The Last Lesson)

B) Exploitation of childhood (ref.: Lost Spring)

4. Prepare a poster on a3 size paper for the topic ‘Drug Abuse & Illicit Trafficking

5. Write a detailed summary of the poem ‘The Elementary School Classroom in a Slum

CHEMISTRY

GUIDELINES :

1. A4 size sheets to be used for the project.

2. Home work should be submitted on 13th June. 3. Content should be strictly in handwritten.

4. The sequence of project should be as follows:

Page1: Cover page (Specimen copy given in soft)

Page2: Certificate (Specimen copy given in soft)

Page3: Acknowledgement (Specimen copy given in soft)

Page4: Index page should contain the following information:

(a) Aim of the project

(b) Introduction

(c) Theory

(d) Conclusion

(e) Bibliography

Page5 onwards: Content

Students have to prepare investigatory projects on the topic given to them. Roll No. wise topic is

mentioned below.

Roll No.

Name Topic

1. Dhruv Parekh To compare foaming capacity of different soaps

2. Harsh Mehta To do a comparative study of the effectiveness of different


commercially available antacids.

3. Ishika Jain To dye cotton and woollen clothes with malachite green.

4. Jainam Shah To study the effects of impurities on the freezing and boiling points.

5. JainamSheth

Study of effect of potassium Bisulphate as food preservative under various conditions

6. KushalGadhiya To analyse different tooth paste for the analysis of ions

7. NiralVerma Estimation of Vitamin C in fruits and vegetables

8. Raj Sonar To compare the rates of evaporation of different liquids.

9. Vaishnavi Tank

Study of common food adulterants in fat , oil , butter, sugar, turmeric powder,chilli powder and pepper

10. Anisha Wadhwa To compare foaming capacity of different soaps

11. AnuragChoudhary

To do a comparative study of the effectiveness of different commercially available antacids.

12. Bhavya Desai To dye cotton and woollen clothes with malachite green.

13. ChandanChhaparia To study the effects of impurities on the freezing and boiling points.

14. Harsh Patel

Study of effect of potassium Bisulphate as food preservative under various conditions

15. Jay Khatri To analyse different tooth paste for the analysis of ions

16. Kartik Agarwal Estimation of Vitamin C in fruits and vegetables

17. MuskanBansal To compare the rates of evaporation of different liquids.

18. Naikaj Patel

Study of common food adulterants in fat , oil , butter, sugar, turmeric powder,chilli powder and pepper

19. NirmitDaliya To compare foaming capacity of different soaps

20. Prince Dabaria To do a comparative study of the effectiveness of different commercially available antacids.

21. Siddhi Mehrotra To dye cotton and woollen clothes with malachite green.

22. Vaishnavi Amin To study the effects of impurities on the freezing and boiling points.

PHYSICS

GUIDELINES :








(f) Aim of the project

(g) Introduction


(h) Theory

(i) Conclusion

(j) Bibliography


Students have to prepare investigatory projects on the topic given to them. Roll No. wise topic is

mentioned below:

Roll No.

Name Topic

1. Dhruv Parekh

To study various factors on which the internal resistance/EMF of a cell depends.

2.

Harsh Mehta

To study the variations in current flowing in a circuit containing an LDR because of a variation in (a) the power of the incandescent lamp, used to 'illuminate' the LDR (keeping all the lamps at a fixed distance). (b) the distance of a incandescent lamp (of fixed power) used to 'illuminate' the LDR.

3. Ishika Jain

To find the refractive indices of (a) water (b) oil (transparent) using a plane mirror, an equi convex lens (made from a glass of known refractive index) and an adjustable object needle.

4. Jainam Shah

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

5. JainamSheth

To investigate the relation between the ratio of (i) output and input voltage and (ii) number of turns in the secondary coil and primary coil of a self designed transformer.

6. KushalGadhiya

To investigate the dependence of the angle of deviation on the angle of incidence using a hollow prism filled one by one, with different transparent fluids.

7. NiralVerma

To estimate the charge induced on each one of the two identical styrofoam (or pith) balls suspended in a vertical plane by making use of Coulomb's law.

8. Raj Sonar

To set up a common base transistor circuit and to study its input and output characteristic and to calculate its current gain.

9.

Vaishnavi Tank

To study the factor on which the self inductance of a coil depends by observing the effect of this coil, when put in series with a resistor/(bulb) in a circuit fed up by an A.C. source of adjustable frequency.

10. Anisha Wadhwa

To construct a switch using a transistor and to draw the graph between the input and output voltage and mark the cut-off, saturation and active regions.

11. AnuragChoudhary

To study the earth's magnetic field using a tangent galvanometer.

12. Bhavya Desai

To study various factors on which the internal resistance/EMF of a cell depends.

13. ChandanChhaparia To study the variations in current flowing in a circuit containing


an LDR because of a variation in (a) the power of the incandescent lamp, used to 'illuminate' the LDR (keeping all the lamps at a fixed distance). (b) the distance of a incandescent lamp (of fixed power) used to 'illuminate' the LDR.

14. Harsh Patel

To find the refractive indices of (a) water (b) oil (transparent) using a plane mirror, an equi convex lens (made from a glass of known refractive index) and an adjustable object needle.

15. Jay Khatri

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

16. Kartik Agarwal

To investigate the relation between the ratio of (i) output and input voltage and (ii) number of turns in the secondary coil and primary coil of a self designed transformer.

17. MuskanBansal

To investigate the dependence of the angle of deviation on the angle of incidence using a hollow prism filled one by one, with different transparent fluids.

18. Naikaj Patel

To estimate the charge induced on each one of the two identical styrofoam (or pith) balls suspended in a vertical plane by making use of Coulomb's law.

19. NirmitDaliya To set up a common base transistor circuit and to study its input and output characteristic and to calculate its current gain.

20. Prince Dabaria To study the factor on which the self inductance of a coil depends by observing the effect of this coil, when put in series with a resistor/(bulb) in a circuit fed up by an A.C. source of adjustable frequency.

21. Siddhi Mehrotra To construct a switch using a transistor and to draw the graph between the input and output voltage and mark the cut-off, saturation and active regions.

22. Vaishnavi Amin To study the earth's magnatic field using a tangent galvanometer.

BIOLOGY

GUIDELINES :








(k) Aim of the project

(l) Introduction


(m) Theory

(n) Conclusion

(o) Bibliography


Students have to prepare projects on the topic given to them. Name wise topic is mentioned

below:

Roll No. Name Topic

1. Siddhi Cancer and its types

2. KartikAgrawal AIDS

3. Jay khatri Malaria

4. MuskaanBansal Invitro fertilization and its types

5. Naikajpatel Sewage Treatment Plant

6. Vaishanavi Amen Biogas: An alternative source of energy

7. Anesha Biotechnology and its applications

PHYSICAL EDUCATION

GUIDELINES:

1. Write about the following in your practical file.

2. Home work should be submitted on 9th June

1. Modified aahper test for all the items

2. Coduct barrow 3 item test on 10 students

3. Procedure for administering senior citizen fitness test 5 elderly family members

4. Procedure for asanas, benefits and contraindication for any two asanas each lifestyle disease.

5. Any one game of your choice out of the list given below. Labelled diagram of field and equipment

rules, terminologies and skills.

A. Basketball

B. Football

C. Volleyball

COMPUTER SCIENCE

GUIDELINES:

1. Write the answers in A4 size paper.

2. Presentation should be neat and tidy.

3. Home work should be submitted on 9th Jun


1) i) Write the names of the header files which are not necessary to execute the following

C++ code:

#include<iostream.h>

#include<stdio.h>

#include<string.h>

#include<ctype.h>

#include<math.h>

void main()

{ char c, String[ ] = " System Design ";

for(int i=0; String[i]!='\0' ;i++)

if(isdigit(String[i])

cout<<endl;

else

{

c=toupper(String[i]);

cout<<c;

}

}

ii) void main()

{ int a=5; char ch = ‘g’;

ch = toupper(ch);

cout<<setw(5)<<<sqrt(a)<<endl;

iii) void main()

{ char Msg[ ]="Sunset Gardens";

clrscr();

for (int I=5; I <strlen(Msg);I++)

{

puts(Msg); exit(0);

}

2) When a function is overloaded, there are multiple definitions of the functions. What makes the

various definitions of the function different from each other?


3)

i) Give the output of the following program (Assuming that all required header files are

included in the program)

void main()

{ char a[]= “Exam-2011 AheAd”;

int i; for(i=0; a[i]!= ‘\0’;i++)

{

if(a[i]>= 97 && a[i]<=122)

a[i] --;

else if(a[i]>= ‘0’ && a[i]<= ‘9’)

a[i] = a[i -1];

else if(a[i]>= ‘A’ && a[i]<= ‘Z’)

a[i]+ = 32; else a[i]= ‘#’;

} puts(a);

}

ii) Find the output of the following program segment:

int a = 5;

void demo(int x, int y, int &z)

{ a += x+y;

z = a+y;

y += x;

cout<<x<<'*'<<y<<'*'<<z<<endl;

}

void main()

{ int a = 3, b = 4;

demo(::a,a,b);

demo(::a,a,b);

}

4) Differentiate between a Run Time Error and Syntax Error. Also give suitable examples of each.

5) Write a program in C++ to take input of marks of 5 students in 4 subjects. Calculate the average

marks of each student and display them.

6) Differentiate between public and private visibility modes in context of Object Oriented

Programming using a suitable example illustrating each.

7) Write a function to count the numbers of times ‘A’ or ‘E’ appears in a string.

8) Write a function to print the sum of even numbers in a 1-d array of 10 elements. The function

should accept the array as the argument.

9) i) What do you mean by scope of a variable? How is local scope different from global

scope?


ii) Write any two functions available in each stdio.h and conio.h.

iii) Write any two differences between structure and class

iv) How is call by value different from call by reference?

v) How is actual parameter different from formal parameter? Give example.

vi) What do you mean by function overloading? Give example.

10) Rewrite the C++ program after removing all the syntax errors. Underlining each correction:

#include<iostream.h>

#define PI=3.14;

void main()

{

float rad, area;

cout<<’Enter Radius”<<endl;

cin<<rad;

area=PI*pow(rad,2);

cout<>”Area=”<<area;

}

11) Write a C++ program to implement linear search in an array.

INFORMATIVE PRACTICES

GUIDELINES:

1. Take printout of these IDE design question, paste in lab manual.

2. Write programs in Lab manual.

3. Home work should be submitted on 9th Jun

1) Differentiate between:

a. DROP TABLE & DROP DATADABASE

b. DROP TABLE & DROP clause of ALTER TABLE.

2) Explain the following functions with syntax, purpose and example.

a. CONCAT() , SUBSTR(),TRIM(), INSTR()

b. MID(),MOD() POW(), ROUND()

c. CURDATE(), NOW(), SYSDATE(), DAYNAME()

3) Take printout of these two tables and queries, paste in lab manual. Write answers of given

queries.

DATABASE NAME : HOSPITAL

TABLE-1 : DOCTOR

ID NAME DEPT GENDER EXPERIENCE

101 John ENT M 12

104 Smith ORTHOPEDIC M 5


107 George CARDIOLOGY M 10

114 Lara SKIN F 3

109 K George MEDICINE F 9

105 Johnson ORTHOPEDIC M 10

117 Lucy ENT F 3

111 Bill MEDICINE F 12

130 Morphy ORTHOPEDIC M 15

TABLE -2: SALARY

ID BASIC ALLOWANCE CONSULTATION

101 12000 1000 300

104 23000 2300 500

107 32000 4000 500

114 12000 5200 100

109 42000 1700 200

105 18900 1690 300

130 21700 2600 300

i) Display NAME of all doctors who are in “MEDICINE” having more than 10 years’ experience

from the table DOCTOR.

ii) Display gender wise total counting.

iii) Display the average salary of all doctors working in “ENT” department using the tables

DOCTOR and SALARY. Salary = BASIC + ALLOWANCE

iv) Display the minimum ALLOWANCE of female doctors.

v) Display the highest consultation fee among all male doctors.

vi) Select Dept,count(*) from doctor;

vii) Select Name, Basic, allowance from doctor, salary where doctor.id = salary.id;

viii) To display records of all the doctors in ascending order of experience.

ix) SELECT count( * ) from DOCTOR where SEX = “F”

x) SELECT NAME, DEPT, BASIC from DOCTOR, SALARY where DEPT = “ENT” and DOCTOR.ID

= SALARY.ID

MATHEMATICS

1. Prove that: cos−1 𝑥 + cos−1 {𝑥

2+

√3−3𝑥2

2}=

𝜋

3

2. Prove the following: cos[tan−1{sin(cot−1 𝑥)}] = √

1+𝑥2

2+𝑥2


3. If the binary operation ∗ on the set Q, is defined by 𝑎 ∗ 𝑏 = 2𝑎 + 𝑏 − 𝑎𝑏, then

find the value of 3 ∗ 4.

4. If f(x) = 8𝑥3 and g(x) = 𝑥

1

3, x∈ 𝑅, find fog(x).

5. If x, y, z [-1,1] such that sin−1 𝑥 + sin−1 𝑦 + sin−1 𝑧 =3𝜋

2, 𝑓𝑖𝑛𝑑 𝑡ℎ𝑒 𝑣𝑎𝑙𝑢𝑒 𝑜𝑓

𝑥2006 + 𝑦2007 + 𝑧2008 −9

𝑥2006+ 𝑦2007 + 𝑧2008

6. Let A = R-{3} and B = R-{2/3}. If 𝑓: 𝐴 → 𝐵, where 𝑓(𝑥) =2𝑥−4

3𝑥−9, then prove that f is a bijective function.

7. Consider the binary operations ∗: 𝑅 𝑋 𝑅 → 𝑅 𝑎𝑛𝑑 𝜗: 𝑅 𝑋 𝑅 → 𝑅 defined as 𝑎 ∗ 𝑏=|𝑎 − 𝑏| and

as 𝑎𝜗𝑏 = 𝑎 𝑓𝑜𝑟 𝑎𝑙𝑙 𝑎, 𝑏 ∈ 𝑅. Show that ‘∗ ′ is commutative but not associative, ‘𝜗′ is associative

but not commutative.

8. If the function 𝑓: [1, ∞) → [1, ∞) defined by f(x)= 2𝑥(𝑥−1) is invertible, find 𝑓−1(𝑥).

9. Find x, if(tan−1 𝑥)2 + (cot−1 𝑥)2 =5𝜋2

8

10. Consider f: {1, 2, 3} → {a, b, c} and g: {a, b, c} → {apple, ball, cat} defined as f (1) = a, f (2) = b, f (3) = c, g

(a) = apple, g (b) = ball and g (c) = cat. Find out f –1, g–1 and (g o f))–1?

11. If

50

41

2 wyx

zyx, find the value of x + y .

12. If R = {(x , y) : x + 2 y = 8 } is a relation on N , write the range of R. For what value of k, the matrix

15

32 kis not invertible?

13. If

4tantan 11

yx , x y < 1 , then write the value of x + y + x y .

14. If A is a square matrix such that A2 = A , then write the value of 7 A – ( I + A )3 , Where I is an identity matrix .

15. Show that the function f: R R, defined by 𝑓(𝑥) = 2𝑥3 − 7 , for x R is bijective.

16. If the function RRf : , 22 xxf and RRg : be given by 1,

1

x

x

xxg , find f o g and

g of and hence find fog (2) and g of ( - 3 ).

17.

For the matrix

312

321

111

A Show that A3- 6A2 +5A +11 I = 0. Hence, find A-1.


18. Show that if

5

3

5

7: RRf is defined by

75

43

x

xxf and

5

7

5

3: RRg is

defined by 35

47

x

xxg , then f o g = I A and g o f = I B , where

5

3 RA and

5

7 RB ; I A ( X ) = x

x BxxxIBAx , are called identity functions on set A and B respectively .

19.

Obtain the inverse of the following matrix by using elementary operations

052

503

231

.

20. Two schools A and B wants to award their selected students on values of sincerity, truthfulness and

helpfulness. The school A wants to award ` x each, ` y each and ` z each for the three respective values to

3,2 and 1 students respectively with a total award money of ` 16,000 . School B wants to spend ` 23,000 to

award its 4, 1 and 3 students on the respective values (by giving the same award money to the three values

as before). If the total amount of award for one prize on each value is ` 9,000, using matrices, find the award

money for each value .Apart from these three values, suggest one more value which should be considered

for award. (VBQ)

21. 1. Find the value of tan−1 1 + tan−1 2 + tan−1 3.

22. 2. Given that 𝑓(𝑥) = sin 𝑥 check if function 𝑓 is one-one for (i) (0, 𝜋) (ii) (−𝜋

2,

𝜋

2).

23. 3. If sin−1 𝑥 + sin−1 𝑦 =2𝜋

3, then find the value of cos−1 𝑥 + cos−1 𝑦.

24. 4. Let be a binary operation on the set N, of rational numbers, defined by 𝑎 ∗ 𝑏 = 𝑎 + 𝑏 + 10, 𝑓𝑜𝑟 𝑎, 𝑏 ∈

𝑁. Then find the identity element for ∗, if exists.

25. 5. Let A = [

1 −2 1−2 3 11 1 5

], verify that [adj A]-1= adj (A-1).

std : xii (science) holiday homework science... · gdgis(std xii holiday homework) page 5 (h)...

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