Question : Iron and manganese present as pollutants in water can not be removed by ____.

Option 1: oxidation followed by settling and filtration

Option 2: chlorination

Option 3: ion exchange process

Option 4: lime soda process or manganese zeolite process

Question : Copper wires are generally used for electrical power transmission instead of iron wire because:

Option 1: Copper is cheaper than iron

Option 2: Copper is lighter than iron

Option 3: Copper is a good conductor of electricity than iron

Option 4: Copper can take higher power than iron

Question : Which is the first integrated steel plant in the public sector in India?

Option 1: The Visvesvaraya Iron and Steel Limited

Option 2: Rourkela Steel Plant

Option 3: The Salem Steel Plant

Option 4: Indian Iron and Steel Company

Question : Select the correct indirect form of the given sentence.

The teacher says, “Magnets attract objects made of iron.”

Option 1: The teacher says that magnets attract objects made of iron.

Option 2: The teacher says magnets attracts objects made of iron.

Option 3: The teacher said that magnets attracted objects made of iron.

Option 4: The teacher said that magnets were attracting objects made of iron.

Question : Where was the first iron and steel industry of India established ?

Option 1: Bhadravati

Option 2: Bhilai

Option 3: Jamshedpur

Option 4: Burnpur

Question : Identify the subsidiary of Steel Authority of India Limited ( SAIL) that is located along the Kolkata-Asansol railway line.

Option 1: ESL Steel Ltd. (ESL)

Option 2: Jindal Steel and Power Ltd. (JSPL)

Option 3: Indian Iron and Steel Company (IISCO)

Option 4: Tata Iron and Steel plant (TISCO)