The correct answer is (a) Cement industry.
Keymore is a town in the Indian state of Madhya Pradesh. It is located in the district of Raisen. The town is famous for its cement industry. The cement industry in Keymore is one of the largest in India. The industry employs a large number of people and contributes significantly to the economy of the town and the state.
The cement industry in Keymore is based on the limestone deposits in the area. The limestone is quarried and then crushed into small pieces. The crushed limestone is then mixed with other materials, such as clay and sand, to form a slurry. The slurry is then heated and then cooled to form cement clinker. The cement clinker is then ground into a fine powder to form cement.
The cement industry in Keymore is a major source of employment in the town. The industry employs a large number of people, both directly and indirectly. The industry also contributes significantly to the economy of the town and the state. The industry generates a large amount of revenue for the government and also provides a number of other benefits, such as infrastructure development and employment opportunities.
The cement industry in Keymore is a major contributor to the economy of the town and the state. The industry employs a large number of people and generates a large amount of revenue for the government. The industry also provides a number of other benefits, such as infrastructure development and employment opportunities.
The other options are incorrect because they are not related to the cement industry in Keymore.
(b) Paper industry: The paper industry is not a major industry in Keymore. There are a few paper mills in the town, but they are not as large or as important as the cement industry.
(c) Aluminium industry: The aluminium industry is not a major industry in Keymore. There are no aluminium smelters in the town.
(d) Automobile industry: The automobile industry is not a major industry in Keymore. There are no automobile manufacturing plants in the town.