RRB Group D — Set 20

Q: Which law of motion is also known as the Law of Inertia?

First Law. Newton's First Law of motion is called the Law of Inertia because it describes objects' resistance to changes in motion. It states that an object will remain at rest unless acted upon by an external force. Inertia is directly proportional to the mass of an object.

Q: A deficiency of which vitamin causes 'Night Blindness'?

Vitamin A. Vitamin A is essential for maintaining healthy vision and a strong immune system. Its deficiency leads to difficulty seeing in low light or at night. Carrots and green leafy vegetables are excellent sources of this vitamin.

Q: Which type of soil is also known as 'Regur Soil'?

Black Soil. Black soil is famously known as Regur soil and is ideal for growing cotton. It has a high water-retaining capacity and becomes sticky when wet. This soil is predominantly found in the Deccan Trap region of India.

Q: At which place did Gautama Buddha deliver his first sermon?

Sarnath. Gautama Buddha delivered his first sermon at Sarnath near Varanasi. This event is known in Buddhist tradition as 'Dharmachakra Pravartana'. He attained enlightenment earlier under a peepal tree in Bodh Gaya.

Q: Which Article of the Indian Constitution guarantees 'Equality Before Law'?

Article 14. Article 14 ensures that all persons are equal before the law within the territory of India. It prohibits discrimination by the State on various grounds. This is a core fundamental right that forms the basis of Indian democracy.

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Which law of motion is also known as the Law of Inertia?

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Correct Answer: A. First Law

Newton's First Law of motion is called the Law of Inertia because it describes objects' resistance to changes in motion. It states that an object will remain at rest unless acted upon by an external force. Inertia is directly proportional to the mass of an object.

A deficiency of which vitamin causes 'Night Blindness'?

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Correct Answer: B. Vitamin A

Vitamin A is essential for maintaining healthy vision and a strong immune system. Its deficiency leads to difficulty seeing in low light or at night. Carrots and green leafy vegetables are excellent sources of this vitamin.

Which type of soil is also known as 'Regur Soil'?

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Correct Answer: C. Black Soil

Black soil is famously known as Regur soil and is ideal for growing cotton. It has a high water-retaining capacity and becomes sticky when wet. This soil is predominantly found in the Deccan Trap region of India.

At which place did Gautama Buddha deliver his first sermon?

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Correct Answer: D. Sarnath

Gautama Buddha delivered his first sermon at Sarnath near Varanasi. This event is known in Buddhist tradition as 'Dharmachakra Pravartana'. He attained enlightenment earlier under a peepal tree in Bodh Gaya.

Which Article of the Indian Constitution guarantees 'Equality Before Law'?

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Correct Answer: A. Article 14

Article 14 ensures that all persons are equal before the law within the territory of India. It prohibits discrimination by the State on various grounds. This is a core fundamental right that forms the basis of Indian democracy.

Which of the following is considered a 'Noble Gas'?

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Correct Answer: B. Helium

Helium is a noble gas because it is chemically inert and does not easily react with other elements. It belongs to Group 18 of the periodic table along with gases like Neon and Argon. Helium is commonly used in weather balloons due to its low density.

The famous classical dance form 'Kathakali' originated in which state?

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Correct Answer: C. Kerala

Kathakali is a highly stylized classical dance-drama that originated in Kerala. It is known for its elaborate costumes, vibrant face masks, and detailed hand gestures. The themes are usually based on Indian epics like the Ramayana and Mahabharata.

Who was the primary leader of the 1857 revolt at Barrackpore?

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Correct Answer: D. Mangal Pandey

Mangal Pandey was a soldier in the 34th Bengal Native Infantry who revolted against the use of greased cartridges. His actions at Barrackpore sparked the widespread uprising of 1857. He is regarded as one of the earliest martyrs of the Indian independence movement.

Which plant tissue is responsible for the transportation of water from roots to leaves?

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Correct Answer: A. Xylem

Xylem is a vascular tissue that conducts water and minerals upwards from the roots. It also provides structural support to the plant body. Phloem, by contrast, is responsible for transporting food produced in the leaves.

On which river is the Hirakud Dam built?

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Correct Answer: B. Mahanadi

The Hirakud Dam is constructed across the Mahanadi River in the state of Odisha. It is one of the longest earthen dams in the world. The dam helps in flood control, irrigation, and hydroelectric power generation.

In which year was the first Five-Year Plan launched in India?

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Correct Answer: C. 1951

The first Five-Year Plan was launched in 1951 with a primary focus on agricultural development. It was based on the Harrod-Domar model of economic growth. The plan successfully helped in increasing food production across the country.

Which of the following physical quantities is a vector quantity?

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Correct Answer: D. Velocity

Velocity is a vector quantity because it has both a specific magnitude and a direction. Unlike speed, which is a scalar, velocity describes the rate of change of displacement. Acceleration and force are also examples of vector quantities.

Who was the Greek ambassador sent to the court of Chandragupta Maurya?

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Correct Answer: A. Megasthenes

Megasthenes was a Greek historian and ambassador sent by Seleucus I Nicator. He wrote the famous book 'Indica' which describes the Mauryan administration. His writings provide valuable insights into ancient Indian social life.

Who is the ex-officio Chairman of the Rajya Sabha?

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Correct Answer: B. Vice President

The Vice President of India serves as the ex-officio Chairman of the Rajya Sabha. They preside over the proceedings of the upper house of Parliament. In the absence of the President, the Vice President discharges their duties.

Bronze is an alloy of which two metals?

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Correct Answer: C. Copper and Tin

Bronze is primarily composed of copper mixed with about 12% tin. It is harder than pure copper and was widely used in ancient civilizations for tools. Brass, however, is an alloy made of copper and zinc.

International Day of Yoga is celebrated every year on which date?

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Correct Answer: D. 21 June

International Day of Yoga is observed on 21 June to promote the global health benefits of yoga. The date coincides with the summer solstice, the longest day of the year in the Northern Hemisphere. It was first officially celebrated worldwide in 2015.

Which blood group is known as the 'Universal Recipient'?

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Correct Answer: A. AB positive

AB positive blood is the universal recipient because it has both A and B antigens and lacks antibodies. This allows a person with this blood group to receive blood from any other type. Conversely, O negative is the universal donor group.

Which planet is known as 'Earth's Twin' due to its similar size and mass?

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Correct Answer: B. Venus

Venus is often called Earth's twin because of its similar diameter and density. However, it has a very thick atmosphere of carbon dioxide making it the hottest planet. It is also the brightest natural object in the night sky after the Moon.

The Battle of Haldighati was fought between Maharana Pratap and the forces of which Mughal Emperor?

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Correct Answer: C. Akbar

The Battle of Haldighati took place in 1576 between Maharana Pratap and Akbar's army led by Raja Man Singh. Although the Mughals were victorious, Maharana Pratap continued his resistance from the hills. This battle is remembered for the extraordinary bravery of the Rajput warriors.

The word 'Socialist' was added to the Preamble of the Indian Constitution by which amendment?

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Correct Answer: D. 42nd Amendment

The terms 'Socialist', 'Secular', and 'Integrity' were added by the 42nd Amendment Act of 1976. This amendment is often referred to as the 'Mini-Constitution' of India. It brought widespread changes to the constitutional structure during the Emergency.

Which unit is used to measure the intensity of sound?

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Correct Answer: A. Decibel

The decibel is a logarithmic unit used to express the ratio of sound intensity. High exposure to sounds above 85 decibels can lead to permanent hearing damage. It is named after Alexander Graham Bell, the inventor of the telephone.

Which pigment gives leaves their green color and captures sunlight for photosynthesis?

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Correct Answer: B. Chlorophyll

Chlorophyll is the green pigment found in chloroplasts that absorbs light energy. This energy is used to convert carbon dioxide and water into glucose. Magnesium is the central metal ion present in a chlorophyll molecule.

In which city was Chhatrapati Shivaji Maharaj coronated as Chhatrapati?

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Correct Answer: C. Raigad

Shivaji Maharaj was coronated as the Chhatrapati of the Maratha Kingdom in 1674 at Raigad Fort. He established a disciplined military and innovative administrative system. Raigad served as the capital of the Maratha Empire for many years.

In which year was the Reserve Bank of India (RBI) established?

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Correct Answer: D. 1935

The Reserve Bank of India was established on April 1, 1935, based on the Hilton Young Commission's recommendations. It initially operated as a private shareholders' bank before being nationalized in 1949. It acts as the central banking institution and regulator of the Indian rupee.

Which is the largest brackish water lake in India?

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Correct Answer: A. Chilika Lake

Chilika Lake, located in Odisha, is the largest brackish water lagoon in India. it is a major wintering ground for migratory birds from as far as Siberia. In 1981, it was designated as the first Indian wetland of international importance under the Ramsar Convention.

Which part of the human respiratory system is the site for gas exchange?

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Correct Answer: B. Alveoli

Alveoli are tiny air sacs at the end of the respiratory tree where oxygen and carbon dioxide are exchanged. The walls of the alveoli are extremely thin and surrounded by capillaries. There are hundreds of millions of alveoli in each human lung.

The Dandi March led by Mahatma Gandhi was a protest against which tax?

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Correct Answer: C. Salt Tax

The Dandi March of 1930 was a direct action campaign against the British salt monopoly. Gandhi walked from Sabarmati Ashram to the coastal village of Dandi to produce salt. This event marked the beginning of the Civil Disobedience Movement.

Where is the headquarters of the World Health Organization (WHO) located?

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Correct Answer: D. Geneva

The World Health Organization is headquartered in Geneva, Switzerland. It was established in 1948 to direct and coordinate international health work. April 7 is celebrated as World Health Day to mark its founding.

Fundamental Rights are contained in which Part of the Indian Constitution?

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Correct Answer: A. Part III

Part III of the Constitution covers Articles 12 to 35, which deal with Fundamental Rights. These rights are often called the 'Magna Carta' of India. They ensure civil liberties and protect citizens against the arbitrary exercise of state power.

The disease 'Beriberi' is caused by the deficiency of which vitamin?

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Correct Answer: B. Vitamin B1

Beriberi is a disease caused by a lack of Thiamine, also known as Vitamin B1. It can affect the cardiovascular system or the nervous system. Whole grains and legumes are rich sources of Thiamine.

The famous Khajuraho temples were built by the rulers of which dynasty?

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Correct Answer: C. Chandela

The Khajuraho group of monuments was built by the Chandela dynasty between 950 and 1050 AD. These temples in Madhya Pradesh are famous for their Nagara-style architecture and erotic sculptures. They are recognized as a UNESCO World Heritage site.

What is the SI unit of density?

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Correct Answer: D. kg/m^3

The SI unit of density is kilogram per cubic meter. Density is defined as the mass of a substance per unit of its volume. Water has a maximum density of approximately 1000 kg/m^3 at 4 degrees Celsius.

Rohtang Pass connects the Kullu Valley with which other valley?

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Correct Answer: A. Lahaul and Spiti

Rohtang Pass is a high mountain pass on the eastern Pir Panjal Range in Himachal Pradesh. It acts as a gateway to the Lahaul and Spiti valleys. The Atal Tunnel was built nearby to provide all-weather connectivity.

Which form of carbon is used as a lubricant in heavy machinery?

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Correct Answer: B. Graphite

Graphite is an allotrope of carbon that has a layered structure, allowing layers to slide over each other. This property makes it an excellent dry lubricant for high-temperature applications. It is also a good conductor of electricity unlike most non-metals.

Which hormone is secreted by the Pancreas to regulate blood sugar levels?

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Correct Answer: C. Insulin

Insulin is a hormone produced by the beta cells of the pancreas. It helps cells absorb glucose from the bloodstream to be used as energy. A lack of insulin production or response leads to a condition called Diabetes.

In which year did the Cabinet Mission arrive in India?

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Correct Answer: D. 1946

The Cabinet Mission came to India in 1946 to discuss the transfer of power to Indian leadership. It proposed a plan for a federal government and a constituent assembly. The mission consisted of three British cabinet members.

Which Article provides for the appointment of the Comptroller and Auditor General (CAG) of India?

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Correct Answer: A. Article 148

Article 148 of the Constitution mandates the appointment of the CAG by the President. The CAG is the guardian of the public purse and audits all government expenditures. This office is crucial for ensuring financial accountability in the government.

Which type of lens is used to correct 'Myopia' (Short-sightedness)?

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Correct Answer: B. Concave lens

Myopia is a vision condition where close objects appear clear but far ones are blurry. A concave lens is used to diverge incoming light rays so they focus correctly on the retina. It is the most common vision correction needed by young people.

In which year was the 'Bharat Ratna', India's highest civilian award, instituted?

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Correct Answer: C. 1954

The Bharat Ratna award was established in 1954 to recognize exceptional service of the highest order. The first recipients were C. Rajagopalachari, Sarvepalli Radhakrishnan, and C.V. Raman. It is awarded by the President of India on the recommendation of the Prime Minister.

The Tropic of Cancer passes through how many Indian states?

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Correct Answer: D. 8

The Tropic of Cancer passes through 8 Indian states: Gujarat, Rajasthan, Madhya Pradesh, Chhattisgarh, Jharkhand, West Bengal, Tripura, and Mizoram. The Tropic of Cancer at 23.5°N latitude cuts across these 8 states from west to east. Of the 8 states through which the Tropic of Cancer passes, Mizoram and Tripura are in the northeast. The Tropic of Cancer divides India into the tropical and sub-tropical zones.