Mumbai-Maharashtra is the most important cotton manufacturing centre in India. Gujarat is the second largest producer of cotton textile in India and Ahmedabad is the largest centre. The other important cotton textile centres of Gujarat are Vadodara, Surat and Porbandar, etc.

Correct Option: D

Mumbai-Maharashtra is the most important cotton manufacturing centre in India. Gujarat is the second largest producer of cotton textile in India and Ahmedabad is the largest centre. The other important cotton textile centres of Gujarat are Vadodara, Surat and Porbandar, etc.

Coimbatore is the second largest city in the Indian state of Tamil Nadu and the 15th largest urban agglomeration in India with a metropolitan population of over 2 million. It is a major commercial centre and has often been referred to as the "Manchester of South India". It is an important textile, Industrial, Commercial, Information technology, and manufacturing hub of Tamil Nadu.

Correct Option: A

Coimbatore is the second largest city in the Indian state of Tamil Nadu and the 15th largest urban agglomeration in India with a metropolitan population of over 2 million. It is a major commercial centre and has often been referred to as the "Manchester of South India". It is an important textile, Industrial, Commercial, Information technology, and manufacturing hub of Tamil Nadu.

India, China, and Bangladesh are the three major producers in the cultivation or production of jute fibre. India has taken advantage of recent improvements in the cultivation of jute to become the largest producer or cultivator of jute in the world. Using advanced production techniques, India also has dominance over the worldwide jute products market. In terms of world export of jute fibre, Bangladesh's share is more than 70%, which makes Bangladesh the largest exporter of jute fibre in the world.

Correct Option: C

India, China, and Bangladesh are the three major producers in the cultivation or production of jute fibre. India has taken advantage of recent improvements in the cultivation of jute to become the largest producer or cultivator of jute in the world. Using advanced production techniques, India also has dominance over the worldwide jute products market. In terms of world export of jute fibre, Bangladesh's share is more than 70%, which makes Bangladesh the largest exporter of jute fibre in the world.

India produces an approximate 90 % of the world`s mica. It is an indispensable component of the electrical industry. India accounts for 60 % of mica embarking in international trade.

Correct Option: B

India produces an approximate 90 % of the world`s mica. It is an indispensable component of the electrical industry. India accounts for 60 % of mica embarking in international trade.

The Gujarat Refinery is an oil refinery located at Koyali (near Vadodara) in Gujarat, Western India. It is the largest refinery owned by Indian Oil Corporation.

Correct Option: A

The Gujarat Refinery is an oil refinery located at Koyali (near Vadodara) in Gujarat, Western India. It is the largest refinery owned by Indian Oil Corporation.