RRB Group D — Set 11
40 questions
Which of the following mirrors is commonly used as a rear-view mirror in vehicles?
Correct Answer: A. Convex mirror
Convex mirrors provide a wider field of view for drivers. They always form a diminished and erect image of the objects behind. This helps in monitoring traffic safely across a larger area.
What is the primary constituent of Biogas?
Correct Answer: B. Methane
Methane is the main component of Biogas, usually comprising 50-75% of it. It is produced by the anaerobic decomposition of organic matter. It is a clean and renewable source of energy.
Which Indian state is the leading producer of Rubber?
Correct Answer: C. Kerala
Kerala accounts for nearly 75% of the total natural rubber production in India. The humid tropical climate of the state is ideal for rubber plantations. India is among the top natural rubber producers globally.
Who was the first Indian to win a Nobel Prize?
Correct Answer: D. Rabindranath Tagore
Rabindranath Tagore won the Nobel Prize in Literature in 1913. He received this honor for his collection of poems titled 'Gitanjali'. He was the first non-European to win a Nobel Prize.
Which instrument is used to measure Atmospheric Pressure?
Correct Answer: A. Barometer
A barometer is used to measure the pressure of the atmosphere. Rapid changes in atmospheric pressure are used to predict weather changes. It was invented by Evangelista Torricelli in 1643.
Which fundamental right was described by Dr. B.R. Ambedkar as the 'Heart and Soul of the Constitution'?
Correct Answer: B. Right to Constitutional Remedies
The Right to Constitutional Remedies is mentioned under Article 32. It allows citizens to move the Supreme Court for the enforcement of fundamental rights. Dr. Ambedkar considered it the most important article.
Which city is known as the 'Electronic City of India'?
Correct Answer: C. Bengaluru
Bengaluru is widely regarded as the Electronic City or Silicon Valley of India. It is a major hub for information technology and electronic industries. Many global tech giants have their Indian headquarters here.
Which chemical is used for the artificial ripening of fruits?
Correct Answer: D. Calcium Carbide
Calcium Carbide is commonly used for artificial ripening as it produces acetylene gas. Acetylene mimics the action of ethylene, which is a natural ripening hormone. However, its use is restricted due to health concerns.
Who was the last Governor-General of free India?
Correct Answer: A. C. Rajagopalachari
C. Rajagopalachari served as the last Governor-General of India before it became a republic. He was the only Indian to hold this prestigious position. He was also a recipient of the Bharat Ratna award.
Which of the following is a Kharif crop?
Correct Answer: B. Rice
Rice is a major Kharif crop grown during the monsoon season. These crops require high temperature and plenty of rainfall. They are usually sown in June-July and harvested in September-October.
In which state is the Sun Temple of Konark located?
Correct Answer: C. Odisha
The Sun Temple of Konark is located in the state of Odisha. It was built in the 13th century by King Narasimhadeva I of the Eastern Ganga Dynasty. It is designed in the shape of a colossal chariot.
What is the common name of Sodium Bicarbonate?
Correct Answer: D. Baking Soda
Sodium Bicarbonate is commonly known as Baking Soda. Its chemical formula is NaHCO₃ and it is widely used in cooking. It acts as a leavening agent by releasing carbon dioxide.
Which is the smallest state in India by area?
Correct Answer: A. Goa
Goa is the smallest state in India covering an area of approximately 3,702 sq km. It is located on the western coast of the country in the Konkan region. Panaji is the capital city of this state.
Who was the first woman to climb Mount Everest?
Correct Answer: B. Junko Tabei
Junko Tabei, a Japanese mountaineer, became the first woman to reach the summit in 1975. She was also the first woman to ascend the Seven Summits. Bachendri Pal was the first Indian woman to achieve this feat.
Which artery carries deoxygenated blood from the heart to the lungs?
Correct Answer: C. Pulmonary Artery
The Pulmonary Artery is the only artery in the body that carries deoxygenated blood. It transports blood to the lungs for oxygenation. Most other arteries carry oxygen-rich blood away from the heart.
In which layer of the atmosphere do most weather phenomena occur?
Correct Answer: D. Troposphere
The Troposphere is the lowest layer of the Earth's atmosphere. It contains about 75% of the atmosphere's mass and 99% of its water vapor. Almost all clouds and weather events happen in this layer.
Who founded the 'Swaraj Party' in 1923?
Correct Answer: A. C.R. Das and Motilal Nehru
The Swaraj Party was established by Chittaranjan Das and Motilal Nehru. They sought greater self-government and political freedom from British rule. It was formed after the suspension of the Non-Cooperation Movement.
Which deficiency causes the disease 'Goitre'?
Correct Answer: B. Iodine
Goitre is caused by a deficiency of Iodine in the diet. It results in the abnormal enlargement of the thyroid gland located in the neck. Iodized salt is a common way to prevent this condition.
Which is the highest civilian award in India?
Correct Answer: C. Bharat Ratna
Bharat Ratna is the highest civilian award of the Republic of India. It is awarded for exceptional service in fields like arts, literature, and science. The award was instituted in the year 1954.
Which component of the computer is known as its 'Brain'?
Correct Answer: D. CPU
The CPU or Central Processing Unit is called the brain of the computer. It performs all types of data processing operations and controls all parts. It consists of the ALU and the Control Unit.
Which river is known as the 'Sorrow of Bihar'?
Correct Answer: A. Kosi
The Kosi River is known as the Sorrow of Bihar due to its frequent and devastating floods. It often changes its course, affecting thousands of people in the plains. It is a major tributary of the Ganga.
What is the chemical symbol for Gold?
Correct Answer: B. Au
The chemical symbol for Gold is Au, derived from the Latin word 'Aurum'. It is a highly valued noble metal known for its luster and ductility. Gold is widely used in jewelry and electronics.
Which Schedule of the Indian Constitution contains the list of official languages?
Correct Answer: C. Eighth Schedule
The Eighth Schedule of the Indian Constitution lists the official languages. Currently, there are 22 languages recognized under this schedule. It initially had 14 languages when the Constitution was enacted.
Who wrote the famous book 'The Discovery of India'?
Correct Answer: D. Jawaharlal Nehru
Jawaharlal Nehru wrote 'The Discovery of India' while he was imprisoned at Ahmednagar Fort. The book provides a deep analysis of Indian history, culture, and philosophy. Nehru was the first Prime Minister of independent India.
Which planet is known as 'Earth's Twin' due to its similar size and mass?
Correct Answer: A. Venus
Venus is often called Earth's twin because of its similar size, mass, and composition. However, it has a very thick, toxic atmosphere and surface temperatures hot enough to melt lead. It is the brightest planet in the sky.
Which acid is present in the sting of an ant?
Correct Answer: B. Methanoic Acid
Ant stings contain Methanoic Acid, which is also commonly known as Formic Acid. It causes the sharp pain and swelling associated with an ant bite. Neutralizing it with a mild base like baking soda can provide relief.
Which part of the eye is responsible for the color of one's eyes?
Correct Answer: C. Iris
The Iris is the colored part of the eye that surrounds the pupil. It controls the amount of light entering the eye by adjusting the size of the pupil. Eye color is determined by the amount of pigment in the iris.
Who among the following started the Shaka Era (Shaka Samvat)?
Correct Answer: D. Kanishka
The Shaka Era was started by the Kushan emperor Kanishka in 78 AD. It is the basis for the Indian National Calendar. Kanishka was a great patron of Buddhism and organized the Fourth Buddhist Council.
Which is the largest fresh water lake in India?
Correct Answer: A. Wular Lake
Wular Lake in Jammu and Kashmir is the largest freshwater lake in India. It is fed by the Jhelum River and its size varies seasonally. Chilika Lake, on the other hand, is the largest brackish water lagoon.
Which device converts Chemical Energy into Electrical Energy?
Correct Answer: B. Battery
A battery or electrochemical cell converts stored chemical energy into electrical energy. It consists of one or more cells where chemical reactions occur to produce a flow of electrons. Alessandro Volta invented the first true battery.
What is the minimum age to vote in India?
Correct Answer: C. 18 years
The minimum voting age in India is 18 years. It was reduced from 21 to 18 by the 61st Constitutional Amendment Act in 1988. This ensures greater youth participation in the democratic process.
Who is known as the 'Grand Old Man of India'?
Correct Answer: D. Dadabhai Naoroji
Dadabhai Naoroji is known as the Grand Old Man of India for his immense contribution to the freedom struggle. He was the first Indian to be elected to the British House of Commons. He authored the book 'Poverty and Un-British Rule in India'.
Which of the following is used in pencils?
Correct Answer: A. Graphite
Graphite is used in pencils because of its ability to leave marks on paper. It is an allotrope of carbon and is a good conductor of electricity. Graphite is mixed with clay to determine the hardness of the pencil lead.
In which city is the headquarters of the World Health Organization (WHO) located?
Correct Answer: B. Geneva
The headquarters of the WHO is located in Geneva, Switzerland. It was established on April 7, 1948, to coordinate international health efforts. This date is now celebrated annually as World Health Day.
What is the maximum number of members in the Rajya Sabha?
Correct Answer: C. 250
The maximum strength of the Rajya Sabha is fixed at 250 members. Out of these, 12 members are nominated by the President for their expertise in various fields. It is a permanent body and cannot be dissolved.
The Battle of Plassey was fought in which year?
Correct Answer: D. 1757
The Battle of Plassey took place in 1757 between the British East India Company and the Nawab of Bengal. Robert Clive led the British forces to victory. This battle established British political supremacy in India.
Which vitamin helps in the clotting of blood?
Correct Answer: A. Vitamin K
Vitamin K is essential for the process of blood coagulation or clotting. Deficiency of this vitamin can lead to excessive bleeding from minor wounds. Green leafy vegetables are a primary source of Vitamin K.
Which is the largest ocean in the world?
Correct Answer: B. Pacific Ocean
The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It covers about one-third of the Earth's total surface area. The Mariana Trench, the deepest point on Earth, is located here.
Who was the first President of Independent India?
Correct Answer: C. Dr. Rajendra Prasad
Dr. Rajendra Prasad was the first President of independent India. He served in this office for the longest duration from 1950 to 1962. He was also the President of the Constituent Assembly.
What is the boiling point of water at sea level?
Correct Answer: D. 100°C
The boiling point of pure water at standard atmospheric pressure is 100°C. At this temperature, the vapor pressure of the liquid equals the atmospheric pressure. The boiling point decreases at higher altitudes.