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The correct answer is Option 4, i.e Lambda (λ).

• The wavelength, the distance between corresponding points of two consecutive waves. “Corresponding points” refers to two points or particles in the same phase—i.e., points that have completed identical fractions of their periodic motion.
• Wavelength is usually denoted by the Greek letter lambda (λ); it is equal to the speed (v) of a wave train in a medium divided by its frequency (f): λ = v/f.

The correct answer is Telangana.

Important Points

• Ramappa Temple, also known as the Rudreshwara temple, is a UNESCO World Heritage Site located in Telangana, India.
• Its construction started in the year 1213 CE by Recharla Rudra, a General of Kakatiya ruler Ganapati Deva 1199–1262.

Additional Information

• World Heritage Sites are some of the special places present in the world which are protected by the international body UNESCO.
• UNESCO celebrates 'World Heritage Day' every year on 18 April to create awareness among people about these places.
• According to the Union Ministry of Cultural Affairs, the total number of UNESCO World Heritage Sites in India is 40.
• Khangchendzonga National Park is the only Mixed UNESCO site in India.​

The correct answer is Deducted.

Key Points

Tax Deducted at Source

1. TDS stands for 'Tax Deducted at Source'.
2. It was introduced to collect tax at the source from where an individual's income is generated.
3. The government uses TDS as a tool to collect tax in order to minimize tax evasion by taxing the income (partially or wholly) at the time it is generated rather than at a later date.

The correct answer is Dadabhai Naoroji.

• Dadabhai Naoroji wrote the book "Poverty and Un-British Rule in India".

Key Points

• Dadabhai Naoroji (1825 AD-1917 AD):
• He was the first Indian to demand Swaraj in the Calcutta Session of INC, 1906.
• He was also known as the Indian Gladstone and Grand Old Man of India.
• He was the first Indian to be elected to the House of Commons on a Liberal Party ticket.
• He highlighted the draining of wealth from India by the British and its effect in his book Poverty and Un-British Rule in India (1901).

Additional Information

• Gopal Krishna Gokhale founded The Servants of India Society in 1905.
• He wrote Speeches of Gopal Krishna Gokhale.
• Bal Gangadhar Tilak authored books The Arctic Home of Vedas and Gita Rahasya.
• Atmaram Pandurang founded the Prarthna Samaj in 1867 AD.

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The correct answer is Akbar.

Key Points

• Din-i Ilahi “the religion of God,” was a system of religious beliefs introduced by the Mughal emperor Akbar in 1582 CE.
• His idea was to combine Islam and Hinduism into one faith, but also to add aspects of Christianity, Zoroastrianism and Jainism.
• He founded an academy, the Ibadat Khana, “the House of Worship,” in 1575, where representatives of all major faiths could meet to discuss questions of theology.
• Akbar was the 3^rd Mughal emperor of India.
• Akbar succeeded his father, Humayun, in 1556.
• The 13-year-old Akbar was enthroned by Bairam Khan and was proclaimed Shahanshah.
• Akbar was given the nickname 'the Great' because of his many accomplishments, among which, was his record of unbeaten military campaigns that established the Mughal rule in the Indian subcontinent.

Additional Information

• Muhammad Ghaznavi:
• Mahmud of Ghazni (971-1030) was the first sultan of the Ghaznavid dynasty in Afghanistan
• Humayun:
• He was, also called Naṣir al-Din Muḥammad, the second Mughal ruler of India, who was more an adventurer than a consolidator of his empire.
• The son and successor of Babur, who had founded the Mughal dynasty, Humayun ruled from 1530 to 1540 and again from 1555 to 1556.

The correct answer is ​National Farmers Day.

Key Points

• I ndia observes National Farmers Day or Kisan Diwas on December 23 every year.
• The day marks the birth anniversary of former Prime Minister Chaudhary Charan Singh.
• He served as the PM of India from July 28, 1979, to January 14, 1980.
• Shri Charan Singh was born in 1902 at Noorpur in Meerut district of Uttar Pradesh.
• He was a farmer leader.
• On December 23, 1978, he founded the Kisan Trust, aiming to educate the rural masses of India against injustice.

Additional Information 

Concept:

• Satellite: A satellite is an object that moves around a larger object. But usually when someone says "satellite," they are talking about a "man-made" satellite. Man-made satellites are machines made by people. These machines are launched into space and orbit Earth or another body in space. Ex - Moon, sputnik -1 etc.
• Natural Satellite: A natural satellite is an object that orbits a planet or other body larger than itself and which is not man-made. Ex- Earth has a moon as a natural satellite.

Explanation:

• Aryabhata was the first Indian satellite launched on 19 April 1975.
• It was named after Indian Mathematician and astronomer Aryabhata.
• It was built by ISRO and launched with Russian rocket launch vehicle Kosmos-3M

Important Points

• ISRO - Indian Space Research Organisation, Indian space agency develop Indian space programs.
• Founded - 1969
• Headquarter - Bangalore
• Chairman - S. Somanath

Additional InformationList of Important Indian satellites:

The correct answer is Malaria.

Important Points

• Malaria
• Malaria is caused by a protozoan parasite called Plasmodium.
• Carrier is a female anopheles mosquito.
• Affects the spleen organ.

Additional Information

• Cholera
• Cholera is caused by the bacteria Vibrio cholerae.
• Cause of disease is contaminated water/food.
• Diphtheria
• Diphtheria is caused by bacteria.
• Bacteria name Corynebacterium diphtheriae.
• Spread from person to person through sneezing and coughing.
• Pneumonia
• Pneumonia is an infection of the lungs caused by germs (fungi, bacteria, or viruses).
• It causes cough, fever, chest pain, problem in respiration.

• The National Savings Certificate (NSC) is a fixed income investment scheme that you can open with any post office branch. The scheme is a Government of India initiative. It is a savings bond that encourages subscribers – mainly small to mid-income investors – to invest while saving on income tax.
• A fixed-income instrument like Public Provident Fund and Post Office FDs, this scheme too is a low-risk fixed-income product. You can buy it from the nearest post office in your name, for a minor or with another adult as a joint account. NSC comes with a fixed maturity period of five years. There is no maximum limit on the purchase of NSCs, but only investments of up to Rs.1.5 lakh can earn you a tax break under Section 80C of the Income Tax Act. The certificates earn a fixed interest, which is currently at a rate of 7.0% per annum. The interest rate is revised on a regular basis by the government.
• NSC offers guaranteed interest and complete capital protection. However, like most fixed income schemes, they cannot deliver inflation-beating returns like tax-saving mutual funds and the National Pension System. The government has made NSC easily accessible for prospective investors by making it available in post office branches spread across the country.
• The government has promoted the National Savings Certificate as a savings scheme for individuals. Hence, Hindu Undivided Families (HUFs) and trusts cannot invest in it. Furthermore, even non-resident Indians (NRI) cannot purchase NSC certificates. The scheme is open only for individual Indian resident citizens

The correct answer is Delhi.

Key Points

• National Museum of India:
• The National Museum, New Delhi as we see it today in the majestic building on the corner of Janpath and Maulana Azad Road is the prime museum in the country. Hence, Option 4 is correct.
• The blueprint for establishing the National Museum in Delhi had been prepared by the Maurice Gwyer Committee set up by the Government of India in 1946.
• On the auspicious day of the 15^th August 1949, the National Museum was formally inaugurated by the Governor-General of India, Shri R.C. Rajagopalachari, and it was announced that till a permanent building for housing the National Museum was constructed, the Museum would continue to function in the Rashtrapati Bhawan.
• It continued to be looked after well by the Director-General of Archaeology until the Ministry of Education, the Government of India declared it a separate institution to grow in its collections that were sought painstakingly.
• It received several gifts but artifacts were collected mainly through its Art Purchase Committee.
• In the meanwhile, the foundation of the present building was laid by Pt. J.L. Nehru, Prime Minister of India, on the 12^th May 1955, and the new building where works of art were displayed elegantly on scientific lines, was handed over to Museum authorities in June 1960.
• The Museum was formally thrown open to the public on December 18, 1960. And it is now within the administrative control and fully financed by the Department of Culture, Ministry of Human Resource Development, Government of India.

Image of the Museum:

Additional Information

• Chennai:
• Located on the Bay of Bengal in eastern India, is the capital of the state of Tamil Nadu.
• The city is home to Fort St. George, built in 1644 and now a museum showcasing the city’s roots as a British military garrison and East India Company trading outpost, when it was called Madras.
• Religious sites include Kapaleeshwarar Temple, adorned with carved and painted gods, and St. Mary’s, a 17^th-century Anglican church.
• Bengaluru:
• Also called Bangalore is the capital of India's southern Karnataka state.
• The center of India's high-tech industry, the city is also known for its parks and nightlife.
• By Cubbon Park, Vidhana Soudha is a Neo-Dravidian legislative building.
• Former royal residences include 19^th-century Bangalore Palace, modeled after England’s Windsor Castle, and Tipu Sultan’s Summer Palace, an 18^th-century teak structure.
• Patna:
• It is an ancient city that sprawls along the south bank of the Ganges River in Bihar, northeast India.
• The state capital, it’s home to Bihar Museum, a contemporary landmark exhibiting bronze sculptures and old coins from the region.
• Nearby, Indo-Saracenic–style Patna Museum displays a casket believed to contain the Buddha’s ashes. Close to the river, the Golghar is a domed colonial granary overlooking the city.
• Delhi:
• India’s capital territory is a massive metropolitan area in the country’s north.
• In Old Delhi, a neighborhood dating to the 1600s, stands the imposing Mughal-era Red Fort, a symbol of India, and the sprawling Jama Masjid mosque, whose courtyard accommodates 25,000 people.
• Nearby is Chandni Chowk, a vibrant bazaar filled with food carts, sweets shops, and spice stalls.