📌One liner on Motion chapter
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🔵 Uniform Circular Motion (UCM)

Uniform circular motion is motion of a body in a circular path with constant speed but changing velocity.

The acceleration in UCM is called centripetal acceleration, always directed toward the center.

Even though speed is constant, velocity changes due to change in direction.

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🟢 Uniformly Accelerated Motion (UAM)

Uniformly accelerated motion means acceleration remains constant throughout motion.

Velocity increases or decreases by equal amounts in equal intervals of time.

First equation of motion:
v = u + at

Second equation of motion:
s = ut + \frac{1}{2}at^2

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🔴 Free Fall Motion

Free fall is motion of a body under the influence of gravity only (no other force).

Acceleration due to gravity (g) near Earth surface is: g \approx 9.8, m/s^2

🕹️20 Most Important MCQs on National Highways of India
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1. National Highways in India are maintained by:
A) State Government
B) Central Government
C) Private Sector
D) Municipal Corporation
👉 Ans: B) Central Government

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2. Which organization is mainly responsible for development of National Highways?
A) RBI
B) National Highways Authority of India
C) LIC
D) SEBI
👉 Ans: B) NHAI

⸻

3. National Highways connect:
A) Only villages
B) Major cities, ports and capitals
C) Only states
D) Farms
👉 Ans: B) Major cities, ports and capitals

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4. The longest National Highway in India is:
A) NH-44
B) NH-27
C) NH-48
D) NH-19
👉 Ans: A) NH-44

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5. NH-44 runs from:
A) Delhi to Mumbai
B) Srinagar to Kanyakumari
C) Kolkata to Chennai
D) Amritsar to Jaipur
👉 Ans: B) Srinagar to Kanyakumari

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6. The shortest National Highway in India is:
A) NH-47A
B) NH-44
C) NH-27
D) NH-10
👉 Ans: A) NH-47A

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7. National Highways Authority of India (NHAI) was established in:
A) 1988
B) 1995
C) 2000
D) 2010
👉 Ans: A) 1988

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8. Golden Quadrilateral connects which cities?
A) Delhi, Mumbai, Chennai, Kolkata
B) Delhi, Jaipur, Lucknow, Bhopal
C) Mumbai, Pune, Nagpur, Hyderabad
D) Chennai, Bengaluru, Kochi, Goa
👉 Ans: A) Delhi, Mumbai, Chennai, Kolkata

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9. Golden Quadrilateral project was launched under:
A) Jawaharlal Nehru
B) Atal Bihari Vajpayee
C) Narendra Modi
D) Indira Gandhi
👉 Ans: B) Atal Bihari Vajpayee

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10. National Highways constitute approximately what percentage of total road network in India?
A) 2%
B) 5%
C) 10%
D) 20%
👉 Ans: A) 2%

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11. Which highway is known as East-West Corridor?
A) NH-44
B) NH-27
C) NH-48
D) NH-66
👉 Ans: B) NH-27

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12. East-West Corridor connects:
A) Delhi to Mumbai
B) Silchar to Porbandar
C) Srinagar to Kanyakumari
D) Kolkata to Chennai
👉 Ans: B) Silchar to Porbandar

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13. North-South Corridor mainly follows:
A) NH-27
B) NH-44
C) NH-10
D) NH-48
👉 Ans: B) NH-44

⸻

14. National Highways are numbered by:
A) State Governments
B) Central Government
C) Municipal bodies
D) Private firms
👉 Ans: B) Central Government

⸻

15. NH-48 connects:
A) Delhi to Chennai
B) Delhi to Mumbai
C) Mumbai to Kolkata
D) Chennai to Kolkata
👉 Ans: A) Delhi to Chennai

⸻

16. Which project aims to improve National Highways connectivity?
A) Make in India
B) Bharatmala Pariyojana
C) Digital India
D) Skill India
👉 Ans: B) Bharatmala Pariyojana

⸻

17. National Highways are important for:
A) Defence movement
B) Trade and transport
C) Economic development
D) All of these
👉 Ans: D) All of these

⸻

18. Toll tax on National Highways is collected by:
A) Schools
B) Hospitals
C) NHAI/authorized agencies
D) Farmers
👉 Ans: C) NHAI/authorized agencies

🕹️10 MCQs on Force Formula & Newton’s Laws

1. According to F=ma, force depends on:

A) Mass only
B) Acceleration only
C) Mass and acceleration
D) Velocity

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2. A body of mass 5 kg accelerates at 2 m/s². Find the force.

A) 5 N
B) 10 N
C) 15 N
D) 20 N

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3. Force can also be written as

F=m\left(\frac{v-u}{t}\right)

If a 2 kg object changes velocity from 4 m/s to 10 m/s in 3 s, the force is:
A) 2 N
B) 4 N
C) 6 N
D) 8 N

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4. A mass of 10 kg has acceleration 3 m/s². Force acting is:

A) 13 N
B) 30 N
C) 7 N
D) 20 N

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5. Newton’s First Law is also called:

A) Law of Gravitation
B) Law of Inertia
C) Law of Motion
D) Law of Momentum

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6. Which example best explains Newton’s First Law?

A) A ball rolling down a slope
B) Passenger falls backward when bus starts suddenly
C) Rocket launch
D) Apple falling from tree

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7. According to Newton’s Second Law, acceleration is:

A) Directly proportional to force
B) Inversely proportional to force
C) Independent of force
D) Equal to mass

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8. A force of 50 N acts on a body of mass 10 kg. Find acceleration.

A) 2 m/s²
B) 3 m/s²
C) 5 m/s²
D) 10 m/s²

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9. A cricket player moves his hands backward while catching the ball to:

A) Increase force
B) Reduce force
C) Increase momentum
D) Increase speed

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10. A 4 kg body changes velocity from 2 m/s to 8 m/s in 2 s. Find force.

A) 6 N
B) 8 N
C) 12 N
D) 16 N

Answer Key

C) Mass and acceleration
B) 10 N
B) 4 N
B) 30 N
B) Law of Inertia
B) Passenger falls backward when bus starts suddenly
A) Directly proportional to force
C) 5 m/s²
B) Reduce force
C) 12 N

🕹️Test of 25 MCQs of Economics

Here is the Answer Key

1. b) Bombay to Thane
2. c) 1853
3. a) First
4. c) Air transport
5. b) Indian Airlines
6. c) 34
7. b) Second
8. a) First
9. c) Thermal power
10. c) Rural households
11. b) 1935
12. b) Kolkata
13. b) CD Deshmukh
14. c) 1949
15. c) Manmohan Singh
16. b) 1988
17. b) Mumbai
18. b) Punjab National Bank
19. c) 14
20. c) 6
21. b) Non-Banking Financial Corporation
22. c) 1986
23. c) 15 March – 21 March
24. c) Public Distribution System (PDS)
25. c) Wheat and rice

10 MCQs on Pressure, Gravity & Gravitational Constant

1. What is the SI unit of pressure?

A) Newton
B) Pascal
C) Joule
D) Watt

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2. Pressure is defined as:

A) Force × Area
B) Force ÷ Area
C) Area ÷ Force
D) Mass × Acceleration

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3. Which of the following increases pressure?

A) Increasing area
B) Decreasing force
C) Increasing force on same area
D) Reducing force and increasing area

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4. Why do sharp knives cut easily?

A) They have more weight
B) They apply less force
C) They exert more pressure due to smaller area
D) They reduce friction completely

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5. The force that pulls objects towards the Earth is called:

A) Magnetic force
B) Frictional force
C) Gravitational force
D) Muscular force

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6. The value of acceleration due to gravity on Earth is approximately:

A) 5.8 m/s²
B) 7.8 m/s²
C) 9.8 m/s²
D) 12.8 m/s²

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7. Gravity on the Moon is approximately how much compared to Earth?

A) One-half
B) One-third
C) One-sixth
D) Twice

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8. The universal gravitational constant is represented by:

A) g
B) G
C) F
D) M

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9. Which of the following statements about gravitational constant is correct?

A) It changes from planet to planet
B) It is different at different heights
C) It remains constant everywhere in the universe
D) It depends on the mass of objects

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10. According to the law of gravitation, gravitational force depends on:

A) Mass only
B) Distance only
C) Masses of objects and distance between them
D) Shape of the objects

🕹️10 MCQs on Five Year Plans (India)

1. The first Five-Year Plan in India was launched in:
A) 1947
B) 1950
C) 1951
D) 1956

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2. Which sector was given top priority in the First Five-Year Plan?
A) Industry
B) Agriculture
C) Banking
D) Transport

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3. The Second Five-Year Plan is mainly associated with:
A) Agriculture development
B) Mahalanobis Model
C) Green Revolution
D) Economic reforms

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4. Which Five-Year Plan is known for the slogan “Garibi Hatao”?
A) Third Five-Year Plan
B) Fourth Five-Year Plan
C) Fifth Five-Year Plan
D) Sixth Five-Year Plan

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5. During which Five-Year Plan did India face wars and drought, affecting economic growth?
A) First Plan
B) Second Plan
C) Third Plan
D) Fifth Plan

⸻

6. Which Five-Year Plan focused on growth with stability and modernization?
A) Fourth Five-Year Plan
B) Fifth Five-Year Plan
C) Sixth Five-Year Plan
D) Seventh Five-Year Plan

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7. The Planning Commission of India was replaced by:
A) Finance Commission
B) Election Commission
C) NITI Aayog
D) RBI

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8. Which Five-Year Plan period is associated with economic liberalization in India?
A) Seventh Plan
B) Eighth Plan
C) Ninth Plan
D) Tenth Plan

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9. How many Five-Year Plans were completed in India?
A) 10
B) 11
C) 12
D) 13

⸻

10. The Twelfth Five-Year Plan covered the period:
A) 2002–2007
B) 2007–2012
C) 2012–2017
D) 2015–2020

👍👍👍👍👍👍👍👍👍👍

*🕹️What is Stagflation🕹️*

*Stagflation is a situation in an economy where three problems happen at the same time:*
👇👇👇👇👇👇👇👇👇👇
1. *Slow economic growth (stagnation) → Economy grows very slowly or stops growing*

2. *High unemployment → Many people do not get jobs.*

3. *High inflation → Prices of goods and services keep increasing.*

Simple Definition:

*Stagflation = Stagnation + Inflation*

Example:

Suppose:

* *Prices of food, petrol, and daily goods increase rapidly*

📈* *Factories produce less goods 🏭*
* *Many people lose jobs or do not get employment ❌*

*ਸਟੈਗਫਲੇਸ਼ਨ ਕੀ ਹੈ* *ਸਟੈਗਫਲੇਸ਼ਨ ਇੱਕ ਅਰਥਵਿਵਸਥਾ ਵਿੱਚ ਇੱਕ ਅਜਿਹੀ ਸਥਿਤੀ ਹੈ ਜਿੱਥੇ ਇੱਕੋ ਸਮੇਂ ਤਿੰਨ ਸਮੱਸਿਆਵਾਂ ਹੁੰਦੀਆਂ ਹਨ:* 👇👇👇👇👇👇👇👇

1. *ਮੱਧਮ ਆਰਥਿਕ ਵਿਕਾਸ (ਸਟੈਗਨੇਸ਼ਨ) → ਅਰਥਵਿਵਸਥਾ ਬਹੁਤ ਹੌਲੀ ਹੌਲੀ ਵਧਦੀ ਹੈ ਜਾਂ ਵਧਣਾ ਬੰਦ ਕਰ ਦਿੰਦੀ ਹੈ*
2. *ਉੱਚ ਬੇਰੁਜ਼ਗਾਰੀ → ਬਹੁਤ ਸਾਰੇ ਲੋਕਾਂ ਨੂੰ ਨੌਕਰੀਆਂ ਨਹੀਂ ਮਿਲਦੀਆਂ।*
3. *ਉੱਚ ਮਹਿੰਗਾਈ → ਵਸਤੂਆਂ ਅਤੇ ਸੇਵਾਵਾਂ ਦੀਆਂ ਕੀਮਤਾਂ ਵਧਦੀਆਂ ਰਹਿੰਦੀਆਂ ਹਨ।*

ਸਧਾਰਨ ਪਰਿਭਾਸ਼ਾ: *ਸਟੈਗਫਲੇਸ਼ਨ = ਸਥਿਰਤਾ + ਮਹਿੰਗਾਈ* ਉਦਾਹਰਣ: ਮੰਨ ਲਓ: * *ਭੋਜਨ, ਪੈਟਰੋਲ ਅਤੇ ਰੋਜ਼ਾਨਾ ਦੀਆਂ ਵਸਤੂਆਂ ਦੀਆਂ ਕੀਮਤਾਂ ਤੇਜ਼ੀ ਨਾਲ ਵਧਦੀਆਂ ਹਨ* 📈* *ਕਾਰਖਾਨੇ ਘੱਟ ਵਸਤੂਆਂ ਪੈਦਾ ਕਰਦੇ ਹਨ 🏭* * *ਬਹੁਤ ਸਾਰੇ ਲੋਕ ਨੌਕਰੀਆਂ ਗੁਆ ਦਿੰਦੇ ਹਨ ਜਾਂ ਰੁਜ਼ਗਾਰ ਨਹੀਂ ਮਿਲਦਾ ❌*

🕹️10 MCQs on Archimedes’ Principle and Buoyant Force

1. Archimedes’ Principle states that:
A) Pressure increases with depth
B) Every object attracts another object
C) An immersed body experiences an upward force equal to the weight of displaced fluid
D) Force is equal to mass × acceleration

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2. The upward force exerted by a liquid on an immersed object is called:
A) Gravitational force
B) Frictional force
C) Buoyant force
D) Magnetic force

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3. The SI unit of buoyant force is:
A) Pascal
B) Newton
C) Joule
D) Watt

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4. A stone sinks in water because:
A) Its density is less than water
B) Buoyant force is greater than its weight
C) Its weight is greater than the buoyant force
D) Water has no pressure

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5. Which of the following will float in water?
A) Iron nail
B) Wooden block
C) Stone
D) Glass piece

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6. On which factor does buoyant force mainly depend?
A) Shape of object only
B) Colour of liquid
C) Density of liquid and volume displaced
D) Temperature only

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7. A ship made of iron floats because:
A) Iron is lighter than water
B) It displaces a large amount of water
C) Water has no weight
D) Air pushes it upward

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8. When an object is fully immersed in water, the buoyant force is equal to:
A) Weight of displaced liquid
B) Mass of object
C) Volume of object only
D) Density of object only

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9. Which instrument works on Archimedes’ Principle?
A) Thermometer
B) Hydrometer
C) Barometer
D) Ammeter

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10. If the density of an object is less than the density of water, it will:
A) Sink completely
B) Float on water
C) Remain suspended always
D) Break into pieces

🕹️Answer Key

C — An immersed body experiences an upward force equal to the weight of displaced fluid.
C — The upward force exerted by a liquid is called buoyant force.
B — The SI unit of buoyant force is Newton (N).
C — A stone sinks because its weight is greater than the buoyant force.
B — A wooden block floats in water.
C — Buoyant force depends on the density of liquid and volume of liquid displaced.
B — A ship floats because it displaces a large amount of water.
A — Buoyant force equals the weight of displaced liquid.
B — A hydrometer works on Archimedes’ Principle.
B — If the density of an object is less than water, it will float on water.

Answers – 10 MCQs on Five-Year Plans (India)

The first Five-Year Plan in India was launched in:
✅ C) 1951
Which sector was given top priority in the First Five-Year Plan?
✅ B) Agriculture
The Second Five-Year Plan is mainly associated with:
✅ B) Mahalanobis Model
Which Five-Year Plan is known for the slogan “Garibi Hatao”?
✅ C) Fifth Five-Year Plan
During which Five-Year Plan did India face wars and drought, affecting economic growth?
✅ C) Third Plan
Which Five-Year Plan focused on growth with stability and modernization?
✅ D) Seventh Five-Year Plan
The Planning Commission of India was replaced by:
✅ NITI Aayog (C)
Which Five-Year Plan period is associated with economic liberalization in India?
✅ B) Eighth Plan
How many Five-Year Plans were completed in India?
✅ C) 12
The Twelfth Five-Year Plan covered the period:
✅ C) 2012–2017

📌10 MCQs on Sources of Energy (Physics

1. Which of the following is a non-renewable source of energy?
A) Solar energy
B) Wind energy
C) Coal
D) Biomass

2. Which source of energy is used in solar cookers?
A) Wind energy
B) Solar energy
C) Geothermal energy
D) Tidal energy

3. Which of the following is considered a conventional source of energy?
A) Wind energy
B) Solar energy
C) Coal
D) Tidal energy

4. Biogas is mainly composed of:
A) Oxygen
B) Nitrogen
C) Methane
D) Carbon dioxide

5. Which source of energy causes minimum environmental pollution?
A) Coal
B) Diesel
C) Solar energy
D) Firewood

6. The energy obtained from flowing water is called:
A) Tidal energy
B) Hydroelectric energy
C) Nuclear energy
D) Geothermal energy

7. Which of the following is an example of biomass?
A) Cow dung
B) Petrol
C) LPG
D) Uranium

8. Nuclear energy is produced by the process of:
A) Combustion
B) Evaporation
C) Nuclear fission
D) Condensation

9. Which source of energy is obtained from the heat inside the Earth?
A) Wind energy
B) Geothermal energy
C) Solar energy
D) Hydroelectric energy

10. Why are fossil fuels not preferred as a long-term source of energy?
A) They are very cheap
B) They are renewable
C) They cause pollution and are exhaustible
D) They do not produce energy

✅ Answers: Sources of Energy MCQs

Which of the following is a non-renewable source of energy?
✔ C) Coal
Which source of energy is used in solar cookers?
✔ B) Solar energy
Which of the following is considered a conventional source of energy?
✔ C) Coal
Biogas is mainly composed of:
✔ C) Methane
Which source of energy causes minimum environmental pollution?
✔ C) Solar energy
The energy obtained from flowing water is called:
✔ B) Hydroelectric energy
Which of the following is an example of biomass?
✔ A) Cow dung
Nuclear energy is produced by the process of:
✔ C) Nuclear fission
Which source of energy is obtained from the heat inside the Earth?
✔ B) Geothermal energy
Why are fossil fuels not preferred as a long-term source of energy?
✔ C) They cause pollution and are exhaustible

📌10 MCQs of Physics Sound chapter

1. Which of the following is essential for the propagation of sound?

A) Vacuum
B) Medium
C) Light
D) Heat

2. The SI unit of frequency is:

A) Decibel
B) Hertz
C) Meter
D) Second

3. Which property of sound determines whether a sound is shrill or deep?

A) Loudness
B) Timbre
C) Pitch
D) Amplitude

4. The loudness of a sound mainly depends on its:

A) Frequency
B) Amplitude
C) Wavelength
D) Speed

5. Which of the following sounds has the highest pitch?

A) 100 Hz
B) 250 Hz
C) 500 Hz
D) 1000 Hz

6. An echo is heard when the reflected sound reaches the listener after at least:

A) 0.01 s
B) 0.05 s
C) 0.10 s
D) 0.50 s

7. The speed of sound is greatest in:

A) Gases
B) Liquids
C) Solids
D) Vacuum

8. Which characteristic enables us to distinguish between the voices of two different singers even if they sing the same note at the same loudness?

A) Pitch
B) Frequency
C) Timbre (Quality)
D) Amplitude

9. The relationship between wave speed (v), frequency (f), and wavelength (λ) is:

A) v = f\λ
B) v = fλ
C) v = λ/f
D) v = f + λ

10. Human beings can normally hear sounds in the frequency range:

A) 2 Hz – 200 Hz
B) 20 Hz – 20,000 Hz
C) 200 Hz – 200,000 Hz
D) 2,000 Hz – 20,000 Hz

Answer Key – Physics: Sound (10 MCQs)

B) Medium
B) Hertz
C) Pitch
B) Amplitude
D) 1000 Hz
C) 0.10 s
C) Solids
C) Timbre (Quality)
B) v = f\lambda
B) 20 Hz – 20,000 Hz