Sindhi (Compulsory) - Model Paper 2022 - For Class X (Science Group)

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Mathematics II
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SOLUTION
Section 'B'

Q.2: Find the solution set of the following equation.

Q.3: Find the solution set of the following equation. Also verify the answer.

Q.4: Eliminate "Y" from the following equation.

Q.5: prove that

Q.6: Prove that

Q.7: A set of data contains the values as 148, 145, 160, 157, 156, 160, 160, 165 show that mode > median >mean.

Q.8: Find S.D (Standard Deviation) from the following information.

x = 19.5, n = 10, ∑x² = 5555

Q.9: Find all the Values of the trigonometric ratios of 60°.

Q.10: Prove that
^Sinθ /_{1 + Cosθ} + ^{1 + Cosθ} /_Sinθ = 2cosecθ

Q.11: If the sides of a triangle are congruent, the angles opposite to them are also congruent.

THEOREM No.6

OR

The measure of a central angle of a minor arc of a circle is double that of the inscribed angle of the corresponding major arc.

THEOREM No.4

Section 'C'

Q.12: Find the solution set of the following equation graphically (Find three ordered pair for each equation.)
2y - 3x = 12
x + 6 = y

(Note: Find three ordered pairs only as mentioned in question)

Q.13: In any correspondence of two triangle, if one side and any two angles of one triangle are congruent to the corresponding side and the angle of the other, the two triangles are congruent.

THEOREM No.7

Q.14: Take two points P and Q at a distance 7 cm. Draw circles with the radii of 2.8 cm, 1.6 cm and centres at P, Q respectively. Draw direct common tangents of these circles. (Also write the steps of constructions).

Solution:
(i) Take two points P and Q at a distance of 7 cm from each other.
(ii) Join P and Q to draw PQ.
(iii) With centre P and radius = 2.8 cm draw a circle.
(iv) With centre Q and radius = 1.6 cm draw a circle.
(v) Bisect the line segment PQ at point Q.
(vi) Taking 0 as centre and radius = PO or OQ, draw a circle intersecting the previous circles at points D, E, F and G.
(vii) Join D to E and F to G.
(viii) Hence DE and PG are direct common tangents to these circles.
(ix) Line segments joining the points of contact arc = 6.9 cm i.e. DE = 6.9 cm and PG = 6.9 cm.

OR

Opposite side and angles of a parallelogram are congruent. Prove it.

THEOREM No.11

Physics II (English And Urdu) - Model Paper 2022 - For Class X (Science Group)

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Solution

SECTION 'B'

Short Question & Answer

Q.2: Explain the function of Inverter.
Ans: Function Of Inverter:
The Not Gate is a digital circuit that has a single input and single output. It is also called inverter because it performs a basic logic function called inversion or complementation. The Inverter has the following functions:

• The purpose of the inverter is to change one logic level to the opposite level.
• In terms of bits, it changes a 1 to 0 and vice-versa.
• NOT gate is called the inverter because output state is always opposite to the input state, so when the input is low signal, output is high signal and vice-versa.
• In digital logic, an inverter is a logic gate which implements logical negation.

OR

The NOT gate is known as the Function Inverter. The output of a NOT gate is the inverse of the input. It is represented by a bar on the top of the output. The NOT gate is a digital circuit that has a single input and a single output.

Q.3: Why do we use Header Files?
Ans: Purpose Or Use Of Header File:
The primary purpose of a header file is to propagate declarations to code files. Header files allow us to put declarations in one location and then import them wherever we need them. This can save a lot of typing in multi-file programs.

OR

When we want to use any function in our C++ program then first we need to import their definition from C++ library. For importing their declaration and definition we need to include header file in program by using #include. Header file include at the top of any C++ program. The primary purpose of a header file is to propagate declarations to code files. Header files allow us to put declarations in one location and then import them wherever we need them. This can save a lot of typing in multi-file programs.

Q.4: What are the Advantages of Developing Algorithms?
Ans: Advantages of  Developing Algorithms:

1. It helps in reducing the Chances of Error in a Program.
2. It is a Step by step Representation of a Program that makes it Easier to Understand.
3. It Does not involve any Programming Language which helps anyone to understand it without being a Programmer.
4. Algorithm Breaks down the problem into smaller steps which makes it easier to convert the instructions into a Program.

Q No.5: List any three advantages of IDE?
Ans: Advantages of Using IDE:

1. It gets you less time and Effort in Writing a Program.
2. It helps in different programmers to Work on the same Project.
3. It helps in Debugging the Syntax Errors in the Program.
4. It makes the Programming Easier through Shortcut Keys.

Q.6: Write the function of "For" loop?
Ans: Function Of "For Loop":
For Loop: The for loop is used to repeat a statement or a block of statements for a specific number of times. The for loop includes initialization of counter, the condition and the increment.

Syntax:
for(initialization; , condition; , increment or decrement)
{
statements;
}

OR

1. "for" Loop:

• It is used to repeat a statement or a block of statements or a sequence of statements for a specified number of times.
• It is a pre-test loop as condition is tested at the start of loop.
• It starts with keyword “for” followed by loop expression parenthesis.
• Loop expression includes 
  (i) Initialization, 
  (ii) Test Expression
  (iii) Increment Or decrement
• The body of the loop may have one or more statements. If there are more than one statements then they are enclosed in braces.

Syntax:
 for(initialization; condition testing; increment/decrement)
 {
 statement(s);
 }

Q.7: List 5 Common High Level Languages used and Describe any one?
Ans: Common High Level Languages:

1. Python
2. Java
3. C++
4. C#:
5. JavaScript:
6. Pasacl
7. COBOL
8. FORTRAN
9. BASIC

Python:
Python is used for Data Analytics, Machine Learning, AI Programming, and many other tasks
Uses in Popular Apps: Google, Spotify, Instagram

Java:
Java Language is Mostly used for Mobile Application Development
Some popular uses of Java are: Facebook, Messenger, Whatsapp

C / C++:
C is general purpose language that also works well with microcomputers. It is useful for developing operating systems, spreadsheets programs, database programs, Browsers. C++ is a version of C that incorporates object-oriented technologies. Some Popular uses are: Windows, Mozilla Firefox

C#:
C# (C-sharp) is Mostly used in Developing Games and Web Applications Some Popular Uses are: Temple Run, Pubg

JavaScript:
Used in Developing Websites Some Popular Uses are: Netflix, Facebook Web

Pascal:
A language that is widely used on microcomputers and easy to learn is Pascal, named after Blaise Pascal, a French mathematician. This language has become quite popular in computer science educational programs.

COBOL:
COBOL which stands for Common Business-Oriented Language is one of the most frequently used programming languages in business. Though harder to learn than BASIC its logic is easier to understand for a person who is not a trained programmer.

FORTRAN:
Short for Formula Translation, FORTRAN is a widely used scientific and mathematical language. It is very useful for processing complex formulas. That’s why many scientific and engineering programs have been written in this language.

BASIC:
BASIC, in full Beginner’s All-purpose Symbolic Instruction Code, computer programming language is One of the simplest high-level languages, with commands similar to English, it can be learned with relative ease even by schoolchildren and novice programmers. Its small size and simplicity made BASIC a popular language for early personal computers.
(Note: Name any 5 and describe any one as mention in question)

Q.8: Why do we need a language translator?
Ans: Language Translator:
The computer can only understand the Machine Language which can be difficult to understand by Humans. So, the Programmers use High-Level Language to build a Program. This high-level language program is called Source Code. The translator is used to convert the Source Code into Machine Language which is also Called Object Code.

OR

Computers only understand machine code (binary) which is difficult to read, write and maintain. Therefore Programmers prefer to use a variety of high and low-level programming languages. Language translators are used to translate high level language into machine language so that computer can act upon the instruction given to it.
A program written in any language is called as source code.A translator takes a program written in source language as input and converts it into a machine language as output. It also detects and reports the error during translation.

Q.9: What is the basic difference between \n and \t?

• Ans: Difference Between \n And \t:
• \n: “n” stands for Newline or line feed. It inserts a new line and the cursor moves to the beginning of the next line.
• \t: “t” stands for Horizontal tab. It is used to shift the cursor to a couple of spaces to the right in the same line.

Q.10: What are the two basic concept of scratch environments?
Ans: Basic Concepts Of Scratch Environment:
The two basic concepts of Scratch Environment are:

1. Sprite
2. Script

1. SPRITE:
The sprites are the images of cartoons, characters or objects that we add in our project. We can have multiple sprites in our project but at least one sprite is always needed for the project. Cat is the default sprite in scratch.

2. SCRIPT:
To create a game, interactive story, animation or art work in scratch, We must add visual instructions to tell a sprite exactly what to do. The scripts are instructions that make sprites perform a task. Each sprite in a scratch project has an area for scripts through which it is programmed. Clicking on a script's thumbnail in the sprite pane will bring up the script area of that sprite.

OR

The scripts are the visual instructions to tell a sprite what to exactly do. In short, Scripts are the instructions in a visual form that make a sprite perform a specific task.

Q.11: Write the purpose and syntax of the following functions (any 2): (i) cin (ii)getch() (iii) cout
Ans: (i) cin statement:

• cin is a pre defined object that reads data from the keyboard with the extraction operator(>>).
• It allows to accept data from standard input devices.
• Syntax: cin >> varaible;

(iii) getch ():

• It is a predefined function.
• It is defined in conio.h.(Console input and output header file).
• It stands for get character.
• It is used to get a single character input from user (keyboard) during execution of program.
• The entered character it is not displayed or printed on the screen.
• It is used to hold the output screen until the user press any key from the keyboard.
• Syntax: int getch();

(iii) cout statement:

• cout stands for "Character Output". Here 'C' menas "character" and 'Out' means "output".
• Cout is a predefined object in C++. It is used to produce output on the standard output device which is usually the display screen or monitor.
• The data needed to be displayed on the screen is inserted in the standard output stream (cout) using the insertion operator (<<).
• Syntax: cout << variable or cout <<exp./string << variable

Q.12: What is the purpose of Jump statements?
Ans: Jump Statements:
Jump statements change the execution of a program from its normal sequence.
Following are the jump statements in C++

1. Break
2. Continue
3. Goto
4. Return
5. exit

Q.13: Write down three advantages of user define function..
Ans: Advantages of User-Defined Functions:

1. The user-defined functions breaks the complex code into simpler and small one’s.
2. It increases the readability of the program.
3. It is easy to debug small user Defined functions.
4. It can help in reducing the repetition of the same code.

OR

Ans: Advantages Of User Define Function In C++:
User defined functions in C programming has following advantages:

1. Reduction in Program Size:
   Since any sequence of statements which are repeatedly used in a program can be combined together to form a user defined functions. And this functions can be called as many times as required. This avoids writing of same code again and again reducing program size.
2. Reducing Complexity of Program:
   Complex program can be decomposed into small sub-programs or user defined functions.
3. Easy to Debug and Maintain:
   During debugging it is very easy to locate and isolate faulty functions. It is also easy to maintain program that uses user defined functions.
4. Readability of Program:
   Since while using user defined function, a complex problem is divided in to different sub-programs with clear objective and interface which makes easy to understand the logic behind the program.
5. Code Reusability:
   Once user defined function is implemented it can be called or used as many times as required which reduces code repeatability and increases code reusability.

(Note: Write down any three advantages as mentioned in question)

Long Question Answers

Q.14: What is the difference between source code and object code?
Ans: DIFFERENCE BETWEEN SOURCE CODE AND OBJECT CODE

S.NO.	SOURCE CODE	OBJECT CODE
1.	Source code is another name for source program.	Object code is another name for object program.
2.	A collection of computer instructions written using a human readable programming language.	A sequence of statements in binary digits that is generated after compiling the object code.
3.	Contains English words according to syntax of programming language.	Contains binaries.
4.	Programmers create the source code.	Compilers create the object code.
5.	It is the input to the computer.	It is the output to the computer.
6.	Programmers can read the source code.	Machines can read the object code.

OR

S.NO.	SOURCE CODE	OBJECT CODE
1.	Source code is another name for source program.	Object code is another name for object program.
2.	Source code is generated by humans or programmers.	Object code is generated by a compiler or another translator.
3.	Source code is human-understandable.	Object code is not human-understandable.
4.	Source code is high-level code.	Object code is low-level code.
5.	It is less close to the machine.	It is more close to the machine.

Q.15: Draw and define flowchart symbols?
Flowchart Symbols:
Flowchart is made up of different symbols to represent or show program and its flow. Some of them are as follows:

Q.16: Draw the Logic circuit of the following Boolean expression
a) Y = ABC (A + D)
b): X = AB (C + D)

a) Solution:

b) Solution:

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Biology II (English And Urdu) - Model Paper 2022 - For Class X (Science Group) - Solved By Sir HASSAN RAZA

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Biology II
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Pakistan Studies (Compulsory) (English And Urdu) - Model Paper 2022 - For Class X (Science Group)

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Pakistan Studies (Compulsory) مطالعہ پاکستان
Model Paper 2022
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ENGLISH-II (Compulsory) - Model Paper 2022 - For Class X (Science Group)

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ENGLISH (Compulsory)
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SECTION "B" (SHORT ANSWER QUESTIONS) (45 Marks)

Q.2 Answer any FIVE of the following questions in two to three sentences each.
i. What do you know about the folk-music and Sindhi Embroidery of Sindh?
Ans: The folk music of Sindh is very sweet and melodious. The 'Ek-Tara' and 'Alghoza’ are popular instrument used in typical of this region.
Most of the crafts of Sindh emerged from the embroidery is admired all over Pakistan as well as in foreign countries. These handicrafts include dresses of both men and women are colorfully embroidered in silk thread, beads and mirror. Mirror work is also done on purses and cushions.

ii. What role do positive and negative thoughts play in our life?
Ans: Our success or failure depends up on our state of mind. A person needs to have a positive thinking to attain some goal in life. Those who think high can get the highest aims in life. But if our thinking is negative, it is certain that we will lose.

OR

Every thing depends upon will, determination and self confidence of a person. If we think that we are defeated and have no courage it is sure that we will not get success. But if we begin our work with full confidence we will surely win. Our success or failure depends up on our state of mind. Positive thinking always result in success, while negative weaken our will and self confidence so we lose.

iii. What is the process of mending a puncture at a bicycle repair shop?
Ans: The process of mending a puncture at a cycle shop is a different one. A kind of half solid rubber solution is applied to the punctured part of the tube. It is heated at a certain temperature for some time in a machine which is a sort of press. The solution melts and sticks to the tube so that both are inseparable. This method of mending the puncture is common these days and is more durable.

iv. Which action of the rich man pleased everybody in the court?
Ans: The rich man being generous and kind immediately forgave the beggar. He also took out his purse and gave him a handful of coins. This noble act of the rich man pleased everybody in the court.

v. What is a very important quality of a good teacher?
Ans: The most elegant quality of a teacher is that he takes keen interest in learning from every source. He does not hesitate in capturing knowledge from every point in life. He does not keep himself committed to the books only. But tries to gain knowledge from any and everyone. even those younger or less gifted than himself. It means that he remains student forever. So, the good teacher is one who is enthusiastic for gaining knowledge from every source of life.

vi. What did king Faisal consider very important for the progress of his people? What did he do in this connection?
Ans: Faisal considered education very important for the progress of his people.
He opened many schools and universities where students were not only given free education but also awarded stipends to meet other need.

vii. Why does the poet say that the prayer for mother on earth mingles with that said in heaven?
Ans. We all believe that the prayers said on the earth get mixed with the prayers said by the angels and saints in heaven. So the poet says that fathers, sons and daughters are praying loudly for the blessings of God on the hand of mothers which mixed with the sacred song sung by angels. She is one who wipes away all the worries and anxieties from man’s mind and encourages him to face the dangers with grace and dignity. In real sense she is the ruler of the world.

Q.3 Do as directed. (as instructed in the bracket)
i) (use preposition)

• He succeeded in getting what he wanted
• Open your book on page No. 63.

ii) (use article)

• This is the most important question.
• It is not an easy task to arrange a party.

iii) (Change the voice)

• Where did they spend all the money?
  Ans: Where was all the money spent by them?
  
  
• The Carpenter makes a beautiful dressing table.
  Ans: A beautiful dressing table is made by the Carpenter.
  
  
• He will convey my important message to him.
  Ans: My important message will be conveyed to him by him.
  
  
• Let all the windows be opened before sunrise.
  Ans: Open all the windows before sunrise.
  
  
• You are requested to wait for your turn in a queue.
  Ans: They request you to wait for your turn in a queue. OR
  He/She requests you to wait for your turn in a queue. OR
  Kindly/Please wait for your turn in a queue.

iv) (Change the Narration)

• He says to them, "you are doing your work."
  Ans: He tells them that they were doing their work.
  
  
• She said "Fish cannot live without water."
  Ans: She said that Fish cannot live without water.
  
  
• He prayed that his son might pass the examination that year.
  Ans: He said,"May my son pass the examination this year."
  
  
• They exclaimed that those mangoes were very sweet.
  Ans: They said, "These mangoes are very sweet!" OR
  They said, "How sweet these mangoes are!"
  
  
• She said to him "Did you see the snake in the compound of this house?"
  Ans: She asked him if he had seen the snake in the compound of that house.

v) Do as directed (continue):
(i) (change into affirmative)

• Did he go there in her mother's absence?
  Ans: He went there in her mother's absence.

(ii) (change into future continuous)

• Girls are playing hide and seek in the moon-lit night.
  Ans: Girls will be playing hide and seek in the moon-lit night.

(iii) (change into past perfect continuous)

• Has it been drizzling since noon?
  Ans: Had it been drizzling since noon?

(iv) (change into interrogative)

• Thirsty crow does not fly here and there.
  Ans: Does thirsty crow not fly here and there?

(v) (change into negative)

• The bell had rung when I reached the school.
  Ans: The bell had not rung when I reached the school.

(vi) (punctuate)

• now it is my turn said he to them
  Ans: "Now it is my turn," Said he to them.

Q.4 Use any TEN of the following idioms in your own sentences.

1. To beat about the bush
2. To make both ends meet
3. Day in and day out
4. With heart and soul
5. With a high hand
6. To save something for the rainy days
7. To nip in the bud
8. To end in smoke
9. To wind up
10. In black and white
11. Far and wide
12. With flying colours.

1. To beat about the bush:
Meaning: To go around the topic in order to avoid the point.
Sentences: Say exactly what you mean and stop beating about the bush. OR
If you have got bad news, don't beat about the bush come straight to the point.

2. To make the both ends meet:
Meaning: To be able to live within one’s income.
Sentences: I had to take up a part time job to be able to make the both ends meet. OR
Due to inflation, salaried people can't make both ends meet.

3. Day in and day out:
Meaning: Daily, day after day.
Sentences: I worked day in and day out, for a whole month to prepare for the exams. OR
I've been warning you day in and day out, that you should bring all your books to school.

4. With heart and soul:
Meaning: All one’s energies and interest.
Sentences: That teacher is very popular because she works with heart and soul. OR
 It's no use having an employee who does not put heart and soul in his work. OR
We should serve our country with heart and soul.

5. With a high hand:
Meaning: Disregarding the feeling of other.
Sentences: He settled matters with a high hand and ignored the requests of all concerned.OR
He is most unpopular because he decides matter with a high hand.

6. To same something for rainy day:
Meaning: To keep for some future necessity which may arise.
Sentences: He wasted all his savings and has save nothing for a rainy day. OR
Don't spend all your money. Keep something for a rainy day. OR
He lost all his money in gamble and didn’t save anything for a rainy day.

7. To nip in the bud:
Meaning: To stop evil in the early stages.
Sentences: The plot to overthrow the government was detected and nipped in the bud. OR
Bad behaviour in children must be nipped in the bud. OR
He should not prevail the bad atmosphere in the society and try, to nip in the bud of crimes.

8. To end in smoke:
Meaning: To have no result, to come to nothing.
Sentences: All his efforts ended in smoke. OR
Unless you preserve, your work will end in smoke. OR
The soldiers struggled hard to destroy the foe’s base but it ended in smoke.

9. To wind up:
Meaning: To bring to an end.
Sentences: That company winding up its affair. OR
I’m using my last week in the country to wind up my business here. OR
The director winded up the set due to late arrival of the artist.

10. In black and white:
Meaning: in writing.
Sentences: I will not accept your offer until I see it in black and white. OR
I cannot accept Our oral complaint. It must be in writing. OR
The teacher rejected the student’s oral application by saying that it must be in black and white.

11. Far and wide:
Meaning: over a large area.
Sentences: We searched far and wide but couldn't find the lost child. OR
This tour will take you over far and wide of the country. OR
People from far and wide places came to see to newly born baby of the Kangaroo in the zoo.

12. With flying colours:
Meaning: To emerge successfully from some difficult task.
Sentences: He passed his examination with flying colors. OR
Our team returned from the match with flying colours. OR
Pakistan succeeded in the 1965 war against India with flying colours.

Q.5 Translate the following paragraph into Urdu/Sindhi.
Ans: Translation:
1. A newspaper has become a part of our life.
In urdu: اخبار ہماری زندگی کا حصہ بن چکا ہے۔
In sindhi: اخبار اسان جي زندگيءَ جو حصو بڻجي چڪي آهي.

2. It brings to us news from all corners of the world.
In urdu: یہ ہمارے پاس دنیا کے کونے کونے سے خبریں لاتا ہے۔
In sindhi: اهو اسان کي دنيا جي ڪنڊ ڪڙڇ سان خبرون آڻيندو آهي.

3. With half an hour, it makes us well-informed about the events of the world.
In urdu: آدھے گھنٹے میں، یہ ہمیں دنیا کے واقعات کے بارے میں اچھی طرح سے آگاہ کرتا ہے.
In sindhi: اڌ ڪلاڪ مان، اهو اسان کي دنيا جي واقعن کان چڱي طرح واقف ڪري ٿو.

4. Newspaper has various sections.
In urdu: اخبار کے مختلف حصے ہوتے ہیں۔
In sindhi: اخبار جا مختلف سيڪشن آهن.

5. It gives us information about National and international affairs.
In urdu: یہ ہمیں قومی اور بین الاقوامی امور کے بارے میں معلومات فراہم کرتا ہے۔
In sindhi: اهو اسان کي قومي ۽ بين الاقوامي معاملن بابت معلومات ڏئي ٿو.

SECTION "C" (DESCRIPTIVE ANSWER QUESTIONS) (35 MARKS)

Q.6 Write an Essay of five paragraph on any one of the following topics:

• Recent T20 match between Pakistan and India
• A terrible Accident
• Childhood as the best part of one's life.
• Effects of COVID-19.

1. Recent T20 match between Pakistan and India
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2. A Terrible Accident
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3.Childhood as the best part of one's life.
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4.Effects of COVID-19.
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Q.7 Write a letter to your friend inviting him/her to attend your brother's marriage  OR Write a letter to the editor of a newspaper about the shortage of playgrounds in your area.



Q.8 Read the Passage carefully and answers the questions given below:
A man is known by the company he keeps. A good student should avoid the company of those who keep playing all the time. Many students miss their classes and seldom do their homework properly because other students do the same. There are other hardworking students who learn their lesson while others are playing. They know that there is a time for study and there is another time for games. At the time, fixed for playing, they come out in the open. They run and enjoy time fully. They play hockey, football and cricket. They also know that playing games is good for health, they are healthy looking. A sickly student is not so quick in learning his lesson as a healthy one.

i. Whose company should a good student avoid? Why?
Ans: A good student should avoid the company of those who keep playing all the because a man is known by the company he keeps.

ii. Why do many students miss their classes?
Ans: Many students miss their classes and seldom do their homework properly because other students do the same.

iii. Why are hardworking students healthy looking?
Ans: Hardworking students know that there is a time for study and there is another time for games, because playing games is good for health. At the time, fixed for playing, they come out in the open. They run and enjoy time fully. They play hockey, football and cricket. So they are healthy looking.

iv. Why is health necessary for students?
Ans: Because a sickly student is not so quick in learning his lesson as a healthy one.

v. Write a famous proverb that comes into mind about health.
Ans: Health is wealth.

vi. Summaries this paragraph.
Ans: Good students know that there is a time for study and there is another time for games. A good student should avoid the company of those who keep playing all the time. Many students miss their classes and don't complete  their homework properly if they have company of non-serious students. There are other hardworking students who learn their lesson while others are playing. They also know that playing games is good for health, they are healthy looking.

vii. Give it a suitable heading.
Ans: Quality Of Good Students.

viii. Write noun of: know.
Ans: Knowledge

ix. Write past participle form of: run, keep.

S.NO.	Words	Past Participle
1.	Run	Run
2.	Keep	Kept

x. Give antonym of, good, do.

S.NO.	Words	Past Participle
1.	Good	Bad
2.	Do	Give up

English Literature - Model Paper 2022 - For Class IX (Science Group)

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English Literature
Solved Model Paper 2022
For Class IX (Science Group)