Consider the following statements : 1. Carbon fibres are used in the manufacture of components used in automobiles and aircrafts. 2. Carbon fibres once used cannot be recycled. Which of the statements given above is/are correct?

Describes the automobile industry and notes steel as the basic raw material used in the industry, implying vehicles rely on structural materials and material choice matters.

A student could combine this with knowledge that manufacturers sometimes substitute or supplement steel with lighter high-strength materials (e.g., composite fibres) to reduce weight.

Lists plastics and synthetic fibres among important manufacturing products, indicating the manufacturing sector commonly uses non-metal, fibre-based materials.

One could extend this pattern to infer that fibre-based reinforcements (including engineered fibres) are plausible choices for vehicle components where plastics/synthetics are used.

Shows natural fibres (sisal) are used as reinforcement in composite materials for manufacturing durable panels and industrial products.

From this example, a student can generalise that fibres (natural or engineered) are used to reinforce composites — making it reasonable to check whether high-performance fibres like carbon fibre are used similarly in auto parts.

Explains manufacturing covers a wide range from plastic toys to space vehicles, emphasising specialised materials and processes in producing components.

Knowing the diversity of manufacturing, a student could infer that specialised, high-performance materials (such as carbon-fibre composites) may be used in sectors requiring strength-to-weight advantages, like automobiles.