Subject: Mathematics (2077)            


(Class: 8)

Attempt all the questions.

1. What do you understand by angles? Mention all the belonging names, figure with labeling and respective results in tabulated form.             2+6=8

2.  In the given figure, if AB is parallel to CD then find the value of x.       7






                            

3. Verify experimentally that the base angle of isosceles triangle are equal.  5

4. Prove that                                 

and find ÉP,ÉR and length of PR.                                        






5. A bicycle wheel makes 5000 revolutions in moving 11km. Find the diameter of that wheel.                                                                                                                                   7

6. In the adjoining figure, PQRS is a square, find the area of shaded portion.            5

 






7. If the distance between the points (0,6) and (a,0) is 6 units then find the value of a.                                                                                                                                            2

8. Find the value of (x-3)3 using formula.                                                                          2

9. Find the area of the given arrowhead.                                                                           2







10. What do you understand by Cardinality of a sets? If n(U)=300, n0(M)=150, n0(T)=144 and n(M3T)=33, then find the value of n(M4T) and its complement too.

 Subject: Computer (2077)

 Subjective Questions

1.    Write down the proper steps for the followings:                    (2X2=4+1)

a.     Changing a word file in windows desktop.

b.    Inserting watermark in document.

c.     To insert a blank table.

2.    Numerical                                                                                       (2X2=4+1)

i.      Convert the following decimal number into hexadecimal number.

a.     (4560)10                b.     (5656)10

ii.    Convert the following hexadecimal into decimal number

a.     (ABC)10                  b.     (DEF)10

iii.  Multiply

a.     (101010 X 111)  b.      (110011 X 110)

3.    Very short question.                                                                   (5X1=5)

a.     Who are called hacker?

b.    In which tab can you use to apply page setup?

c.     Where is the default location of taskbar on desktop?

d.    Who was the inventor of vacuum tube?

e.     Who was the founder of tabulating machine company?

4.    Short question.                                                                              (5X4=20)

a.    Why is Babbage known as the father of modern computer science? What is artificial Intelligence?

b.    Why are laptop and palmtop computers popular these days? Define GUI.

c.     What is the use of page brake? Write down the steps to perform this activity.

d.    Write any 4 provisions of the computer ethics. What is cybercrime?

e.    Define antivirus with example. What is a pseudocode?

5.    Long question any 2.                                                                   (7.5X2=15)

a.    Explain the rules for drawing flowchart. What are the types of flowchart? Explain them.

b.    What are the operators used in MS-Excel? Explain all types of operators.

c.    Explain the types of computer om the basis of user mode and on the basis of user interface.