RRB Group D — Set 21
40 questions
Which of the following is the basic structural and functional unit of the human kidney?
Correct Answer: A. Nephron
The nephron is the microscopic functional unit of the kidney. It filters blood and balances water and salts to produce urine. Each human kidney contains approximately one million nephrons.
In which year was the historic Battle of Haldighati fought?
Correct Answer: B. 1576
The Battle of Haldighati took place in June 1576. It was fought between the forces of Maharana Pratap and the Mughal army of Akbar. The Mughal army was led by Raja Man Singh of Amber.
What is the minimum age required to become a member of the Rajya Sabha?
Correct Answer: C. 30 years
A person must be at least 30 years old to qualify for a seat in the Rajya Sabha. This requirement is specified in Article 84 of the Indian Constitution. In contrast, the minimum age for the Lok Sabha is 25 years.
An electric fuse wire is generally made of an alloy characterized by which properties?
Correct Answer: D. High resistance and low melting point
A fuse wire must have high resistance and a low melting point to function safely. It melts and breaks the circuit during an electrical overload to prevent fire. The alloy used is typically a combination of tin and lead.
Which is the highest peak of the Satpura mountain range in India?
Correct Answer: A. Dhupgarh
Dhupgarh is the highest point in the Satpura Range, located in Madhya Pradesh. It has an elevation of 1,350 meters above sea level. It is situated in the Pachmarhi Biosphere Reserve.
The classical dance form 'Sattriya' is associated with which Indian state?
Correct Answer: B. Assam
Sattriya is a traditional dance-drama originating from the Sattras or monasteries of Assam. It was introduced by the great saint Mahapurush Sankaradeva in the 15th century. It is one of the eight major classical dances recognized by India.
The alloy 'Solder', used for joining electrical wires, consists of which two metals?
Correct Answer: C. Lead and Tin
Solder is a fusible metal alloy made of Lead (Pb) and Tin (Sn). It has a low melting point, which allows it to melt and join metal parts easily. It is essential in the manufacturing and repair of electronic circuits.
Which Article of the Indian Constitution defines a 'Money Bill'?
Correct Answer: D. Article 110
Article 110 of the Constitution provides the specific definition of a Money Bill. A bill is deemed a Money Bill if it deals exclusively with matters like taxation or government borrowing. The Speaker of the Lok Sabha has the final authority to certify it.
Which cell organelle is known as the 'Protein Factory' of the cell?
Correct Answer: A. Ribosome
Ribosomes are responsible for synthesizing proteins by translating messenger RNA. They can be found floating in the cytoplasm or attached to the endoplasmic reticulum. Every living cell requires ribosomes to produce essential proteins for survival.
The First Buddhist Council was held at which of the following places?
Correct Answer: B. Rajgriha
The First Buddhist Council was held at the Saptaparni cave in Rajgriha. It took place shortly after the death of Lord Buddha under the patronage of King Ajatashatru. The monk Mahakassapa presided over this historic assembly.
Which Article of the Indian Constitution provides for a Uniform Civil Code (UCC)?
Correct Answer: C. Article 44
Article 44 directs the State to endeavor to secure a Uniform Civil Code for all citizens. It is one of the Directive Principles of State Policy listed in Part IV. This code aims to provide a common set of personal laws for all religions.
What is the speed of sound waves in a vacuum?
Correct Answer: D. Zero
Sound waves cannot travel through a vacuum because they require a material medium. Since there are no particles to vibrate in a vacuum, sound speed is zero. In contrast, light can travel through a vacuum at its maximum speed.
The 'Mariana Trench', the deepest part of the Earth's oceans, is located in which ocean?
Correct Answer: A. Pacific Ocean
The Mariana Trench is located in the western Pacific Ocean. It reaches a maximum depth of approximately 11,000 meters at the Challenger Deep. It was formed by the subduction of the Pacific Plate beneath the Mariana Plate.
World Health Day is celebrated every year on which of the following dates?
Correct Answer: B. April 7
World Health Day is observed on April 7 to mark the founding of the WHO in 1948. Each year, the day focuses on a specific health theme of global importance. It serves as an opportunity to raise awareness about universal health coverage.
Which organic acid is primarily found in Vinegar?
Correct Answer: C. Acetic Acid
Vinegar is an aqueous solution that typically contains 5-8 percent Acetic Acid. It is produced through the fermentation of ethanol by acetic acid bacteria. It is widely used in food preservation and as a household cleaning agent.
Who was the British Governor-General who introduced the 'Subsidiary Alliance' system in India?
Correct Answer: D. Lord Wellesley
Lord Wellesley introduced the Subsidiary Alliance system to expand British influence over Indian states. Under this, Indian rulers had to maintain a British force and accept a British Resident. The Nizam of Hyderabad was the first ruler to accept this alliance.
What is the average lifespan of Red Blood Cells (RBCs) in a healthy human body?
Correct Answer: A. 120 days
The average lifespan of a healthy red blood cell is about 120 days. After this period, old RBCs are removed from circulation by the spleen and liver. The body continuously produces new RBCs in the bone marrow to replace them.
What is the fixed tenure of the Chairman of the Union Public Service Commission (UPSC)?
Correct Answer: B. 6 years
The UPSC Chairman holds office for a term of six years or until the age of 65. This tenure is constitutional and ensures the independence of the commission. The Chairman can resign by submitting a letter to the President of India.
Which type of mirror is commonly used as a rear-view mirror in vehicles?
Correct Answer: C. Convex mirror
Convex mirrors are used in vehicles because they provide a wider field of view. They always form an erect and diminished virtual image of the objects behind. This allows drivers to see a large area of traffic in a small mirror.
Which country is currently the world's largest producer of Gold?
Correct Answer: D. China
China is the leading gold-producing country in the world, surpassing South Africa and Australia. It has maintained its top position for over a decade through extensive mining operations. Gold is a major reserve asset for central banks globally.
Which British Viceroy enacted the controversial 'Vernacular Press Act' of 1878?
Correct Answer: A. Lord Lytton
Lord Lytton passed the Vernacular Press Act to suppress the freedom of Indian language newspapers. It allowed the government to confiscate printing presses if they published 'seditious' material. The act was later repealed by Lord Ripon in 1882.
Bandipur National Park is located in which of the following Indian states?
Correct Answer: B. Karnataka
Bandipur National Park is situated in the Chamarajanagar district of Karnataka. It was established as a tiger reserve under Project Tiger in 1973. It forms a part of the Nilgiri Biosphere Reserve along with neighboring parks.
The alloy 'Brass' is a combination of which two metals?
Correct Answer: C. Copper and Zinc
Brass is an alloy made primarily of Copper (Cu) and Zinc (Zn). It is highly valued for its gold-like appearance and acoustic properties in musical instruments. It is more durable and corrosion-resistant than pure copper.
Who was the first Indian citizen to win the Nobel Prize in any category?
Correct Answer: D. Rabindranath Tagore
Rabindranath Tagore won the Nobel Prize in Literature in 1913 for his work 'Gitanjali'. He was the first non-European to be awarded this prestigious international honor. Tagore is also the author of India's national anthem.
What is the SI unit of the Power of a Lens?
Correct Answer: A. Dioptre
The Dioptre is the unit used to measure the optical power of a lens or curved mirror. It is equal to the reciprocal of the focal length measured in meters. A positive value indicates a converging lens, while a negative value indicates a diverging lens.
In which year was the Second Battle of Tarain fought between Prithviraj Chauhan and Muhammad Ghori?
Correct Answer: B. 1192
The Second Battle of Tarain took place in 1192, following Ghori's defeat in the first battle. This time, Muhammad Ghori defeated Prithviraj Chauhan, leading to the establishment of Muslim rule. The battle changed the course of Indian history significantly.
The concept of 'Single Citizenship' in the Indian Constitution was borrowed from which country?
Correct Answer: C. Britain
India borrowed the concept of single citizenship from Britain (the United Kingdom). In the British model, all citizens owe allegiance to the national government and not to individual states. India follows a similar system where every citizen is a citizen of India and not separately of any individual state.
In which state is the 'Lonar Lake', a unique saline lake formed by a meteorite impact, located?
Correct Answer: D. Maharashtra
Lonar Lake is a notified National Geo-heritage Monument located in Buldhana, Maharashtra. It was created by a meteorite impact during the Pleistocene Epoch. The lake is alkaline and saline, making it a subject of scientific research.
Where is the headquarters of the International Monetary Fund (IMF) located?
Correct Answer: A. Washington D.C.
The IMF headquarters is situated in Washington D.C., United States. It was established in 1944 following the Bretton Woods Conference to foster global monetary cooperation. It works to stabilize exchange rates and provide financial assistance to member nations.
On which part of the human eye is the image of an object formed?
Correct Answer: B. Retina
The retina is the light-sensitive innermost layer of the human eye. It acts like a film in a camera where a real and inverted image is formed. Nerve impulses are then sent to the brain via the optic nerve.
Which gas is the main component of Liquefied Petroleum Gas (LPG)?
Correct Answer: C. Butane
Butane is the primary constituent of LPG used for domestic heating and cooking. It is a flammable hydrocarbon gas that is easily liquefied under pressure. A small amount of ethyl mercaptan is added to help detect gas leaks.
Who was the founder of the 'Satyashodhak Samaj' in Maharashtra?
Correct Answer: D. Jyotiba Phule
Jyotiba Phule founded the Satyashodhak Samaj in 1873 to work for the upliftment of lower castes. He advocated for social equality and the education of women and oppressed classes. His wife, Savitribai Phule, was also a pioneering educator.
The Speaker of the Lok Sabha submits his resignation letter to whom?
Correct Answer: A. Deputy Speaker of Lok Sabha
The Speaker can resign from office by writing to the Deputy Speaker of the Lok Sabha. Similarly, the Deputy Speaker submits his resignation to the Speaker. This procedure is defined to maintain the internal autonomy of the House.
The deficiency of which vitamin causes the disease 'Rickets' in children?
Correct Answer: B. Vitamin D
Rickets is a skeletal disorder caused by a lack of Vitamin D, calcium, or phosphate. It results in soft and weak bones, leading to deformities like bowed legs. Sunlight is a natural source that helps the body synthesize this vitamin.
What is the SI unit of Acceleration?
Correct Answer: C. m/s^2
Acceleration is defined as the rate of change of velocity per unit of time. Its SI unit is meters per second squared, written as $m/s^2$. It is a vector quantity because it involves both magnitude and direction.
On which river is the 'Jog Falls', one of the highest waterfalls in India, located?
Correct Answer: D. Sharavati
Jog Falls is created by the Sharavati River dropping from a height of 253 meters in Karnataka. It is also known as Gerosoppa Falls or Jogada Gundi. It is a major tourist attraction and a source of hydroelectric power.
In India, National Youth Day is celebrated on January 12 to commemorate the birth anniversary of whom?
Correct Answer: A. Swami Vivekananda
National Youth Day is observed on January 12 to honor the teachings of Swami Vivekananda. He was a key figure in introducing Indian philosophies to the Western world. The government declared this day in 1984 to inspire the youth of India.
According to Article 1 of the Indian Constitution, India is defined as what?
Correct Answer: B. A Union of States
Article 1 describes India, that is Bharat, as a 'Union of States'. This means the states have no right to secede from the country. It highlights the indestructible nature of the Indian Union despite its federal structure.
'Galena' is the primary mineral ore of which of the following metals?
Correct Answer: C. Lead
Galena is the most important ore of Lead (Pb) and is chemically known as Lead Sulfide. it often contains silver as an impurity and is found in hydrothermal veins. Lead is widely used in making batteries and radiation shielding.
The 'Chauri Chaura' incident, which led to the suspension of the Non-Cooperation Movement, occurred in which year?
Correct Answer: D. 1922
The Chauri Chaura incident took place on February 4, 1922, in the Gorakhpur district. A large group of protestors clashed with police, resulting in the death of 22 policemen. Disturbed by the violence, Mahatma Gandhi immediately called off the Non-Cooperation Movement.