Industries

Proximity to major iron ore and coalfields of Karnataka

Step 1: The question asks us to identify the factor that is NOT responsible for Bengaluru's IT growth — this means we need to find the incorrect or irrelevant factor. Step 2: Bengaluru became an IT hub because of skilled labour, strong educational institutions, government support, mild climate, and presence of existing high-tech industries — all mentioned in the textbook. Step 3: Option A is valid — public sector units like BEL, HAL, ITI were set up in Bengaluru from the 1950s. Step 4: Option B is valid — a highly educated workforce in science and engineering is key for IT. Step 5: Option D is

Sulphur dioxide produced by combustion of fossil fuels

Step 1: The textbook specifically states that 'Sulphur dioxide produced by combustion of fossil fuels can be removed from gases by Flue Gas Sulphurisation method.' Step 2: Sulphur dioxide (SO₂) is formed when coal and other sulphur-containing fossil fuels are burned in factories. Step 3: Flue Gas Sulphurisation (FGS) is a process that removes SO₂ from exhaust gases (flue gases) before they are released into the atmosphere through chimneys. Step 4: Carbon monoxide, nitrogen oxide, and lead oxide are different pollutants with their own control methods — they are not removed by Flue Gas Sulphuris

To ensure a continuous and adequate supply of labour by providing housing and facilities to workers

Step 1: Iron and steel is a large-scale, capital-intensive industry that requires a huge and continuous workforce. Step 2: These plants are often located in areas far from large cities (e.g., Jamshedpur, Bhilai) where natural labour supply may not be readily available. Step 3: To attract and retain workers, the companies build entire townships with housing, schools, hospitals, and other amenities near the plant. Step 4: This ensures that the labour supply is stable and workers do not have to travel long distances — keeping production running smoothly. Step 5: Option A is incorrect because town

The Gulf Stream and the Labrador Current

Step 1: The textbook states that 'the convergence of the Gulf Stream and the Labrador current in this region increases productivity of fish' in the North West Atlantic. Step 2: The Gulf Stream is a warm ocean current flowing from the tropics northward, while the Labrador Current is a cold current flowing from the Arctic southward. Step 3: When warm and cold currents meet, they cause an upwelling of nutrient-rich water from the ocean floor. This upwelling supports the growth of plankton, which is the primary food for fish. Step 4: This makes the Grand Bank and Georges Bank in the North West Atl