Letter B Synonyms Antonyms Sentence Based MCQs

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Letter – B Synonyms Antonyms MCQs

Class 7 Maths Linear Equations in One Variable

Mathematics

Class – 7 Linear Equations in One Variable Worksheet

Chapter – Linear Equations in One Variable

Class – 7

Section A: Multiple Choice Questions (MCQs)

  1. What is the solution to the equation (3x + 7 = 22)?
    a) 5
    b) 4
    c) 7
    d) 6
  2. In the equation (5y – 3 = 2), the value of y is:
    a) 0
    b) 1
    c) 5
    d) 2
  3. If (2a = 14), then a is:
    a) 6
    b) 8
    c) 7
    d) 9

 

  1. Which of the following equations has (x = 3) as its solution?
    a) 2x + 3 = 9
    b) 3x – 2 = 7
    c) x + 4 = 9
    d) 4x = 16
  2. What is the value of x in the equation (x + 5 = 12)?
    a) 6
    b) 8
    c) 7
    d) 9

 

Section B: Fill in the Blanks

  1. The solution of (x – 3 = 5) is __.
    2. In the equation (4y = 24), y equals __.
    3. If (3a + 5 = 20), then a is equal to __.
    4. The equation (x – 2 = 0) has the solution (x = ……..).
    5. To isolate x in (5x = 35), divide both sides by __.

 

Section C: Short Answer Questions (Easy)

  1. Solve: (x + 7 = 15).
    2. Find the value of y in (2y = 18).
    3. Solve the equation: (5a – 3 = 7).
    4. If (4x + 5 = 13), find x.
    5. What is the value of x in the equation (x – 6 = 3)?

 

Section D: Moderate Questions

  1. Solve: (3x + 4 = 22).
    2. Find the value of y for which (5y – 15 = 10).
    3. Solve the equation: (2x + 6 = 14).
    4. What is the value of x in 7x – 3 = 25?
    5. If (6z + 2 = 20), solve for z.

 

Section E: Long Answer Questions

  1. Solve the equation: (4x + 8 = 3x + 15).
    2. If (5y + 3 = 4y + 12), find the value of y .
    3. Determine the value of a in (6a – 5 = 3a + 13).
    4. Solve for x in (2x – 3 = 7x + 12).
    5. What is the solution to the equation (8p – 4 = 6p + 14)?

 

Section F: Word Problems

  1. Rohan’s age is 4 years more than twice his brother’s age. If his brother is \(x\) years old and Rohan is 14 years old, find the age of Rohan’s brother.
  2. A number when multiplied by 3 and then decreased by 7 gives 8. Find the number.
  3. The sum of two consecutive numbers is 37. Write an equation to find the numbers.
  4. Anil has 3 times as many marbles as Sunil. If Sunil has \(x\) marbles and Anil has 21 marbles, find the value of x .
  5. The perimeter of a rectangle is 60 cm. If the width is 8 cm less than the length and the length is \(x\) cm, find the values of length and width.

 

Answer Key

Section A: MCQs

  1. a) 5
    2. d) 2
    3. c) 7
    4. a) (2x + 3 = 9)
    5. c) 7

Section B: Fill in the Blanks

  1. 8
    2. 6
    3. 5
    4. 2
    5. 5

Section C: Short Answer Questions

  1. (x = 8)
    2. (y = 9)
    3. (a = 2)
    4. (x = 2)
    5. (x = 9)

Section D: Moderate Questions

  1. (x = 6)
    2. (y = 5)
    3. (x = 4)
    4. (x = 4)
    5. (z = 3)

Section E: Long Answer Questions

  1. (x = 7)
    2. (y = 9)
    3. (a = 6)
    4. (x = -3)
    5. (p = 9)

Section F: Word Problems

  1. Brother’s age = 5 years
    2. Number = 5
    3. Let the consecutive numbers be x and (x+1); (x + x + 1 = 37) gives (x = 18), so numbers are 18 and 19.
    4. (x = 7)
    5. Length = 19 cm, Width = 11 cm

 

Class 9 Matter in Our Surrounding Extra Questions

Class 9

Matter in Our Surrounding

Extra Questions

 

  1. A substance has no mass. Can we consider it as matter?
    Ans. No, matter must have mass and occupy space.

 

  1. Select the substances from the following which do not have the property of sublimation:
    Camphor, Potassium permanganate, Copper sulphate, Naphthalene.
    Ans. Potassium permanganate and copper sulphate do not have the property of sublimation.

 

  1. Evaporation causes cooling. Why?
    Ans. Evaporation needs heat energy which it takes from surrounding and leads to degrees in temperature, i.e cooling take place.

 

  1. Convert 300 K into Celsius scale and –10°C into Kelvin scale.
    Ans.
    (i) 300 K – 273 = 27°C
    (ii) –10°C + 273 = 263 K

 

  1. Name the property of gases due to which it is possible to fill CNG in cylinders for using as fuel in cars.
    Ans. Gases can be easily compressed.

 

  1. Rubber band changes its shape. Is it solid?
    Ans. Yes, it is solid because it regains its shape.

 

  1. Does evaporation cause a physical change or a chemical change?
    Ans. Evaporation is a physical change.

 

  1. List any two properties of particles of matter.
    Ans.
    (i) There is space between particles of matter.
    (ii) The particles of matter are extremely small in size which cannot be seen even with a powerful microscope.

 

  1. Give reasons to explain why it takes longer to dry wet clothes in humid weather?
    Ans. It is because air is already saturated with water vapours therefore it will not be able to hold more water vapours easily.

 

  1. Convert 370 K into Celsius Scale (°C).
    Ans. 370 K – 273 = 97°C

 

  1. Arrange three states of matter in the increasing order of rate of diffusion.
    Ans. Rate of Diffusion : Solids  <  Liquids  <  Gases

 

  1. How does spreading of wet clothes quicken their drying? Explain.
    Ans. It increases exposed surface area due to which water gets evaporated at faster rate.

 

  1. What is dry ice? What happens when the pressure under which it is stored is decreased to 1 atmosphere?
    Ans. Dry ice is solid carbon dioxide. If pressure is decreased it will change into vapours.

 

  1. With which name is the phenomenon of changing of a liquid into its vapours at temperature below its boiling point known?
    Ans. Sublimation.

 

  1. The melting points of three solids X, Y and Z are 298 K, 314 K and 398 K respectively. Arrange these in increasing order of their inter particle force of attraction.
    Ans. X < Y < Z is the order of increasing inter particle attraction. Higher the force of attraction, higher will be melting point.

 

  1. What is full form of CNG? Mention its one property which makes it so important.
    Ans. Compressed Natural Gas. It does not create pollution on combustion, it is clean fuel which makes it so important.

 

  1. Write one important characteristic property of particles of matter.
    Ans. Particles of matter attract each other.

 

  1. When camphor is heated in a China dish, it changes into gas without changing into liquid. What is the name given to this change of state?
    Ans. Sublimation.

 

  1. Sponge is solid but still it can be compressed. Why?
    Ans. Sponge has pores which has air, therefore, it can be compressed.

 

  1. Why is the temperature remain constant during sublimation?
    Ans. It is because heat of vaporisation and fusion overcome the force of attraction between particles.

 

  1. What is evaporation?
    Ans. It is process of converting liquid into vapours.

 

  1. When a solid melts, its temperature remains constant, so where does the heat energy go? What is the name given to this heat?
    Ans. The heat energy is used to overcome intermolecular force of attraction. It is called latent heat of fusion.

 

  1. Convert the following thermometer readings into kelvin –100°C, 200°C.
    Ans.
    –100°C + 273 = 173 K
    200°C + 273 = 473 K

 

  1. Why is light not considered as a matter?
    Ans. It is because it does not occupy space.

 

  1. Is smell of clove or cardamom a matter?
    Ans. No, because it does not have mass and does not occupy space.

 

  1. What happens to the boiling point of a liquid when atmospheric pressure decreases?
    Ans. Boiling point of liquid is the temperature at which its vapour pressure becomes equal to external pressure (atmospheric pressure).
    Thus, when atmospheric pressure decreases, boiling point of liquid also decreases.

 

  1. What are heterogeneous mixtures?
    Ans. Those mixtures whose composition is not same throughout are called heterogeneous mixtures, e.g. sulphur powder and iron filings.

 

  1. Why mixture does not have a fixed melting or a fixed boiling point? Give two reasons.
    Ans.
    (a) It does not have fixed composition.
    (b) It does not have uniform ordered arrangement of particles.

 

  1. When common salt is dissolved in water, what will be the change in volume and why?
    Ans. There is no change in volume. It is because common salt particles occupy the spaces between molecules of water.

 

  1. Write one similarity between three states of matter.
    Ans    . All the three states of matter are made up of particles.

 

  1. What is tincture of iodine?
    Ans    . A solution of iodine in alcohol is known as ‘tincture of iodine’.

 

  1. On suffering from fever which will lower down your body temperature more, ice or ice cold water? why?
    Ans. Ice will lower down body temperature more because it will take heat of fusion from our body and feed fever will come down faster.

 

  1. Define latent heat of vaporisation.
    Ans    . Latent heat of Vaporisation. It is defined as heat required to convert 1 kg of liquid into vapours completely at its boiling point.

 

  1. People sprinkle water on open ground or roof on a hot sunny day. Why?
    Ans. It is because water gets evaporated by taking heat from surface of roof or ground and causes cooling.

 

  1. Give reason : During summer sitting under a fan makes us comfortable.
    Ans. Fan takes hot air up and cold air comes down which makes us comfortable. It also helps in evaporation of sweat which causes cooling.

 

 

Synonyms Antonyms MCQ

Synonyms Antonyms Paragragh based MCQs - A

Synonyms Antonyms MCQ

Synonyms Antonyms MCQs based on Letter - A

Practice Sentences Based MCQs

Coding – Decoding MCQs

Student Registration

Instructions

Total number of questions:

Result

Total Question
Attempt
Correct
Wrong
Percentage
Your Total Score

Coding – Decoding

 

Coding-Decoding – Preparation Guide

What is Coding-Decoding? Coding-Decoding is a logical reasoning topic frequently asked in competitive and entrance exams like CUET, SSC, Banking, Railways, and other aptitude-based tests. It tests a student’s ability to understand patterns, relationships, and logic behind words, numbers, or symbols.

Types of Coding-Decoding Questions

  1. Letter Coding Words are coded using certain alphabetical patterns. Example: If CAT is coded as DBU, then DOG is coded as?
  2. Number Coding Words are coded with numbers. Example: If PEN = 35, INK = 34, then what is the code for PAPER?
  3. Symbol Coding Symbols replace words or vice versa. Example: If @ means +, # means -, then solve: 10 # 2 @ 4 = ?
  4. Substitution Coding One thing is substituted with another name. Example: If ‘Red’ means ‘Blue’, ‘Blue’ means ‘Green’, what is the color of the sky?
  5. Mixed Letter Coding Several sentences are coded together to find the meaning of a particular word. Example: Based on given code statements, decode the meaning of certain words.

Tips to Solve Coding-Decoding Questions

Understand the Pattern: Check whether the logic is based on:
  • Alphabet position (A = 1, B = 2…)
  • Reverse alphabet (Z = 1, Y = 2…)
  • Shifting (forward or backward)
  • ASCII values (advanced level)
Break the Word: Split the word into letters and analyze each part. Write Positions of Letters: This helps in quickly spotting the shift in alphabets. Practice Reverse Coding: Be ready to decode from code back to original. Keep Note of Repetition: If a word appears multiple times with different codes, look for patterns. Eliminate Options: In MCQs, often eliminating wrong choices leads you to the right one. Avoid Assumptions: Stick to the logic shown in the question. Never apply general meaning.

Common Mistakes to Avoid

Overthinking – Don’t look for complex patterns if simple logic works. Skipping practice – Coding-Decoding requires regular practice to get comfortable. Ignoring options – Many questions can be solved quickly by testing the given options. Confusing position values – Always double-check your A=1 to Z=26 placement.

Quick Practice Example

If TRUST = UVSUT, then how is FAITH coded?

Solution Tip:

Check if one letter is changing while the rest remain the same.

Final Strategy

Practice different types regularly Time yourself while solving Focus on accuracy over speed initially Prepare short notes of common patterns  
Practice MCQs Online

CUET Exam Preparation

CUET General Test syllabus 

  1. Letter and Symbol Series
  2. Verbal Reasoning
  3. Non-verbal series
  4. Analogies
  5. Coding and Decoding
  6. Judgment and Reasoning
  7. Statement and Conclusion
  8. Statement and Argument
  9. Analytical Reasoning
  10. Blood relations
  11. Direction Test
  12. Mirror and Water Images
  13. Classification

 

Quantitative Aptitude Syllabus

  1. Time and Work
  2. Partnership
  3. Profit and Loss
  4. Boats and Streams
  5. Problems on Trains
  6. Simplification and Approximation
  7. HCF and LCM
  8. Percentages
  9. Ratio and Proportion
  10. Geometry
  11. Mensuration 2D and 3D
  12. Statistics
  13. Application of Mathematics
  14. Probability
  15. Number System
  16. Algebra
  17. Arithmetic Number Series
  18. Arithmetical Reasoning
  19. Data Interpretation
  20. Data Sufficiency
  21. Problem-Solving
  22. Problems on Age
  23. Number Series

 

General Knowledge

  1. Important Days
  2. Indian History
  3. Books and Authors
  4. Indian National Movement
  5. Awards and Honors
  6. General Polity
  7. Countries & Capitals
  8. Science & Technology
  9. Sports
  10. Science – Inventions & Discoveries etc.

 

 

CUET English Syllabus

Reading Comprehension:

There will be three types of passages (maximum 300 words):
  • Factual
  • Narrative
  • Literary

Verbal Ability

  • Rearranging the parts
  • Match the following
  • Choosing the correct word
  • Synonyms and Antonyms