RRB Group D — Set 8

Q: What is the SI unit of electrical resistance?

Ohm. Ohm is the standard SI unit used to measure electrical resistance. It is represented by the Greek symbol Omega. Resistance determines how much a material opposes the flow of electric current.

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

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.

Q: Which cell organelle is known as the powerhouse of the cell?

Mitochondria. Mitochondria are responsible for generating most of the cell's supply of adenosine triphosphate. This process is known as cellular respiration. They are found in most eukaryotic organisms.

Q: How many Fundamental Duties are currently listed in the Indian Constitution?

11. There are currently 11 Fundamental Duties listed in Article 51A of the Constitution. Originally there were only ten duties added by the 42nd Amendment. The eleventh duty was added by the 86th Amendment in 2002.

Q: Which is the longest river flowing entirely within India?

Ganga. The Ganga is the longest river in India with a total length of approximately 2525 km. It originates from the Gangotri Glacier in the Himalayas. The river eventually empties into the Bay of Bengal.

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What is the SI unit of electrical resistance?

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Correct Answer: A. Ohm

Ohm is the standard SI unit used to measure electrical resistance. It is represented by the Greek symbol Omega. Resistance determines how much a material opposes the flow of electric current.

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

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Correct Answer: B. 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.

Which cell organelle is known as the powerhouse of the cell?

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Correct Answer: C. Mitochondria

Mitochondria are responsible for generating most of the cell's supply of adenosine triphosphate. This process is known as cellular respiration. They are found in most eukaryotic organisms.

How many Fundamental Duties are currently listed in the Indian Constitution?

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Correct Answer: D. 11

There are currently 11 Fundamental Duties listed in Article 51A of the Constitution. Originally there were only ten duties added by the 42nd Amendment. The eleventh duty was added by the 86th Amendment in 2002.

Which is the longest river flowing entirely within India?

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Correct Answer: A. Ganga

The Ganga is the longest river in India with a total length of approximately 2525 km. It originates from the Gangotri Glacier in the Himalayas. The river eventually empties into the Bay of Bengal.

In which year did the Battle of Plassey take place?

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Correct Answer: B. 1757

The Battle of Plassey was fought on June 23, 1757. It was a decisive victory for the British East India Company over the Nawab of Bengal. Robert Clive led the British forces during this historic battle.

Which of the following is the richest source of Vitamin C?

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Correct Answer: C. Citrus fruits

Citrus fruits like lemons and oranges are naturally high in Vitamin C. This vitamin is essential for the repair of all body tissues and immune function. A deficiency in Vitamin C can lead to a disease called scurvy.

Where is the headquarters of the Indian Space Research Organisation (ISRO) located?

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Correct Answer: D. Bengaluru

The headquarters of ISRO is situated in Bengaluru, Karnataka. It was established in 1969 to harness space technology for national development. The organization operates under the Department of Space.

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

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Correct Answer: A. Convex mirror

Convex mirrors are used in vehicles because they provide a wider field of view. They always form an erect and diminished image of distant objects. This helps drivers see a larger area of traffic behind them.

What is the chemical formula of baking soda?

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Correct Answer: B. NaHCO3

The chemical formula for baking soda is NaHCO3, which is sodium bicarbonate. It is commonly used in cooking as a leavening agent. It reacts with acidic components to release carbon dioxide gas.

Who was the first Governor-General of Bengal?

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Correct Answer: C. Warren Hastings

Warren Hastings became the first Governor-General of Bengal in 1773. He was appointed under the provisions of the Regulating Act of 1773. He played a key role in consolidating British rule in India.

Which is the largest planet in our solar system?

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Correct Answer: D. Jupiter

Jupiter is the largest planet in the solar system by both mass and volume. It is a gas giant primarily composed of hydrogen and helium. It is famous for its Great Red Spot, a massive storm.

What is the unit of frequency in the SI system?

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Correct Answer: A. Hertz

Hertz is the SI unit used to measure the frequency of periodic phenomena. One Hertz is equal to one cycle per second. It is named after the German physicist Heinrich Hertz.

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

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Correct Answer: B. 35 years

According to the Constitution, a person must be at least 35 years old to be eligible for the presidency. They must also be a citizen of India and qualified for election as a member of the Lok Sabha. The President is the formal head of the executive branch.

Who was the founder of the Mughal Empire in India?

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Correct Answer: C. Babur

Babur founded the Mughal Empire after winning the First Battle of Panipat. He defeated Ibrahim Lodi in the year 1526. He was a descendant of Timur and Genghis Khan.

In which city is the Gateway of India located?

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Correct Answer: D. Mumbai

The Gateway of India is a historic monument located in Mumbai. It was built to commemorate the visit of King George V and Queen Mary to India. It faces the Arabian Sea at the Apollo Bunder area.

What is the normal temperature of the human body in degrees Celsius?

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Correct Answer: A. 37°C

The average normal body temperature is generally accepted as 37°C. In Fahrenheit, this is equivalent to 98.6°F. This temperature can vary slightly depending on the individual and time of day.

Which Indian state has the longest coastline?

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Correct Answer: B. Gujarat

Gujarat has the longest coastline among all Indian states, stretching over 1600 km. It is located on the western coast of India along the Arabian Sea. The state features several important ports like Kandla.

Which inert gas is commonly filled in electric bulbs?

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Correct Answer: C. Argon

Argon is frequently used in electric bulbs to prevent the filament from oxidizing. It is an inert gas that does not react with the hot tungsten filament. This helps in increasing the life of the bulb.

When is National Science Day celebrated in India?

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Correct Answer: D. 28 February

National Science Day is celebrated on 28 February every year. It commemorates the discovery of the Raman Effect by Sir C.V. Raman. He was awarded the Nobel Prize in Physics for this discovery in 1930.

What is the study of fungi called?

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Correct Answer: A. Mycology

Mycology is the branch of biology concerned with the study of fungi. This includes their genetic and biochemical properties. Phycology, on the other hand, is the study of algae.

In which year was the Quit India Movement launched?

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Correct Answer: B. 1942

The Quit India Movement was launched by Mahatma Gandhi on August 8, 1942. It demanded an end to British Rule in India. During this movement, Gandhi gave the famous slogan 'Do or Die'.

Which article of the Indian Constitution deals with the abolition of untouchability?

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Correct Answer: C. Article 17

Article 17 of the Constitution of India formally abolishes untouchability. It forbids its practice in any form whatsoever. This is a crucial fundamental right aimed at ensuring social equality.

A 'Light Year' is a unit of which physical quantity?

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Correct Answer: D. Distance

A light year is the distance that light travels in a vacuum in one year. It is used to measure vast astronomical distances between stars and galaxies. One light year is approximately 9.46 trillion kilometers.

Who was the first woman Prime Minister of India?

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Correct Answer: A. Indira Gandhi

Indira Gandhi served as the first and only woman Prime Minister of India. She was the daughter of Jawaharlal Nehru, India's first Prime Minister. She served multiple terms between 1966 and 1984.

Which water body separates India from Sri Lanka?

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Correct Answer: B. Palk Strait

The Palk Strait is a narrow strip of water that connects the Bay of Bengal with the Gulf of Mannar. It lies between the Tamil Nadu state of India and the Mannar district of Sri Lanka. It is named after Robert Palk.

Which metal remains in a liquid state at room temperature?

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Correct Answer: C. Mercury

Mercury is the only metallic element that is liquid at standard room temperature. It is commonly used in thermometers and barometers because of its high thermal expansion. It is also known by the name quicksilver.

What was the capital of the Mauryan Empire under Ashoka?

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Correct Answer: D. Pataliputra

Pataliputra served as the capital of the Mauryan Empire during the reign of Ashoka. The city is known as modern-day Patna in Bihar. It was a major center of political and cultural activities in ancient India.

Which acid is found in lemons?

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Correct Answer: A. Citric acid

Lemons contain a high concentration of citric acid which gives them a sour taste. Citric acid is a weak organic acid commonly found in citrus fruits. It acts as a natural preservative and antioxidant.

Where is the headquarters of UNESCO located?

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Correct Answer: B. Paris

The headquarters of UNESCO is located in Paris, France. UNESCO stands for the United Nations Educational, Scientific and Cultural Organization. It was founded in 1945 to promote international cooperation.

Sound waves cannot travel through which of the following?

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Correct Answer: C. Vacuum

Sound waves require a medium like a solid, liquid, or gas to travel. Since a vacuum has no particles, sound cannot be transmitted through it. This is why sound cannot travel through outer space.

What is the term of a member of the Rajya Sabha?

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Correct Answer: D. 6 years

Members of the Rajya Sabha are elected for a term of six years. One-third of the members retire every two years to ensure continuity. The Rajya Sabha is a permanent body and cannot be dissolved.

Which instrument is used to measure atmospheric pressure?

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Correct Answer: A. Barometer

A barometer is a scientific instrument used to measure air pressure in a certain environment. Sudden changes in air pressure can help in forecasting weather conditions. Evangelista Torricelli is credited with inventing the first barometer.

In which year did the Simon Commission arrive in India?

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Correct Answer: B. 1928

The Simon Commission arrived in India in 1928 to report on the working of the Indian constitution. It was met with widespread protests because it had no Indian members. The slogan 'Simon Go Back' became famous during this time.

Which is the highest mountain peak located in India?

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Correct Answer: C. Kanchenjunga

Kanchenjunga is the highest peak in India and the third highest in the world. It is situated on the border between Sikkim, India and Nepal. Mount Everest is the highest in the world but is located in Nepal.

When is World Environment Day observed globally?

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Correct Answer: D. 5 June

World Environment Day is celebrated annually on 5 June. It is the United Nations' principal vehicle for encouraging worldwide awareness for the environment. It was first established in 1972.

Which chemical element has the atomic number 1?

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Correct Answer: A. Hydrogen

Hydrogen is the first element in the periodic table with the atomic number 1. It is the lightest and most abundant chemical substance in the universe. It typically consists of one proton and one electron.

The First Battle of Panipat was fought in which year?

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Correct Answer: B. 1526

The First Battle of Panipat took place on April 21, 1526. It was fought between the invading forces of Babur and the Lodi dynasty. This battle marked the beginning of Mughal rule in India.

Which blood group is known as the universal donor?

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Correct Answer: C. O negative

O negative blood is considered the universal donor type. This is because it lacks A, B, and Rh antigens on the red blood cells. It can be given to patients of any blood type in emergencies.

In which Indian state is the Kaziranga National Park located?

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Correct Answer: D. Assam

Kaziranga National Park is located in the state of Assam. It is a UNESCO World Heritage site famous for its one-horned rhinoceroses. The park is situated on the banks of the Brahmaputra River.