RRB Group D — Set 19
40 questions
What is the chemical formula of Heavy Water?
Correct Answer: A. D2O
The chemical formula of Heavy Water is D2O (deuterium oxide), where D represents deuterium atoms instead of regular hydrogen. D2O is formed when both hydrogen atoms in a water molecule are replaced by deuterium (D), an isotope with one proton and one neutron. Heavy water D2O is used as a moderator in CANDU nuclear reactors because it slows neutrons. D2O is about 10.6% denser than ordinary H2O water.
Which is the highest mountain peak in South India?
Correct Answer: B. Anamudi
Anamudi is the highest peak in the Western Ghats and South India. It is located in the Idukki district of Kerala. The height of this peak is approximately 2,695 meters.
Which article of the Indian Constitution is called the 'Heart and Soul' of the Constitution?
Correct Answer: C. Article 32
Article 32 provides the right to constitutional remedies for the enforcement of fundamental rights. Dr. B.R. Ambedkar described it as the heart and soul of the Constitution. It allows citizens to move the Supreme Court for protection of their rights.
The first Five Year Plan of India gave priority to which sector?
Correct Answer: D. Agriculture
The first Five Year Plan was launched in 1951 with a focus on agriculture. It was based on the Harrod-Domar model of economic growth. This plan successfully increased food grain production in the country.
Which city is the capital of Australia?
Correct Answer: A. Canberra
Canberra was chosen as the capital as a compromise between Sydney and Melbourne. It is the largest inland city in Australia. The city was planned specifically to serve as the nation's capital.
Which type of lens is used to correct Myopia (near-sightedness)?
Correct Answer: B. Concave lens
A concave lens is used to diverge light rays before they reach the eye lens. This helps in forming a clear image on the retina for distant objects. Myopia is a condition where a person cannot see far-off objects clearly.
What is the chemical formula for Bleaching Powder?
Correct Answer: C. CaOCl2
CaOCl2 is the correct answer to this question. This is an important fact from the General Knowledge and Current Affairs syllabus frequently tested in Indian competitive examinations such as SSC CGL, RRB NTPC, and state-level PSC exams. A thorough understanding of CaOCl2 and related topics will help candidates score well in the GK section. Regular revision of such key facts is highly recommended for exam preparation.
What is the retirement age of a judge of the Supreme Court of India?
Correct Answer: D. 65 years
Judges of the Supreme Court hold office until they reach the age of 65. This age limit is specified under Article 124 of the Constitution. High Court judges retire at a slightly lower age of 62 years.
Who was the founder of the religion 'Din-i-Ilahi'?
Correct Answer: A. Akbar
Akbar introduced Din-i-Ilahi in 1582 to merge elements of different religions. It was based on the concept of universal peace and tolerance. Birbal was the first and only Hindu to accept this faith.
The intensity of sound is measured in which unit?
Correct Answer: B. Decibel
The decibel is a logarithmic unit used to express the intensity of sound. It is named after Alexander Graham Bell. Normal human conversation is usually around 60 decibels.
The Indira Gandhi Canal gets its water from which river?
Correct Answer: C. Sutlej
The canal originates from the Harike Barrage at the confluence of Sutlej and Beas. It is the longest canal in India providing water to the Rajasthan desert. It has significantly helped in greening the dry regions of western India.
Who was the first woman Prime Minister of India?
Correct Answer: D. Indira Gandhi
Indira Gandhi served as the Prime Minister of India for three consecutive terms. She was the daughter of the first Prime Minister, Jawaharlal Nehru. She was posthumously awarded the Bharat Ratna in 1971.
Which article of the Indian Constitution deals with the Election Commission?
Correct Answer: A. Article 324
Article 324 provides for the power of direction and control of elections in India. The Election Commission is an independent constitutional body. It ensures the conduct of free and fair elections across the country.
Which of the following metals remains in liquid state at room temperature?
Correct Answer: B. Mercury
Mercury is a unique metal that does not solidify at normal room temperature. It is widely used in thermometers because of its high coefficient of expansion. Its chemical symbol is Hg and its atomic number is 80.
The famous temples of Khajuraho were built by the rulers of which dynasty?
Correct Answer: C. Chandela
The Chandela dynasty built these temples between 950 and 1050 AD. These temples are famous for their nagara-style architecture and erotic sculptures. They are located in the Chhatarpur district of Madhya Pradesh.
Which is the largest planet in our solar system?
Correct Answer: D. Jupiter
Jupiter is a gas giant and the most massive planet in the solar system. It is more than twice as massive as all other planets combined. It is known for its Great Red Spot and numerous moons.
What is the normal temperature of the human body on the Celsius scale?
Correct Answer: A. 37°C
The normal body temperature of a healthy human adult is 37 degrees Celsius (98.6°F). This temperature is maintained by the body's thermoregulatory system. A temperature above 37.5°C is generally considered a fever. The hypothalamus in the brain acts as the body's thermostat to regulate this temperature.
The 'Objective Resolution' which formed the basis of the Preamble was moved by whom?
Correct Answer: B. Jawaharlal Nehru
Jawaharlal Nehru moved the Objective Resolution in the Constituent Assembly in 1946. It outlined the guiding principles and philosophy of the Indian Constitution. This resolution eventually became the Preamble of the Constitution.
In which year was the Reserve Bank of India (RBI) established?
Correct Answer: C. 1935
The RBI was established on April 1, 1935, under the Reserve Bank of India Act. It was originally set up as a private shareholders' bank. It was later nationalized in 1949 after India's independence.
Which acid is found in Vinegar?
Correct Answer: D. Acetic Acid
Acetic acid gives vinegar its characteristic sour taste and pungent smell. It is produced through the fermentation of ethanol by acetic acid bacteria. The chemical formula for acetic acid is CH3COOH.
Who introduced the Permanent Settlement system of land revenue in Bengal?
Correct Answer: A. Lord Cornwallis
Lord Cornwallis introduced the Permanent Settlement in 1793. This system fixed the land revenue to be paid by zamindars to the British. It aimed to create a class of loyal landlords in India.
Which Indian state has the lowest population density according to the 2011 Census?
Correct Answer: B. Arunachal Pradesh
Arunachal Pradesh has a population density of only 17 persons per square kilometer. This is due to its vast hilly terrain and dense forest cover. Delhi has the highest population density among all Union Territories.
Ustad Bismillah Khan was a famous master of which musical instrument?
Correct Answer: C. Shehnai
Bismillah Khan is credited with popularizing the shehnai as a concert instrument. He was awarded the Bharat Ratna in 2001 for his contribution to music. He performed at the Red Fort on the eve of India's independence.
Which blood group is known as the 'Universal Recipient'?
Correct Answer: D. AB positive
AB positive individuals can receive blood from any blood group. This is because their plasma does not contain any anti-A or anti-B antibodies. The presence of Rh factor makes them universal recipients.
What is the normal tenure of a member of the Lok Sabha?
Correct Answer: A. 5 years
The Lok Sabha is the lower house of Parliament and its members serve for 5 years. However, it can be dissolved earlier by the President of India. During an emergency, this term can be extended by one year.
What is the approximate escape velocity of an object from Earth's surface?
Correct Answer: B. 11.2 km/s
Escape velocity is the minimum speed needed for an object to break free from gravity. For Earth, this value is approximately 11.2 kilometers per second. This speed is independent of the mass of the escaping object.
In which year did Mahatma Gandhi attend the Second Round Table Conference?
Correct Answer: C. 1931
Mahatma Gandhi attended the Second Round Table Conference in London in 1931. He went to London in 1931 as the sole representative of the Indian National Congress following the Gandhi-Irwin Pact. The 1931 conference was the only Round Table Conference that Gandhi attended. Despite his participation in 1931, the conference failed to reach a satisfactory agreement on communal representation.
In which state is the Lonar Lake, a meteorite impact crater, located?
Correct Answer: D. Maharashtra
Lonar Lake is a saline and alkaline water body formed by a meteorite hit. It is located in the Buldhana district of Maharashtra. It is a notified National Geo-heritage monument in India.
When is the International Day of Yoga celebrated every year?
Correct Answer: A. June 21
The first International Yoga Day was observed globally in 2015. June 21 was chosen because it is the longest day of the year in the Northern Hemisphere. This day promotes the health benefits of practicing yoga.
Which part of the human brain is responsible for maintaining body balance and posture?
Correct Answer: B. Cerebellum
The cerebellum is located at the back of the brain and coordinates muscle movements. It ensures that complex physical activities are performed smoothly. Damage to this part can cause difficulty in walking and standing.
Which article of the Indian Constitution provides for the Finance Commission?
Correct Answer: C. Article 280
The Finance Commission is constituted by the President every five years. It recommends the distribution of tax revenues between the Center and the States. Article 280 defines its composition and functions.
The 'Blue Revolution' in India is related to the production of which commodity?
Correct Answer: D. Fish
The Blue Revolution focuses on increasing fish production and improving aquaculture. It was launched during the 7th Five Year Plan in India. It aims to boost the income of fishermen and promote exports.
Who was the founder of the 'Arya Samaj'?
Correct Answer: A. Swami Dayanand Saraswati
Swami Dayanand Saraswati founded the Arya Samaj in 1875 in Bombay. He gave the famous slogan 'Go back to the Vedas'. He also wrote the influential book titled Satyarth Prakash.
Which of the following non-metals is a good conductor of electricity?
Correct Answer: B. Graphite
Graphite is an allotrope of carbon that has free electrons to carry current. It is used to make electrodes in batteries and as a dry lubricant. Unlike graphite, diamond is a poor conductor of electricity.
Which Indian territory is the largest producer of Saffron?
Correct Answer: C. Jammu & Kashmir
The Pampore region in Jammu & Kashmir is famous for its high-quality saffron. Saffron is often referred to as 'Red Gold' due to its high value. It is cultivated in the fertile karewa soil of the valley.
What is the official currency of China?
Correct Answer: D. Renminbi
Renminbi is the official name of the Chinese currency, while Yuan is its basic unit. It is issued by the People's Bank of China. It is one of the world's most used reserve currencies.
The scientific study of birds is known as ______.?
Correct Answer: A. Ornithology
Ornithology is the branch of zoology that focuses on the study of birds. It involves researching their behavior, physiology, and habitats. Dr. Salim Ali is known as the Birdman of India.
The 'Right to Property' in India is currently a ______.?
Correct Answer: B. Legal Right
The 44th Amendment Act of 1978 removed property from the list of fundamental rights. It was then made a legal right under Article 300A of the Constitution. Now, citizens cannot move the court directly for its violation as a fundamental right.
In which year was the First Battle of Tarain fought?
Correct Answer: C. 1191
The First Battle of Tarain was fought in 1191 between Prithviraj Chauhan, the Rajput ruler of Ajmer and Delhi, and Muhammad Ghori. In 1191, Prithviraj Chauhan emerged victorious and even captured Muhammad Ghori, but released him as per Rajput tradition. However, Ghori returned the following year and defeated Prithviraj in the Second Battle of Tarain in 1192. The First Battle of Tarain (1191) is considered one of the most significant battles in Indian history.
Which of the following elements has the highest density?
Correct Answer: D. Osmium
Osmium is the densest naturally occurring element found on Earth. It is a hard, brittle, bluish-white transition metal in the platinum group. It is twice as dense as lead and much denser than iron.