Choose the correct alternative from the following : - Assertion (A) : The use of chlorofluoro carbons is banned throughout the world nowadays. Reason (R) : These chemicals cause skin cancer.
Choose the correct alternative from the following : - Assertion (A) : In the upper course, the main work of the river is erosion. Reason (R) : River flows swiftly in the upper course.
Choose the correct alternative from the following : - Assertion (A) : The body of the fish is streamlined. Reason (R) : The streamlined body helps the fish to cut its way through the water.
Choose the correct alternative from the following : - Assertion (A) : When common salt is kept open, it absorbs moisture from the air. Reason (R) : Common salt contains magnesium chloride.