Maharshi Patanjali Vidya Mandir, Prayagraj CBSE …

Maharshi Patanjali Vidya Mandir, Prayagraj CBSE Question Paper 2019 (Set-1) Class 7 Computer Time : 3Hrs. | M.M. : 80 Fill in the blank :  (110=10) A computer virus___________________the normal operation of a computer. Computer virus results in loss of _______________and ___________of data. Virus_______________the computer without the permission or knowledge of the user. Virus programs are____________ _____________are designed to identify, prevent and remove virus from a computer. One drive is a free online storage facility offered by________________ A tweet is restricted upto______________characters. _______________is a process of sending and receiving text based messages over the internet. ____________is a new form of communication in which users can describe their status in short posts. State True or False : (1/210=5) A computer virus is similar to a biological virus. All virus programs cause harm to data or programs. The virus, Friday the 13 gets activated on 25 December. The creeper virus was first detected on Arpanet In the year 2002. We should equip our computer with Anti virus programs. Trojan Horses are self replicating. Virus can enter our computer through and infected pen drive. Virus has no effect on the speed of a computer. Virus increases the memory of a computer. Virus stands for vital information resources under seize. Multiple choice questions: (1/210=5) An email address consist of two parts, separated by........................symbol. (a).Dot (b).At (c).Plus An e-mail address cannot contain.................... (a) Spaces (b) Alphabets (c) Number Who is the founder of Twitter? (a) Jack Dorsey  (b) Narayan Murthy  (c) Tim Berners Lee Which virus infects the boot record (a) worm (b) Boot Virus (c) Spyware Who released the first PC virus? (a) Duke Brother (b) Wright Brothers (c) Farooq Alvi Brother Name the bars or slices that represent the data values on the chart. (a) Data series (b) Chart wall (c) Legend Which chart type displays data in the form of a circle? (a) Line (b) Pie (c) Bar The........chart displays data in the form of lines. (a) Bar (b) Line (c) Pie Which key is used to group multiple sheets? (a) Shift (b) Ctrl (c) Enter Name the option using which you can replace the replace the existing chart (a) chart type (b) chart replaces (c) chance type Answer the following in short : (110=10) In which year was the shy drive returned to one drive? Name a commonly used forum software. Which symbol indicates that an e mail has an attachment? What do you call the text in an e-mail, which is automatically added to your outgoing e-mails? What do you understand by social networking sites? What is cloud computing? Define input Statement. Write down the full form of VIRUS. What Is Internet?  Which loop will get executed first in nested for next loop? Answer the following in long : (210=20) Write about Aryabhatta and Gottfried Leibniz. Explain Number system and Its commonly used types. What are the rules to convert a decimal number into binary number? Write the rules to multiply two binary numbers. Briefly explain the Binary and Hexadecimal number system. Explain the term Trojan Horse. Write any three ways that can help In preventing a virus infection. Write the difference between spyware and malware. Define the term Accumulator. Write about Counter variable. Answer the following in detail :(35=15) Explain the term looping. Define for-Next looping statement with example. Describe the term nested loop with example. Describe the function of PAUSE statement with example. Explain the Goal seek feature of Calc. Write Basic programs :- (110=10) To print odd numbers from 21 to 39 using while loop. To print series 1, 4, 9, 16..............100 using for loop. To Input a number and check whether the number is even or odd. If the number is even, print its square, else print its cube. To input five numbers from the user and print their average and percentage. To print the series 1, 4, 7,10......Up to 10 term. Using do until loop. To print series 2, 9, 28, 65.........Up to 10 terms. Using for loop. To print series 1, 8, 27, 64.......Up to 10 terms. Using for loop. To print series 1, 2, 3, 5, 8.......Up to 10 terms. Using for loop. To print this pattern   To print this pattern  Do as directed: (15=5) 68 to (.......)2 987 to (.......)2 (1011)2 to decimal 1001101 + 100010111 111111111/1011

How many bricks of thickness 0.35cm will make a wall 1.89 m high?

Divide the following decimal number. 2.346÷2.3

A submarine was at a depth of -200 meters it ascended 50 meters what is it new depth

The backers of milk contain 4 1/2 litres 5 1/4 litres 3 3/4

What is lhs

124+659

Find the mising values

3/4 of 10/29 multiplication

A rectangular park is next to wall the remaining three sides of the park is to be friends Rohit 15.5 m of a pencing if the wall is along the length of the park park and its breadth is 3.45 m then find the cost of covering the park with grass at 12.50 per square metre

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