Which one amongst the following is the oldest production unit? [#1007]

The Digboi Refinery in Assam is the oldest refinery in India, having been commissioned on December 11, 1901. It was built by the British and is also Asia's first refinery. The refinery is known as the birthplace of the Indian oil industry. Oil was first discovered in 1867 while laying a railway line in the Digboi area.

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The Digboi Refinery in Assam is the oldest refinery in India, having been commissioned on December 11, 1901. It was built by the British and is also Asia's first refinery. The refinery is known as the birthplace of the Indian oil industry. Oil was first discovered in 1867 while laying a railway line in the Digboi area.

Narakasura, a prominent figure in Hindu mythology, is believed to have ruled the ancient kingdom of Pragjyotisha. This kingdom is generally associated with the region that comprises modern-day Assam. His capital city was Pragjyotishapura, often identified with present-day Guwahati. It's important to remember that Narakasura's story is part of mythology and lacks definitive historical proof.

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Narakasura, a prominent figure in Hindu mythology, is believed to have ruled the ancient kingdom of Pragjyotisha. This kingdom is generally associated with the region that comprises modern-day Assam. His capital city was Pragjyotishapura, often identified with present-day Guwahati. It's important to remember that Narakasura's story is part of mythology and lacks definitive historical proof.

The Hawa Mahal is a palace in the city of Jaipur, Rajasthan, India. Built from red and pink sandstone, it is on the edge of the City Palace, Jaipur, and extends to the Zenana, or women's chambers. The structure was built in 1799 by the Maharaja Sawai Pratap Singh, grandson of Maharaja Sawai Jai Singh, the founder of the city of Jhunjhunu in the state of Rajasthan.

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The Hawa Mahal is a palace in the city of Jaipur, Rajasthan, India. Built from red and pink sandstone, it is on the edge of the City Palace, Jaipur, and extends to the Zenana, or women's chambers. The structure was built in 1799 by the Maharaja Sawai Pratap Singh, grandson of Maharaja Sawai Jai Singh, the founder of the city of Jhunjhunu in the state of Rajasthan.

Godaan is a famous Hindi novel by Munshi Premchand. It was first published in 1936 and is considered one of the greatest Hindi novels of modern Indian literature.

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Godaan is a famous Hindi novel by Munshi Premchand. It was first published in 1936 and is considered one of the greatest Hindi novels of modern Indian literature.

Agra is a city on the banks of the river Yamuna in the northern state of Uttar Pradesh, India. Agra is known for Mughal Architecture Taj Mahal which was built in 1653 by Shah Jahan. It is one of the seven wonders of the world and is appraised to be the most popular tourist attraction in the country.

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Agra is a city on the banks of the river Yamuna in the northern state of Uttar Pradesh, India. Agra is known for Mughal Architecture Taj Mahal which was built in 1653 by Shah Jahan. It is one of the seven wonders of the world and is appraised to be the most popular tourist attraction in the country.

National Institute of Homoeopathy is located in the most planned and developed area of Salt Lake city of Kolkata. It is an autonomous organisation under the Ministry of Ayush, Government of India. National Institute of Homeopathy was established on 10 December 1975 as an autonomous organisation under the Ministry of Health and Family Welfare. It was located at Amherst Street, Kolkata and later shifted to the present location.

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National Institute of Homoeopathy is located in the most planned and developed area of Salt Lake city of Kolkata. It is an autonomous organisation under the Ministry of Ayush, Government of India. National Institute of Homeopathy was established on 10 December 1975 as an autonomous organisation under the Ministry of Health and Family Welfare. It was located at Amherst Street, Kolkata and later shifted to the present location.

Lord Cornwallis

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Lord Cornwallis

The Ahoms established their final capital at Rangpur (present-day Jorhat). This city remained the capital of the Ahom kingdom until its downfall in the 18th century.

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The Ahoms established their final capital at Rangpur (present-day Jorhat). This city remained the capital of the Ahom kingdom until its downfall in the 18th century.

The Supreme Court of India appointed its first woman judge, M. Fathima Beevi, on October 6, 1989. Beevi served until her retirement in 1992. She was also the first Muslim woman to serve in the higher judiciary.

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The Supreme Court of India appointed its first woman judge, M. Fathima Beevi, on October 6, 1989. Beevi served until her retirement in 1992. She was also the first Muslim woman to serve in the higher judiciary.

The Assam Railways and Trading Company Limited (AR&T Co. Ltd.) first discovered crude oil in Assam in September 1889. The company dug the first well in the Digboi field.

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The Assam Railways and Trading Company Limited (AR&T Co. Ltd.) first discovered crude oil in Assam in September 1889. The company dug the first well in the Digboi field.

Kanaklata Barua is considered the first martyr of the 1942 Quit India Movement in Assam. The Indian Imperial Police shot and killed Barua, an 18-year-old AISF leader and independence activist, while she led a procession carrying the national flag. She's also known as "Birbala" and "Shaheed" (martyr).

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Kanaklata Barua is considered the first martyr of the 1942 Quit India Movement in Assam. The Indian Imperial Police shot and killed Barua, an 18-year-old AISF leader and independence activist, while she led a procession carrying the national flag. She's also known as "Birbala" and "Shaheed" (martyr).