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ISC (Science) ISC Class 12 - CISCE Question Bank Solutions

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The complement of the reduced expression of F(A,B) = ∑ (0,1,2,3) is ______.

[1] Boolean Algebra
Chapter: [1] Boolean Algebra
Concept: undefined >> undefined

A shopping mall announces a special discount on all its products as a festival offer only to those who satisfy any one of the following conditions.

  • If he/she is an employee of the mall and has a service of more than 10 years.
                                     OR
  • A regular customer of the mall whose age is less than 65 years and should not be an employee of the mall.
                                     OR
  • If he/she is a senior citizen but not a regular customer of the mall.

The inputs are:

INPUTS  
E Employee of the mall
R Regular customer of the mall
S Service of the employee is more than 10 years
C Senior citizen of 65 years or above

(In all the above cases, 1 indicates yes and 0 indicates no.)

Output: X - Denotes eligible for discount [1 indicates YES and 0 indicates NO in all cases]

Draw the truth table for the inputs and outputs given above and write the SOP expression for X ( E, R, S, C ).

[1] Boolean Algebra
Chapter: [1] Boolean Algebra
Concept: undefined >> undefined

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Mention any two properties of the data members of an Interface.

[10] Arrays, Strings
Chapter: [10] Arrays, Strings
Concept: undefined >> undefined

Given the Boolean function F(A, B, C, D) = ∑(2, 3, 6, 7, 8, 10, 12, 14, 15).

  1. Reduce the above expression by using 4- variable Karnaugh map, showing the various groups (i.e., octal, quads and pairs.
  2. Draw the logic gate diagram for the reduced expression. Assume that the variables and their complements are available as inputs.
[1] Boolean Algebra
Chapter: [1] Boolean Algebra
Concept: undefined >> undefined

Give the Boolean function F(A, B, C, D,) π(0, 1, 2, 4, 5, 8, 10, 11, 14,15).

  1. Reduce the above expression by using 4-variable Karnaugh mpa, showing the various groups (i.e., octal quads and pairs)
  2. Draw the logic gate diagrams for the reduced expression. Assume that the variables and their complements are available as inputs.
[1] Boolean Algebra
Chapter: [1] Boolean Algebra
Concept: undefined >> undefined

State any one use of interfaces in Java.

[10] Arrays, Strings
Chapter: [10] Arrays, Strings
Concept: undefined >> undefined

Reduce the above expression X (P, S, E, B) by tiifig 4-variable Karnaugh map, showing the various groups (i.e., octal, quads and pairs).

Draw the logic gate diagram for the reduced expression. Assume that the variables and their complements are available as inputs.

[1] Boolean Algebra
Chapter: [1] Boolean Algebra
Concept: undefined >> undefined

Reduce the Boolean function F (A,B,C,D) = π (0, 2, 4, 6, 8, 9, 10, 11, 14) by using 4-variable Karnaugh map, showing the various groups (i.e., octal, quads and pairs).

[1] Boolean Algebra
Chapter: [1] Boolean Algebra
Concept: undefined >> undefined

Reduce the above expression X ( E, R, S, C ) by using 4-variable Karnaugh map, showing the various groups (i.e. octal, quads and pairs).

Draw the logic gate diagram for the reduced expression. Assume that the variables and their complements are available as inputs.

[1] Boolean Algebra
Chapter: [1] Boolean Algebra
Concept: undefined >> undefined

Reduce the Boolean function F(P,Q,R,S) = (P+Q+R+S) • (P+Q+R+Sꞌ) • (P+Q+Rꞌ+S) • (P+Qꞌ+R+S) • (P+Qꞌ+R+Sꞌ) • (P+Qꞌ+Rꞌ+S) • (P+Qꞌ+Rꞌ+Sꞌ) •(Pꞌ+Q+R+S) • (Pꞌ+Q+R+Sꞌ) by using 4-variable Karnaugh map, showing the various groups (i.e. octal, quads and pairs).

[1] Boolean Algebra
Chapter: [1] Boolean Algebra
Concept: undefined >> undefined

Design a class Check which checks whether a word is a palindrome or not.

(Palindrome words are those which spell the same from either ends).

Example: MADAM, LEVEL etc.

The details of the members of the class are given below:

Class name Check
Data members/instance variables:
wrd stores a word
len to store the length of the word
Methods/Member functions:
Check( ) default constructor
void acceptword( ) to accept the word
boolean palindrome( ) checks and returns ‘true’ if the word is a palindrome otherwise returns ‘false’
void display( ) displays the word along with an appropriate message

Specify the class Check giving details of the constructor, void acceptword( ), boolean palindrome( ) and void display( ). Define the main( ) function to create an object and call the functions accordingly to enable the task.

[10] Arrays, Strings
Chapter: [10] Arrays, Strings
Concept: undefined >> undefined

Design a class Toggle which toggles a word by converting all upper case alphabets to lower case and vice versa.

Example: The word “mOTivATe” becomes “MotIVatE”

The details of the members of the class are given below:

Class name Toggle
Data members/instance variables:
str stores a word
newstr stores the toggled word
len to store the length of the word
Methods/Member functions:
Toggle( ) default constructor
void readword( ) to accept the word
void toggle( ) converts the upper case alphabets to lower case and all lower case alphabets to upper case and stores it in newstr
void display( ) displays the original word along with the toggled word

Specify the class Toggle giving details of the constructor, void readword( ), void toggle( ) and void display( ). Define the main( ) function to create an object and call the functions accordingly to enable the task.

[10] Arrays, Strings
Chapter: [10] Arrays, Strings
Concept: undefined >> undefined

How old was Jem when he broke his arm?

[1] Prose and Drama
Chapter: [1] Prose and Drama
Concept: undefined >> undefined

The first chapter focusses on telling stories. This primarily serves to ______.

[1] Prose and Drama
Chapter: [1] Prose and Drama
Concept: undefined >> undefined

What literary significance does Mr Radley’s sealing the knot-hole in the tree have?

[1] Prose and Drama
Chapter: [1] Prose and Drama
Concept: undefined >> undefined

Which one of the following lines from the novel is thematically significant?

[1] Prose and Drama
Chapter: [1] Prose and Drama
Concept: undefined >> undefined

According to legend, who was Bon Bibi’s father?

[1] Prose and Drama
Chapter: [1] Prose and Drama
Concept: undefined >> undefined

Statement 1: There was no bindi on her forehead and her arms were free of bangles.

Statement 2: Kanai was convinced that she was a foreigner.

[1] Prose and Drama
Chapter: [1] Prose and Drama
Concept: undefined >> undefined

Why was Nirmal obsessed with Morichjhapi?

[1] Prose and Drama
Chapter: [1] Prose and Drama
Concept: undefined >> undefined

What was the fate of Lucy Hamilton?

[1] Prose and Drama
Chapter: [1] Prose and Drama
Concept: undefined >> undefined
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