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RRB Group D 2025-26 13 August 2026 Shift 3 GK Questions – with answers & solutions

All 45 GK / GS questions asked in RRB Group D 2025-26 on 13 August 2026 Shift 3, with correct answers and short solutions, subject-wise: Current Affairs, Biology, Economics, Chemistry, Physics, Geography.

📚 45 questions🗓️ 13 August 2026⏰ Shift 3
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Subjects: Current Affairs (18) · Biology (8) · Economics (1) · Chemistry (7) · Physics (10) · Geography (1)

Current Affairs (18)

Awards and Honours - Current · National awards - current

Q1. In 2026, the state of Andhra Pradesh specially compiled the works of a legendary Carnatic composer who was posthumously awarded the Padma Shri. Which individual’s spiritual and classical compositions were honored in this manner?

  1. (a) Dr. Mandolin U. Srinivas
  2. (b) Ms. Sudha Raghunathan
  3. (c) Shri Garimella Balakrishna Prasad
  4. (d) Pt. Ajay Pohankar
Answer & solution

Answer: (c) Shri Garimella Balakrishna Prasad

Answer: Option 3 – Shri Garimella Balakrishna Prasad.
• Andhra Pradesh compiled the compositions of Carnatic composerGarimella Balakrishna Prasad(posthumous Padma Shri).

Q2. The Viksit Bharat – Guarantee for Rozgar and Ajeevika Mission (Gramin) (VB-G RAM G) Act introduced in December 2025 included:

  1. (a) Limiting participation to agricultural labourers only
  2. (b) Complete privatisation of rural employment delivery
  3. (c) Replacement of DBT with food-grain transfers
  4. (d) Increasing guaranteed workdays from 100 to 125
Answer & solution

Answer: (d) Increasing guaranteed workdays from 100 to 125

Answer: Option 4 – Increasing guaranteed workdays from 100 to 125.
• The VB-G RAM G Act (Dec 2025) raised guaranteed rural workdays from100 to 125.
Defence and Security - Current · Military exercises - current

Q3. Vajra Prahar conducted from February 24 to March 16, 2026, at the Special Forces Training School, Bakloh, Himachal Pradesh, was organised as a bilateral Special Forces military drill between India and which country?

  1. (a) France
  2. (b) Australia
  3. (c) United States
  4. (d) Russia
Answer & solution

Answer: (c) United States

Answer: Option 3 – United States.
• Exercise Vajra Prahar is a bilateral Special Forces drill between India and theUnited States.
Appointments and Resignations · National appointments

Q4. Who had assumed charge as the Deputy Governor of the Reserve Bank of India (RBI) in May 2026 for a tenure of three years following the retirement of T. Rabi Sankar?

  1. (a) Rajesh Kumar
  2. (b) Rohit Jain
  3. (c) Rohit Sharma
  4. (d) Rakesh Sinha
Answer & solution

Answer: (b) Rohit Jain

Answer: Option 2 – Rohit Jain.
•Rohit Jaintook charge as RBI Deputy Governor (May 2026), succeeding T. Rabi Sankar.
National Affairs and Government Initiatives · National events and launches

Q5. Which institution launched the Central Prabhari Officer (CPO) Portal in May 2026 to strengthen real-time governance, stakeholder coordination, and last-mile delivery under the Aspirational Districts and Blocks Programme?

  1. (a) NITI Aayog
  2. (b) National Informatics Centre
  3. (c) National Human Rights Commission
  4. (d) Department of Administrative Reforms and Public Grievances
Answer & solution

Answer: (a) NITI Aayog

Answer: Option 1 – NITI Aayog.
•NITI Aayoglaunched the Central Prabhari Officer (CPO) Portal (May 2026).
Defence and Security - Current · Defence acquisitions and indigenous systems

Q6. In December 2025, which organisation successfully tested a high-speed indigenous fighter jet escape system?

  1. (a) Indian Space Research Organisation (ISRO)
  2. (b) Hindustan Aeronautics Limited (HAL)
  3. (c) Bharat Heavy Electricals Limited (BHEL)
  4. (d) Defence Research and Development Organisation (DRDO)
Answer & solution

Answer: (d) Defence Research and Development Organisation (DRDO)

Answer: Option 4 – DRDO.
•DRDOtested a high-speed indigenous fighter-jet escape (ejection) system (Dec 2025).
Books, Obituaries and Days - Current · Days and themes - current year

Q7. What was the official theme of Earth Day 2026, an environmental awareness movement that was born on 22 April 1970 and initiated by U.S. Senator Gaylord Nelson?

  1. (a) Invest in Our Planet
  2. (b) Restore Our Earth
  3. (c) Planet vs. Plastics
  4. (d) Our Power, Our Planet
Answer & solution

Answer: (d) Our Power, Our Planet

Answer: Option 4 – Our Power, Our Planet.
• The theme of Earth Day 2026 was'Our Power, Our Planet'.
Sports - Current · Tournaments and winners

Q8. Which player won the 2026 Australian Open women's singles title, claiming her second Grand Slam—her first being Wimbledon 2022?

  1. (a) Aryna Sabalenka
  2. (b) Jessica Pegula
  3. (c) Iga Świątek
  4. (d) Elena Rybakina
Answer & solution

Answer: (d) Elena Rybakina

Answer: Option 4 – Elena Rybakina.
•Elena Rybakinawon the 2026 Australian Open women's singles (2nd Slam after Wimbledon 2022).
Sports - Current · Venues and hosts

Q9. The 2026 World Athletics Indoor Championships (20–22 March 2026), where Armand "Mondo" Duplantis won his fourth consecutive indoor pole vault title, was held at the Kujawsko-Pomorska Arena in which city?

  1. (a) Kraków, Poland
  2. (b) Warsaw, Poland
  3. (c) Gdańsk, Poland
  4. (d) Toruń, Poland
Answer & solution

Answer: (d) Toruń, Poland

Answer: Option 4 – Toruń, Poland.
• The 2026 World Athletics Indoor Championships were held at the Kujawsko-Pomorska Arena inToruń, Poland.

Q10. In April 2026, which organization launched the strategic roadmap “DPI@2047 for Viksit Bharat”?

  1. (a) Ministry of Electronics and Information Technology
  2. (b) Telecom Regulatory Authority of India
  3. (c) National Institution for Transforming India
  4. (d) Securities and Exchange Board of India Organization
Answer & solution

Answer: (c) National Institution for Transforming India

Answer: Option 3 – National Institution for Transforming India (NITI Aayog).
•NITI Aayoglaunched the 'DPI@2047 for Viksit Bharat' roadmap (April 2026).
Sports - Current · Venues and hosts

Q11. The “Khelo India Tribal Games 2026”, which focused on promoting indigenous and traditional Indian sports, was held in which Indian state?

  1. (a) Odisha
  2. (b) Jharkhand
  3. (c) Madhya Pradesh
  4. (d) Chhattisgarh
Answer & solution

Answer: (d) Chhattisgarh

Answer: Option 4 – Chhattisgarh.
• The Khelo India Tribal Games 2026 were held inChhattisgarh.
Awards and Honours - Current · National awards - current

Q12. The State Disaster Management Authority selected in the Institutional Category for the Subhash Chandra Bose Aapda Prabandhan Puraskar 2026 had belonged to which state?

  1. (a) Assam
  2. (b) Himachal Pradesh
  3. (c) Uttarakhand
  4. (d) Sikkim
Answer & solution

Answer: (d) Sikkim

Answer: Option 4 – Sikkim.
• TheSikkimSDMA won the institutional-category Subhash Chandra Bose Aapda Prabandhan Puraskar 2026.
State News · State elections and results

Q13. Following the 2026 West Bengal Legislative Assembly Elections, who was sworn in as the first BJP Chief Minister of West Bengal on May 9, 2026?

  1. (a) Agnimitra Paul
  2. (b) Dilip Ghosh
  3. (c) Suvendu Adhikari
  4. (d) Locket Chatterjee
Answer & solution

Answer: (c) Suvendu Adhikari

Answer: Option 3 – Suvendu Adhikari.
•Suvendu Adhikariwas sworn in as West Bengal's first BJP Chief Minister (9 May 2026).
Science, Technology and Space - Current · Technology launches and AI

Q14. In 2026, India achieved a major milestone under the National Quantum Mission. What was this landmark achievement?

  1. (a) Completing 1,000 kms of secure quantum communication.
  2. (b) Developing a quantum internet for the Mumbai financial district.
  3. (c) Launching the world's first quantum computing satellite.
  4. (d) Achieving quantum supremacy in computational speed.
Answer & solution

Answer: (a) Completing 1,000 kms of secure quantum communication.

Answer: Option 1 – Completing 1,000 km of secure quantum communication.
• Under the National Quantum Mission, India achieved1,000 km of secure quantum communication(2026).

Q15. In March 2026, the Publications Division of the Ministry of Information and Broadcasting released which latest annual reference publication in both English and Hindi?

  1. (a) India 2047: A Development Report
  2. (b) Governance in India: Annual Review
  3. (c) New India: Policy and Progress
  4. (d) Bharat 2026: A Reference Annual
Answer & solution

Answer: (d) Bharat 2026: A Reference Annual

Answer: Option 4 – Bharat 2026: A Reference Annual.
• The Publications Division released'Bharat 2026: A Reference Annual'(March 2026).
State News · State schemes and events

Q16. In January 2026, which rural development scheme was launched by the Gujarat government to provide urban-like facilities in villages?

  1. (a) Mukhyamantri Gramvikas Yojana
  2. (b) Mukhyamantri Shaheri Vikas Yojana
  3. (c) Mukhyamantri Gramotthan Yojana
  4. (d) Mukhyamantri Gramkalyan Yojana
Answer & solution

Answer: (c) Mukhyamantri Gramotthan Yojana

Answer: Option 3 – Mukhyamantri Gramotthan Yojana.
• Gujarat launched theMukhyamantri Gramotthan Yojana(Jan 2026) for urban-like village facilities.
Sports - Current · Records and achievements

Q17. Which player was conferred the title of India’s 94th Chess Grandmaster in March 2026?

  1. (a) Mayank Chakraborty
  2. (b) D Gukesh
  3. (c) R Praggnanandhaa
  4. (d) Arjun Erigaisi
Answer & solution

Answer: (a) Mayank Chakraborty

Answer: Option 1 – Mayank Chakraborty.
•Mayank Chakrabortybecame India's 94th chess Grandmaster (March 2026).
Reports, Indices and Rankings · Reports and their publishers

Q18. The 21st Edition of the Global Risks Report 2026 was released by which of the following organizations?

  1. (a) World Bank
  2. (b) United Nations Development Programme
  3. (c) International Monetary Fund
  4. (d) World Economic Forum
Answer & solution

Answer: (d) World Economic Forum

Answer: Option 4 – World Economic Forum.
• The 21st Global Risks Report 2026 was released by theWorld Economic Forum.

Biology (8)

Ecology and Environment · Waste management and biodegradable substances

Q19. In 2026, the Government of India notified amendments to the Plastic Waste Management Rules, making it mandatory for producers and brand owners to use what type of material in plastic packaging to promote circular economy practices?

  1. (a) Recycled plastic content
  2. (b) Bamboo-based polymer substitutes
  3. (c) Biodegradable metallic coatings
  4. (d) Imported compostable packaging material
Answer & solution

Answer: (a) Recycled plastic content

Answer: Option 1 – Recycled plastic content.
• The amended Plastic Waste Management Rules mandaterecycled plastic contentin packaging.
Ecology and Environment · Ecosystem and its components

Q20. In an ecosystem, the organisms that recycle nutrients by breaking down dead matter are called:

  1. (a) Decomposers
  2. (b) Consumers
  3. (c) Producers
  4. (d) Herbivores
Answer & solution

Answer: (a) Decomposers

Answer: Option 1 – Decomposers.
•Decomposersbreak down dead matter and recycle nutrients.
Tissues · Muscular tissue

Q21. Muscular tissue is responsible for all movement in our body and consists of elongated cells which are also commonly referred to as __________.

  1. (a) Neurons
  2. (b) Muscle fibres
  3. (c) Epithelial cells
  4. (d) Cartilage cells
Answer & solution

Answer: (b) Muscle fibres

Answer: Option 2 – Muscle fibres.
• Elongated muscle cells are calledmuscle fibres.
Diversity and Classification of Living Organisms · Basis and hierarchy of classification

Q22. A taxonomist examines DNA sequences of two bacteria and finds high similarity. Based on current classification principles, which relationship does this suggest between them?

  1. (a) They are unrelated
  2. (b) They occupy same ecological niche
  3. (c) They belong to different domains
  4. (d) They likely share a common ancestry
Answer & solution

Answer: (d) They likely share a common ancestry

Answer: Option 4 – They likely share a common ancestry.
• High DNA similarity indicates acommon ancestor(close evolutionary relationship).
Tissues · Meristematic tissues

Q23. Which of the following best describes the role of apical meristems?

  1. (a) Drive lengthwise growth at the tips of roots and shoots.
  2. (b) Store nutrients in parenchyma
  3. (c) Form only in mature tissues after the plant has fully grown.
  4. (d) Increase the diameter of stems and roots.
Answer & solution

Answer: (a) Drive lengthwise growth at the tips of roots and shoots.

Answer: Option 1 – Drive lengthwise growth at the tips of roots and shoots.
•Apical meristemscause increase in length (primary growth) at root/shoot tips.
Ecology and Environment · Pollution - effects on living beings

Q24. Increase in concentration of harmful chemicals progressively through the trophic levels is called _____.

  1. (a) Biomagnification
  2. (b) Decomposition
  3. (c) Recycling
  4. (d) Pollution
Answer & solution

Answer: (a) Biomagnification

Answer: Option 1 – Biomagnification.
• Progressive increase of harmful chemicals up trophic levels isbiomagnification.
Nutrition and Digestion · Nutrition in animals (amoeba, ruminants)

Q25. How does Paramecium ensure that food particles are directed to its intake spot?

  1. (a) Utilises contractile vacuoles for food transport
  2. (b) Releases enzymes to move food particles
  3. (c) Forms pseudopodia to engulf food
  4. (d) Uses movement of cilia covering the cell surface
Answer & solution

Answer: (d) Uses movement of cilia covering the cell surface

Answer: Option 4 – Uses movement of cilia covering the cell surface.
•Parameciumsweeps food to its oral groove usingcilia.

Q26. Which product is commonly formed during anaerobic respiration in animals?

  1. (a) Glucose
  2. (b) Alcohol
  3. (c) Lactic acid
  4. (d) Oxygen
Answer & solution

Answer: (c) Lactic acid

Answer: Option 3 – Lactic acid.
• Anaerobic respiration in animal muscles produceslactic acid.

Economics (1)

Government Schemes and Economic Reports · Social welfare schemes

Q27. Which national campaign is being strengthened in 2026 to address the problem of drug abuse among the youth in India?

  1. (a) Fit India Movement
  2. (b) Startup India Scheme
  3. (c) Nasha Mukt Bharat Abhiyan
  4. (d) Digital India Programme
Answer & solution

Answer: (c) Nasha Mukt Bharat Abhiyan

Answer: Option 3 – Nasha Mukt Bharat Abhiyan.
• TheNasha Mukt Bharat Abhiyanis being strengthened (2026) to tackle youth drug abuse.

Chemistry (7)

Carbon and its Compounds · Ethanol and ethanoic acid

Q28. Which of the following statements about ethanol is CORRECT?

  1. (a) Ethanol is a colorless, odourless liquid that does not evaporate easily.
  2. (b) Ethanol burns with a clear blue flame, producing carbon dioxide and water.
  3. (c) Ethanol reacts with baking soda to release hydrogen gas.
  4. (d) Ethanol does not mix with water at all.
Answer & solution

Answer: (b) Ethanol burns with a clear blue flame, producing carbon dioxide and water.

Answer: Option 2 – Ethanol burns with a clear blue flame, producing carbon dioxide and water.
• Ethanol is a volatile, sweet-smelling liquid that is miscible with water and burns with ablue flamegiving CO₂ and H₂O.
Metals and Non-metals · Occurrence of metals - ores and minerals

Q29. Why are few metals NOT found in their native state of nature?

  1. (a) Because they have low melting points.
  2. (b) Because they have high reactivity.
  3. (c) Because they are high density.
  4. (d) Because they are soluble in nature.
Answer & solution

Answer: (b) Because they have high reactivity.

Answer: Option 2 – Because they have high reactivity.
• Highly reactive metals combine readily with other elements, so they arenot found free (native)in nature.
Structure of Atom · Atomic number and mass number

Q30. The mass number of an atom represents the total count of which particles present within its nucleus?

  1. (a) protons and electrons
  2. (b) electrons and neutrons
  3. (c) protons and neutrons
  4. (d) protons only
Answer & solution

Answer: (c) protons and neutrons

Answer: Option 3 – Protons and neutrons.
• Mass number = number ofprotons + neutrons(nucleons).
Atoms, Molecules and Mole Concept · Valency and chemical formulae

Q31. What is the valency of oxygen in MgO?

  1. (a) Two
  2. (b) Three
  3. (c) Four
  4. (d) One
Answer & solution

Answer: (a) Two

Answer: Option 1 – Two.
• In MgO, oxygen has valency2(O²⁻).
Acids, Bases and Salts · Neutralisation reaction

Q32. Read the following statements carefully and choose the CORRECT option:S̲t̲a̲t̲e̲m̲e̲n̲t̲ ̲I̲:̲ Neutralisation reactions always produce salt, water, and hydrogen gas.S̲t̲a̲t̲e̲m̲e̲n̲t̲ ̲I̲I̲:̲ Neutralisation reaction is a type of double displacement reaction.

  1. (a) Only Statement II is correct
  2. (b) Only Statement I is correct
  3. (c) Both statements are correct
  4. (d) Both statements are incorrect
Answer & solution

Answer: (a) Only Statement II is correct

Answer: Option 1 – Only Statement II is correct.
• Neutralisation gives salt + water (not hydrogen gas), so Statement I is wrong; it is adouble displacementreaction (Statement II correct).
Chemical Reactions and Equations · Double displacement and precipitation reactions

Q33. A chemist mixes two colorless aqueous solutions X and Y. A white precipitate Z forms instantly. Later, analysis shows Z is insoluble calcium carbonate.Which pair of solutions was most likely used?

  1. (a) HCl and NaOH
  2. (b) Na₂CO₃ and CaCl₂
  3. (c) ZnSO₄ and FeCl₂
  4. (d) NaCl and KNO₃
Answer & solution

Answer: (b) Na₂CO₃ and CaCl₂

Answer: Option 2 – Na₂CO₃ and CaCl₂.
• Na₂CO₃ + CaCl₂ → CaCO₃↓ (white precipitate) + 2NaCl.
Mixtures, Solutions and Separation · Homogeneous and heterogeneous mixtures

Q34. Which of the following is NOT a heterogeneous mixture?

  1. (a) Lemonade (with pulp)
  2. (b) Alcohol and water
  3. (c) Soil
  4. (d) Iron filings and sulphur
Answer & solution

Answer: (b) Alcohol and water

Answer: Option 2 – Alcohol and water.
•Alcohol and watermix uniformly (homogeneous). The others are heterogeneous.

Physics (10)

Magnetism and Magnetic Effects of Current · Magnetic field due to current (Oersted, right-hand thumb rule)

Q35. Why are magnetic field lines due to current in a straight conductor denser near the wire and farther apart as distance increases?

  1. (a) Because the magnetic field becomes uniform farther away
  2. (b) Because the current in the wire decreases with distance
  3. (c) Because of interference from external magnets only
  4. (d) Because magnetic field strength decreases with increasing distance from the wire
Answer & solution

Answer: (d) Because magnetic field strength decreases with increasing distance from the wire

Answer: Option 4 – Because magnetic field strength decreases with increasing distance from the wire.
• Field B ∝ 1/r, so lines aredenser near the wireand spread out farther away.
Magnetism and Magnetic Effects of Current · Magnetic field due to current (Oersted, right-hand thumb rule)

Q36. A student wants to use the Right Hand Thumb Rule to determine the direction of the magnetic field around a current-carrying straight conductor. Which of the following steps is essential in applying the rule correctly?

  1. (a) Point the thumb in the direction of current
  2. (b) Use the left hand for orientation
  3. (c) Wrap fingers in the direction of the conductor
  4. (d) Align the thumb with the magnetic field
Answer & solution

Answer: (a) Point the thumb in the direction of current

Answer: Option 1 – Point the thumb in the direction of current.
• In the right-hand thumb rule, thethumb points along the currentand the curled fingers show the field direction.
Light - Refraction and Lenses · Refractive index and optical density

Q37. If the refractive index of medium 2 with respect to medium 1 is n₂₁, which formula correctly represents n₂₁?

  1. (a) n₂₁ = Speed of light in medium 2 minus speed of light in medium 1.
  2. (b) n₂₁ = Speed of light in medium 1 minus speed of light in medium 2.
  3. (c) n₂₁ = Speed of light in medium 2 divided by speed of light in medium 1.
  4. (d) n₂₁ = Speed of light in medium 1 divided by speed of light in medium 2.
Answer & solution

Answer: (d) n₂₁ = Speed of light in medium 1 divided by speed of light in medium 2.

Answer: Option 4 – Speed of light in medium 1 divided by speed of light in medium 2.
• n₂₁ = v₁/v₂ (speed in medium 1 ÷ speed in medium 2).
Light - Refraction and Lenses · Numericals on refraction and lenses

Q38. A convex lens forms a real, inverted image of an object placed at a distance of 30 cm from the lens. The image is found to be formed at a distance of 60 cm on the other side of the lens. What is the focal length of the lens?

  1. (a) 18 cm
  2. (b) 20 cm
  3. (c) 12 cm
  4. (d) 15 cm
Answer & solution

Answer: (b) 20 cm

Answer: Option 2 – 20 cm.
• 1/f = 1/v − 1/u = 1/60 − 1/(−30) = 1/60 + 1/30 = 3/60 ⇒ f =20 cm.
Force and Laws of Motion · Newton's third law and its applications

Q39. During the firing of a gun, the bullet moves forward while the gun recoils backward. Which option correctly identifies the action and the corresponding reaction in this situation?

  1. (a) The gun exerts a forward force on the bullet; the bullet exerts an equal backward force on the gun.
  2. (b) The bullet pushes the gun forward, and the gun pushes the bullet backward.
  3. (c) The gun and bullet both move because the trigger is pulled, not because of action-reaction forces.
  4. (d) The bullet moves forward due to gunpowder only, and the gun moves backward due to its own weight.
Answer & solution

Answer: (a) The gun exerts a forward force on the bullet; the bullet exerts an equal backward force on the gun.

Answer: Option 1 – The gun exerts a forward force on the bullet; the bullet exerts an equal backward force on the gun.
• By Newton's third law, action (gun→bullet forward) and reaction (bullet→gun backward) are equal and opposite (recoil).
Motion · Motion graphs (distance-time, velocity-time)

Q40. Which feature of a velocity-time graph for uniform acceleration determines the value of acceleration?

  1. (a) The slope of the velocity-time graph
  2. (b) The maximum value on the velocity axis
  3. (c) The area under the velocity-time graph
  4. (d) The intercept on the velocity axis
Answer & solution

Answer: (a) The slope of the velocity-time graph

Answer: Option 1 – The slope of the velocity-time graph.
• On a velocity–time graph,slope = acceleration.
Work, Energy and Power · Power and its units (watt, horsepower)

Q41. A worker performs a task. Which of the following statements about power are correct?1. If work remains constant and time increases, power decreases.2. If time remains constant and work increases, power increases.3. Power is directly proportional to work done.4. Power is inversely proportional to time taken.

  1. (a) 1, 2, 3 and 4
  2. (b) 1, 3 and 4 only
  3. (c) 2 and 4 only
  4. (d) 1, 2 and 3 only
Answer & solution

Answer: (a) 1, 2, 3 and 4

Answer: Option 1 – 1, 2, 3 and 4.
• Power = Work/Time, so P ∝ work, P ∝ 1/time. All four statements are correct.
Light - Refraction and Lenses · Numericals on refraction and lenses

Q42. A 3 cm tall object is placed 9 cm in front of a concave lens with focal length 6 cm. What is the approximate height of the image formed?

  1. (a) 4 cm and upright
  2. (b) 3 cm and inverted
  3. (c) 1.2 cm and upright
  4. (d) 1 cm and inverted
Answer & solution

Answer: (c) 1.2 cm and upright

Answer: Option 3 – 1.2 cm and upright.
• Concave lens: u = −9, f = −6 ⇒ 1/v = 1/(−6) + 1/(−9)... using 1/v − 1/u = 1/f ⇒ v = −3.6 cm.
• Magnification m = v/u = (−3.6)/(−9) = 0.4 ⇒ image height = 0.4×3 =1.2 cm, upright(virtual).
Sources of Energy · Conventional sources and fossil fuels

Q43. Imagine a region with abundant ancient plant remains, frequent earthquakes, and thick rock layers. Which fossil fuel is most likely to be found there and why?

  1. (a) No fossil fuels, because biomass cannot decay underground
  2. (b) Coal, because these conditions favor coal formation from ancient plants
  3. (c) Oil, because these conditions favor oil formation from sea animals
  4. (d) Natural gas, because these conditions favor gas formation from volcanic activity
Answer & solution

Answer: (b) Coal, because these conditions favor coal formation from ancient plants

Answer: Option 2 – Coal, because these conditions favour coal formation from ancient plants.
• Ancient plant remains buried under heat and pressure formcoal.
Work, Energy and Power · Simple machines and levers

Q44. Which of the following is NOT true about simple machines?

  1. (a) They reduce total work done in all cases
  2. (b) They make tasks more convenient
  3. (c) They can reduce the effort required
  4. (d) They can change the direction of force
Answer & solution

Answer: (a) They reduce total work done in all cases

Answer: Option 1 – They reduce total work done in all cases.
• Machines do NOT reduce total work (output work ≤ input work); they only make tasks convenient. So this statement is NOT true.

Geography (1)

Atmosphere and Climate · Planetary, seasonal and local winds

Q45. A weather report for a Himalayan town mentions wind direction reversal every evening, affecting local farming. Which atmospheric phenomenon is primarily responsible for this reversal?

  1. (a) Movement of global wind belts
  2. (b) Onset of monsoon winds
  3. (c) Constant high-pressure wind flow
  4. (d) Daily cycle of valley and mountain breezes
Answer & solution

Answer: (d) Daily cycle of valley and mountain breezes

Answer: Option 4 – Daily cycle of valley and mountain breezes.
• Evening wind reversal in hilly areas is due to thevalley and mountain breezecycle.
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