RRB Group D — Set 7

Q: What is the mathematical expression for Ohm's Law?

V = I × R. Ohm's Law states that V = I × R, where V is voltage (in volts), I is current (in amperes), and R is resistance (in ohms). This fundamental law was formulated by German physicist Georg Simon Ohm in 1827. According to V = I × R, voltage across a conductor is directly proportional to the current flowing through it at constant temperature. Ohm's Law is the foundation of basic electrical circuit analysis.

Q: The deficiency of which vitamin causes the disease Scurvy?

Vitamin C. Scurvy occurs due to a lack of Vitamin C in the daily diet. Citrus fruits like lemons and oranges are rich sources of this nutrient. Vitamin C is also essential for the repair of body tissues.

Q: In which year did the Battle of Plassey take place?

1757. The Battle of Plassey was fought in 1757 between the British and the Nawab of Bengal. It established the foundation of British rule in India. Robert Clive led the British forces to victory in this conflict.

Q: Which article of the Indian Constitution relates to the abolition of untouchability?

Article 17. Article 17 prohibits the practice of untouchability in any form. It is a fundamental right aimed at ensuring social equality. The enforcement of any disability arising out of untouchability is a punishable offense.

Q: What is the chemical name of Baking Soda?

Sodium Bicarbonate. Sodium Bicarbonate is commonly known as baking soda in households. Its chemical formula is represented as NaHCO3. It is often used as a leavening agent in baking food items.

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What is the mathematical expression for Ohm's Law?

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Correct Answer: C. V = I × R

Ohm's Law states that V = I × R, where V is voltage (in volts), I is current (in amperes), and R is resistance (in ohms). This fundamental law was formulated by German physicist Georg Simon Ohm in 1827. According to V = I × R, voltage across a conductor is directly proportional to the current flowing through it at constant temperature. Ohm's Law is the foundation of basic electrical circuit analysis.

The deficiency of which vitamin causes the disease Scurvy?

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Correct Answer: A. Vitamin C

Scurvy occurs due to a lack of Vitamin C in the daily diet. Citrus fruits like lemons and oranges are rich sources of this nutrient. Vitamin C is also essential for the repair of body tissues.

In which year did the Battle of Plassey take place?

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Correct Answer: B. 1757

The Battle of Plassey was fought in 1757 between the British and the Nawab of Bengal. It established the foundation of British rule in India. Robert Clive led the British forces to victory in this conflict.

Which article of the Indian Constitution relates to the abolition of untouchability?

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Correct Answer: D. Article 17

Article 17 prohibits the practice of untouchability in any form. It is a fundamental right aimed at ensuring social equality. The enforcement of any disability arising out of untouchability is a punishable offense.

What is the chemical name of Baking Soda?

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Correct Answer: C. Sodium Bicarbonate

Sodium Bicarbonate is commonly known as baking soda in households. Its chemical formula is represented as NaHCO3. It is often used as a leavening agent in baking food items.

In which Indian state is the Kanchenjunga peak located?

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Correct Answer: B. Sikkim

Kanchenjunga is the highest mountain peak located within India. It is situated on the border between Sikkim and Nepal. It is the third highest mountain in the entire world.

Kaziranga National Park is famous for which animal?

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Correct Answer: A. One-horned Rhinoceros

Kaziranga National Park is home to the world's largest population of one-horned rhinos. It is located in the state of Assam along the Brahmaputra River. The park is recognized as a UNESCO World Heritage Site.

Which cell organelle is known as the 'Powerhouse of the Cell'?

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Correct Answer: D. Mitochondria

Mitochondria are responsible for generating most of the cell's supply of energy. This energy is stored in the form of molecules called ATP. Cells that require more energy usually contain a higher number of mitochondria.

Mahatma Gandhi started the Dandi March to protest against the tax on which commodity?

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Correct Answer: B. Salt

The Dandi March was an act of nonviolent civil disobedience against the British salt monopoly. It began from Sabarmati Ashram and ended at the coastal village of Dandi. This movement sparked the nationwide Civil Disobedience Movement in 1930.

What is the minimum age required to become the President of India?

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Correct Answer: C. 35 years

A person must be at least 35 years old to be eligible for the office of President. This qualification is mentioned under Article 58 of the Indian Constitution. The candidate must also be a citizen of India.

What is the approximate speed of light in a vacuum?

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Correct Answer: A. 3 × 10⁸ m/s

Light travels at a speed of approximately 300,000 kilometers per second in a vacuum. It is considered the universal speed limit for energy and information. Nothing in the universe can travel faster than this speed.

The atomic number of an element is determined by the number of which particles?

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Correct Answer: D. Protons

The atomic number is the number of protons found in the nucleus of an atom. Each element has a unique atomic number that defines its identity. In a neutral atom, the number of protons equals the number of electrons.

In which year was the Bharat Ratna award instituted?

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Correct Answer: B. 1954

The Bharat Ratna is India's highest civilian award instituted in 1954. It is awarded for exceptional service in fields like art, literature, and science. The first recipients included C. Rajagopalachari and Dr. S. Radhakrishnan.

Which blood group is known as the Universal Donor?

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Correct Answer: D. O negative

O negative blood does not have A, B, or Rh antigens on the red cells. This makes it compatible with almost any other blood type during emergencies. People with this blood group are rare and highly valued as donors.

Which is the largest ocean in the world?

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Correct Answer: C. Pacific Ocean

The Pacific Ocean covers more than 30% of the Earth's total surface area. It is larger than the total land area of all the continents combined. The deepest point on Earth, the Mariana Trench, is located here.

The Harappan site of Harappa was located on the banks of which river?

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Correct Answer: A. Ravi

Harappa was one of the major cities of the Indus Valley Civilization located in present-day Pakistan. It was situated on the banks of the Ravi River. The site was first excavated by Daya Ram Sahni in 1921.

Which part of the Indian Constitution contains the Fundamental Duties?

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Correct Answer: B. Part IV-A

Fundamental Duties were added to the Constitution by the 42nd Amendment Act in 1976. They are listed under Article 51A within Part IV-A. There are currently eleven fundamental duties for Indian citizens.

What is the pH value of pure water at room temperature?

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Correct Answer: C. 7

Pure water has a pH value of 7, which makes it chemically neutral. The pH scale ranges from 0 to 14, with values below 7 indicating acidity and above 7 indicating alkalinity. A pH of 7 means equal concentrations of hydrogen (H⁺) and hydroxide (OH⁻) ions. Pure water's neutral pH of 7 makes it an important reference point on the pH scale.

Newton's First Law of Motion is also known as the Law of ______.?

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Correct Answer: D. Inertia

The Law of Inertia states that an object will remain at rest unless acted upon by a force. Inertia is the tendency of objects to resist any change in their state of motion. Mass is the quantitative measure of an object's inertia.

Kuchipudi is a classical dance form originating from which state?

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Correct Answer: A. Andhra Pradesh

Kuchipudi is named after a village in the Krishna district of Andhra Pradesh. It combines speech, mime, and pure dance elements in its performance. Traditionally, this dance was performed only by male brahmins.

How many bones are there in an adult human body?

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Correct Answer: B. 206

An adult human skeleton consists of 206 distinct bones. Infants are born with more bones that eventually fuse together as they grow. The femur is the longest and strongest bone in the human body.

Which is the longest river flowing through India?

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Correct Answer: A. Ganga

The Ganga is the longest river in India with a length of about 2525 kilometers. it originates from the Gangotri Glacier in the Himalayas. It is worshipped as a sacred river by millions of people.

In which year did the First Battle of Panipat take place?

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Correct Answer: C. 1526

The First Battle of Panipat was fought in 1526 between Babur, the founder of the Mughal Empire, and Ibrahim Lodi, the Sultan of Delhi. The battle took place on April 21, 1526, and marked the beginning of Mughal rule in India. Babur's victory at the First Battle of Panipat (1526) was made possible by his use of gunpowder and the 'Tulugma' tactics. This 1526 battle ended the Lodi dynasty and established Mughal dominance in northern India.

Who presides over the joint sitting of the two Houses of Parliament?

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Correct Answer: D. Speaker of Lok Sabha

The Speaker of the Lok Sabha presides over a joint sitting of Parliament. In the Speaker's absence, the Deputy Speaker of Lok Sabha takes the chair. A joint sitting is called by the President to resolve deadlocks on bills.

The process of rusting of iron is an example of which type of change?

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Correct Answer: B. Chemical change

Rusting is a chemical reaction where iron reacts with oxygen and moisture to form iron oxide. This process results in the formation of a new substance with different properties. It is an irreversible change that weakens the metal structure.

What is the SI unit of Work?

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Correct Answer: A. Joule

The Joule is defined as the work done when a force of one Newton moves an object by one meter. It is also the unit used for measuring energy in physics. James Prescott Joule is the scientist after whom this unit is named.

Where is the headquarters of the United Nations located?

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Correct Answer: C. New York City

The United Nations headquarters is situated in New York City on international territory. The land for the headquarters was donated by John D. Rockefeller Jr. It was established in 1945 to promote international cooperation.

Which organ in the human body secretes the hormone Insulin?

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Correct Answer: D. Pancreas

The pancreas produces insulin to regulate blood sugar levels in the body. Specifically, the beta cells in the Islets of Langerhans secrete this hormone. A lack of insulin production leads to a condition called diabetes.

Which crop is most suitable for cultivation in black soil?

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Correct Answer: B. Cotton

Black soil is also known as 'Regur' soil and is ideal for growing cotton. It has a high water-retaining capacity which is beneficial for the crop. This type of soil is widely found in the Deccan Trap region of India.

In which year was the Quit India Movement launched?

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Correct Answer: A. 1942

The Quit India Movement was launched in 1942 by Mahatma Gandhi at the All India Congress Committee session in Bombay on August 8, 1942. The movement demanded immediate end to British rule in India with the slogan 'Do or Die' (Karo ya Maro). The 1942 Quit India Movement led to the arrest of all major Congress leaders including Gandhi, Nehru, and Patel. Despite heavy repression, the 1942 movement shook British confidence in India.

The 'Right to Education' was added to the Constitution by which amendment?

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Correct Answer: C. 86th Amendment

The 86th Amendment Act of 2002 made education a fundamental right for children aged 6 to 14. This was inserted into the Constitution as Article 21A. It seeks to provide free and compulsory education to all children.

Which of the following is considered a noble gas?

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Correct Answer: D. Helium

Helium is a noble gas located in group 18 of the periodic table. Noble gases are chemically inert and rarely react with other elements. Other examples include Neon, Argon, Krypton, and Xenon.

Which type of mirror is used as a rear-view mirror in vehicles?

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Correct Answer: B. Convex mirror

Convex mirrors provide a wider field of view compared to other types of mirrors. They always form an upright and diminished image of distant objects. This helps drivers see a larger area of traffic behind them.

The historic site of Hampi is located in which present-day Indian state?

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Correct Answer: A. Karnataka

Hampi was the capital city of the Vijayanagara Empire in the 14th century. It is located on the banks of the Tungabhadra River in Karnataka. The site is famous for its magnificent ruins and stone temples.

Which gas is primarily taken in by plants during photosynthesis?

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Correct Answer: C. Carbon Dioxide

Plants use carbon dioxide from the atmosphere to produce glucose and energy. This process takes place in the presence of sunlight and chlorophyll. Oxygen is released as a byproduct during this vital process.

Which continent is passed through by the Equator, the Tropic of Cancer, and the Tropic of Capricorn?

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Correct Answer: D. Africa

Africa is the only continent through which all three major latitude lines pass. The Equator divides the continent into two almost equal halves. This results in diverse climatic zones across the African landmass.

The period of which dynasty is often called the 'Golden Age' of ancient India?

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Correct Answer: B. Gupta Dynasty

The Gupta period saw great achievements in the fields of science, art, and literature. Famous scholars like Kalidasa and Aryabhata lived during this prosperous era. The empire was known for its peace and significant cultural growth.

Which amendment to the Constitution provided constitutional status to Panchayati Raj institutions?

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Correct Answer: C. 73rd Amendment

The 73rd Amendment Act was passed in 1992 to strengthen rural local government. it added Part IX and the Eleventh Schedule to the Indian Constitution. This amendment mandates a three-tier system of Panchayats in states.

Which is the main component of Liquefied Petroleum Gas (LPG)?

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Correct Answer: A. Butane

Butane is the primary hydrocarbon found in the gas mixture used for cooking. It is easily liquefied under pressure for storage in steel cylinders. Propane is another major component found alongside butane in LPG.

Sound waves cannot travel through which of the following?

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Correct Answer: D. Vacuum

Sound is a mechanical wave that requires a material medium to propagate. It cannot travel through a vacuum because there are no particles to vibrate. Light, unlike sound, can travel through the emptiness of space.