Class-XII

Subject- Chemistry

1) Make an investigatory project for A.I.S.S.C.E 2020 chemistry practical

2) Solve 50 numerical from lesson - Solution, Electrochemistry and

Chemical Kinetics

3) Complete the practical notebook up to the practical performed so far.

4) Learn lesson "Solution", "Electrochemistry", "Chemical kinetics","Surface

Chemistry".

5) Complete classwork up to Surface Chemistry.

6) Complete homework copy L1 to L4 all exercise.

XII-A Mrs. Anita Bhamri

XII-B Mr. U.P Singh

XII-C Mrs. Kirti Tandon

COMPUTER SCIENCE

Note: - Instructions for students

1. Students of class XII are instructed to do all the 15questions in practical file. 2. Complete progress in computer science with python up to chapter functions.

1.Write a menu driven program in python with following options: -

• Calculate Factorial of number N

• Display Fibonacci series (0 to N)

• Check whether the number is Armstrong or not

• Check whether the number is palindrome or not

• Display Table of number N

• Exit

2.Write a menu driven program in python with following options: -

• Check whether the string is palindrome or not

• Calculate total characters in string

• Calculate total vowels in string

• Calculate total spaces in string

• Display sting in reverse order

• Exit

3.Write a program to calculate income tax of an employee on the basis of basic salary

and total savings inputted by the user as per the given slabs: -

*No tax for individual with income less than Rs.2.5 lakhs

*0% to 5% tax with income Rs.2.5 lakhs to Rs.5 lakhs

*20% tax with income Rs.5 lakhs to Rs.10 lakhs

*Investments up to Rs.1.5 lakhs under Sec 80 C can save up to Rs.45000 in

taxes.

4. Write a program to store students’ information like admission number, roll number,

name and marks in a dictionary and display information on the basis of admission

number.

5. Write a program to count the frequency of an element in a given list.

6. A list Num contains the following elements:

3,25,13,6,35,8,14,45

Write a function to swap the content with the next value if divisible by 5 so that the

resultant list will look like.

25,3,13,35,6,8,45,14

7. Write a Program to shift elements of a list so that the first element moves to the

second index and second index moves to third index, and so on, and the last element

shifts to the first position.

8. Write a python program using function that accept two string as parameter and

return combined string.

9. Write a python program to input ‘n’ classes and names of their class teachers to

store them in a dictionary and display the same. Also accept a particular class from the

user and display the name of the class teacher of the class.

10. Write a program that repeatedly asks from users some numbers until string ‘done’

is typed. The program should print the sum of all numbers entered.

11. Write a program that reads a date as an integer in the format MMDDYYYY. The

program will call a function that print out the date in the format <Month Name >

<day>, <year>. For ex: Enter date:12252019 print December 25,2019

12. Write a function that takes a string with multiple words as parameter and then

capitalizes the first and last letter of each word and forms a new string out of it.

13. Write a Python function to calculate the factorial of a number (a non-negative

integer). The function accepts the number as an argument.

14. Write a Python function that takes a number as a parameter and check the number

is prime or not.

15. Write a Python program that accepts a hyphen-separated sequence of words as

input and prints the words in a hyphen-separated sequence after sorting them

alphabetically.

CLASS 12

MATHS

• Let and R be a relation defined on A as .

Write the ordered pair to be added to R to make it smallest equivalence relation .

• Consider and the relation R on A as . Check whether

R is reflexive,symmetric,transitive.

• Let defined by . Find and hence find

• Determine whether the function defined as inverse exists. Give reasons.

• Let given by Find .

• Let defined by . Find .

• Let defined by . Find .

• Let defined by for all .

• Let defined by . Find the function .

s.t .

• Let defined by . Find .

• Check whether the relation R is R defined by is reflexive , symmetric ,or transitive.

• Show that the relation R in the given by is an equivalence

relation . Also show that all the elements {1,3,5} are related to {2,4}.

• Let nN be the set of Nataural No.s & & R be a relation or A defined by (a,b) R(c,d) if

for all . Show that R is eqvalence relation .

• Determine whether the relation R defined on R as is reflexive, symmetric or transitive.

• Show that given by is invertible. Also find .

• Let given by is a bijection.

• Show that defined by

• Consider given by Prove that is invertible with

Chapter-2

INVERSE TRIGONOMETRIC FUNCTIONS

• Find the value of the following

(i) (ii) (iii)

(iv) (v)

• Solve for

• Prove the following : (i)

(ii) (iii) 2

(iv) 2 (v)

• Evaluate

• Solve the following :

(i) (ii)

(iii) . (iv)

• If , prove that

• If

• Prove that

• If

• Let

Find the value of .

• Prove that .

• Show that

Chapter-3

MATRICES

• Construct a matrix whose elements are given by .

• Write the no. of all possible matrices of with each elements 1,2 or 3.

• If the matrix and

• If is written as A = P + Q, where P is symmetric and Q is skew symmetric matrix.

Write matrix P.

• If

• If is a square matrix s.t , write the value of , I is unit matrix.

• If the matrix is a skew symmetric matrix, find

• If

• Let Then show that using this result find

• Find matrix

• Using elementary row transformation find the inverse of the matrix,

• In a parliament election, a political party hired a public relations firm to promote its

candidate in three ways : telephone, house calls and letters. The cost per contact ( in paise)

is given in matrix A as

cost per contact

for telephone, house calls and letters(in rows) respectively

The number of contacts of each type made in two cities X and Y as given in the matrix

B as

Find the total amount spent by the party in the two cities.

Chapter-4

DETERMINANTS

• If

• For what value of x, the matrix is singular ?

• If A is a square matrix of order 3 with (ii)

• If the coordinates of vertices of an equilateral triangle with length of sides a are

then show that

• Using properties prove that .

• Using properties of determinants, solve for x,

• In a triangle ABC, if

• If and . Prove that

• If and use it to solve the following system of equations .

• Use the product

to solve the system of equations .

CLASS 12

BUSINESS STUDIES

• Revise and do all short answer, long answer and case studies of chapter 1 to 4 from NCERT Book. • Complete project work on “Financial Market” or “Marketing Management” as allotted particularly to you by subject

teacher

ACCOUNTANCY

• Revise chapter “Non-profit Organization”,” Fundamental of Partnership Accounts” and “Valuation of Goodwill”. • Do any 10 questions each from NPO, Fundamental of Partnership Accounts and Valuation of Goodwill. • Collect Annual Report of two allotted Company as allotted to you particularly by subject teacher.

कक्षा-बारहव ीं

ववषय-वहींद केन्द्रिक

पत्र लेखन:-

१, दूरदर्शन के प्रसाररत कायशक्रम ीं क सम क्षा करते हुए दूरदर्शन के वनदेर्क क पत्र वलन्द्रखए और अपने सुझाव भ वलन्द्रखए .

२,मवहलाओीं क असुरक्षा क बदत घटनाओीं पर व ींता प्रकट करते हुए वकस प्रवतवित समा ार –पत्र के सींपादक क पत्र वलन्द्रखए तथा उसके

समाधान के वलए समुव त उपाय भ वलन्द्रखए .

३.बढत आबाद देर् क बबाशद ववषय पर आलेख वलन्द्रखए

४.महानगर ओर पलायन क समस्या पर फ र वलन्द्रखए .

५.जनसीं ार के माध्यम पर आधाररत ब स महत्वपूर्श प्रश्न तैयार करके वलन्द्रखए .

६ वपछले पााँ वषों के स ब एसई प्रश्नपत्र ीं क हल करें .

७-पढाये गये सभ पाठ क याद कर .

श्र मत रामश्र देव म ना

प .ज .ट . वहींद

Class 12 (Political Science)

• Collect full information about any five political parties.

• Paste the pictures of their party symbols with full information and write down their origin and ideologies.

• The mentioned work is to be done in your notebook.