RRB Group D — Set 23
40 questions
What is the escape velocity for Earth?
Correct Answer: A. 11.2 km/s
The escape velocity for Earth is approximately 11.2 km/s. It is the minimum speed needed to break free from Earth's gravitational pull. This value is independent of the mass of the escaping object.
In which year did Mahatma Gandhi lead the Champaran Satyagraha?
Correct Answer: B. 1917
The Champaran Satyagraha took place in 1917 in Bihar. It was the first satyagraha movement led by Mahatma Gandhi in India. This movement was launched to address the grievances of indigo farmers.
Which is the largest river island in the world?
Correct Answer: C. Majuli Island
Majuli Island is the largest river island in the world. It is located in the Brahmaputra River in the state of Assam. It was formed due to course changes by the river and its tributaries.
Brass is an alloy of which two metals?
Correct Answer: D. Copper and Zinc
Brass is primarily an alloy made of copper and zinc. The proportions can be varied to achieve different mechanical and electrical properties. It is widely used for decoration and musical instruments.
Which article of the Indian Constitution provides for the 'Abolition of Untouchability'?
Correct Answer: A. Article 17
Article 17 of the Indian Constitution abolishes the practice of untouchability. It declares its practice in any form as a punishable offense. This is a crucial fundamental right for ensuring social equality.
Who proposed the Cell Theory in biology?
Correct Answer: B. Schleiden and Schwann
The Cell Theory was proposed by Matthias Schleiden and Theodor Schwann. It states that all living organisms are composed of one or more cells. The theory also clarifies that the cell is the basic unit of life.
The famous monument 'Diwan-i-Khas' is located in which fort?
Correct Answer: C. Red Fort
The Diwan-i-Khas is a hall of private audience located in the Red Fort of Delhi. It was built by the Mughal Emperor Shah Jahan in the 17th century. The famous Peacock Throne was once kept in this hall.
Which of the following describes the first law of reflection?
Correct Answer: D. Angle of incidence equals the angle of reflection
The first law of reflection states that the angle of incidence equals the angle of reflection. This law applies to all types of reflecting surfaces like plane and spherical mirrors. The angles are measured relative to the normal line.
Jog Falls, one of the highest waterfalls in India, is located on which river?
Correct Answer: A. Sharavathi
Jog Falls is located on the Sharavathi River in the state of Karnataka. It is also known as Gerosoppa Falls or Jogada Gundi. The waterfall is a major tourist attraction especially during the monsoon.
Who discovered the 'Double Helix' structure of DNA?
Correct Answer: B. Watson and Crick
James Watson and Francis Crick discovered the double helix structure of DNA in 1953. This discovery explained how genetic information is stored and copied in living organisms. They were awarded the Nobel Prize for this achievement in 1962.
On which date was the National Anthem of India officially adopted by the Constituent Assembly?
Correct Answer: C. 24 January 1950
The National Anthem 'Jana Gana Mana' was adopted on 24 January 1950. It was originally composed in Bengali by Rabindranath Tagore. The complete song takes approximately 52 seconds to sing.
Which British official introduced the 'Subsidiary Alliance' system in India?
Correct Answer: D. Lord Wellesley
The Subsidiary Alliance system was introduced by Lord Wellesley to expand British influence. Under this, Indian rulers had to keep British forces in their territory. The Nizam of Hyderabad was the first to accept this alliance.
What is the S.I. unit of Electrical Resistance?
Correct Answer: A. Ohm
The S.I. unit of electrical resistance is the Ohm. It is represented by the Greek symbol Omega (Ω). Resistance is the property of a conductor to oppose the flow of current.
Which is the largest continent in the world by land area?
Correct Answer: B. Asia
Asia is the largest continent in the world by both land area and population. It covers about 30% of Earth's total land area. It is home to diverse climates ranging from arctic to tropical.
Who was the first woman Governor of an Indian state?
Correct Answer: C. Sarojini Naidu
Sarojini Naidu was the first woman to serve as the Governor of an Indian state. She held the office in Uttar Pradesh from 1947 to 1949. She was also a renowned poet known as the 'Nightingale of India'.
Which gases are primarily responsible for Acid Rain?
Correct Answer: D. Sulfur Dioxide and Nitrogen Oxides
Acid rain is primarily caused by Sulfur Dioxide and Nitrogen Oxides. These gases react with water molecules in the atmosphere to form acids. Acid rain can damage buildings, forests, and aquatic life.
Which British Governor-General introduced the 'Permanent Settlement' in Bengal?
Correct Answer: A. Lord Cornwallis
Lord Cornwallis introduced the Permanent Settlement system in 1793. It fixed the land revenue to be paid by zamindars to the British government. This system had a significant impact on the agrarian structure of Bengal.
Deficiency of which vitamin causes 'Night Blindness'?
Correct Answer: B. Vitamin A
Night blindness is caused by a deficiency of Vitamin A. It is a condition where it becomes difficult or impossible to see in relatively low light. Carrots and green leafy vegetables are rich sources of Vitamin A.
How many High Courts are currently functioning in India?
Correct Answer: C. 25
There are currently 25 High Courts functioning in India. The Andhra Pradesh High Court in Amaravati is the latest one established. Some High Courts have jurisdiction over more than one state or territory.
What is the speed of light in a vacuum?
Correct Answer: D. 3 x 10^8 m/s
The speed of light in a vacuum is approximately 3 x 10^8 meters per second. It is considered a universal physical constant in physics. Light takes about 8 minutes and 20 seconds to reach Earth from the Sun.
Which region is famously known as the 'Roof of the World'?
Correct Answer: A. Pamir Mountains
The Pamir Mountains are known as the 'Roof of the World' due to their high elevation. They are located at the junction of several major mountain ranges. The region is situated primarily in Tajikistan.
Who was the founder of the Pala Dynasty in Bengal?
Correct Answer: B. Gopala
Gopala was the founder of the Pala Dynasty in the 8th century. He was elected by the local chieftains to bring order to the region. The Pala rulers were great patrons of Mahayana Buddhism.
Which of the following optical instruments uses a convex lens?
Correct Answer: C. Magnifying Glass
A magnifying glass uses a convex lens to create an enlarged image of an object. It works by placing the object closer to the lens than its focal point. This creates a virtual, erect, and magnified image.
When did the first meeting of the Constituent Assembly take place?
Correct Answer: D. 9 December 1946
The first meeting of the Constituent Assembly was held on 9 December 1946. Dr. Sachchidananda Sinha was appointed as the temporary President of the Assembly. Muslim League boycotted this meeting demanding a separate state.
Lavani is a popular folk dance of which Indian state?
Correct Answer: A. Maharashtra
Lavani is a traditional folk dance form of Maharashtra. It is characterized by powerful rhythms and is usually performed to the beats of a Dholki. The dance is known for its social and political commentary.
Which part of the human brain is responsible for maintaining body balance and posture?
Correct Answer: B. Cerebellum
The cerebellum is the part of the brain that coordinates voluntary movements. It is essential for maintaining balance, posture, and equilibrium. It is located at the back of the skull below the cerebrum.
Which British Viceroy passed the 'Vernacular Press Act' of 1878?
Correct Answer: C. Lord Lytton
Lord Lytton passed the Vernacular Press Act to curtail the freedom of the Indian press. It was designed to suppress criticism of British policies in local languages. The act was later repealed by Lord Ripon in 1882.
What is the chemical composition of 'Dry Ice'?
Correct Answer: D. Solid Carbon Dioxide
Dry ice is the solid form of Carbon Dioxide (CO2). It is called 'dry' because it sublimates directly into gas without melting into a liquid. It is used primarily as a cooling agent for food preservation.
The Hirakud Dam, the longest earthen dam in India, is built on which river?
Correct Answer: A. Mahanadi
The Hirakud Dam is built across the Mahanadi River in Odisha. It was one of the first major multipurpose river valley projects after independence. The dam forms the largest artificial lake in Asia.
Hydraulic lifts and brakes work on the basis of which law?
Correct Answer: B. Pascal's Law
Hydraulic lifts and brakes operate based on Pascal's Law. This law states that pressure applied to a confined fluid is transmitted equally in all directions. It allows a small force to move a much larger load.
Which article of the Constitution provides for the Comptroller and Auditor General (CAG) of India?
Correct Answer: C. Article 148
Article 148 provides for the independent office of the Comptroller and Auditor General. The CAG is the guardian of the public purse in India. This official is appointed by the President of India.
On which day did the Jallianwala Bagh Massacre occur?
Correct Answer: D. 13 April 1919
The Jallianwala Bagh Massacre took place on 13 April 1919 in Amritsar. British troops under General Dyer fired on a crowd of non-violent protesters. This event was a major turning point in the Indian freedom struggle.
Deficiency of Vitamin B1 leads to which of the following diseases?
Correct Answer: A. Beriberi
Deficiency of Vitamin B1 (Thiamine) leads to Beriberi. This disease can affect the cardiovascular system or the nervous system. Whole grains and legumes are excellent sources of Vitamin B1.
Which river is the second longest river in India after the Ganga?
Correct Answer: B. Godavari
The Godavari is the second longest river in India. It is often referred to as 'Dakshina Ganga' due to its size and spiritual significance. The river originates in Nashik and flows into the Bay of Bengal.
Which isotope of Carbon is used in the process of Radiocarbon Dating?
Correct Answer: C. Carbon-14
Carbon-14 is the radioactive isotope used in radiocarbon dating. It allows scientists to determine the age of organic materials up to 50,000 years old. This technique is widely used in archaeology and geology.
In which year was the State Reorganisation Act passed in India?
Correct Answer: D. 1956
The State Reorganisation Act was passed in 1956. It recommended the reorganization of state boundaries on a linguistic basis. It resulted in the creation of 14 states and 6 union territories.
Who was the first Muslim President of the Indian National Congress?
Correct Answer: A. Badruddin Tyabji
Badruddin Tyabji was the first Muslim President of the INC. He presided over the Madras session of the Congress in 1887. He was also a prominent lawyer and judge in Mumbai.
The zigzag motion of small particles suspended in a liquid or gas is called?
Correct Answer: B. Brownian Motion
The random movement of particles in a fluid is called Brownian motion. It is caused by collisions with the fast-moving molecules of the fluid. This phenomenon was first observed by botanist Robert Brown.
According to the 2011 Census, which Indian state has the highest population density?
Correct Answer: C. Bihar
Bihar has the highest population density in India as per the 2011 Census. It has approximately 1,106 persons living per square kilometer. West Bengal follows it as the second most densely populated state.
In which city is the headquarters of UNESCO located?
Correct Answer: D. Paris
The headquarters of UNESCO is located in Paris, France. UNESCO stands for United Nations Educational, Scientific and Cultural Organization. It was established in 1945 to promote international cooperation and peace.