Energy Requirements | MCQs

Explanation

Children aged 12 to 14 years typically need 2000–2400 calories daily, depending on gender and activity level.

This supports their growth, development, and energy needs.

Explanation

Carbohydrates provide quick and sustained energy, essential for endurance activities.

They help replenish glycogen stores, preventing fatigue during long-distance running.

Explanation

To boil 1 liter of water from 15°C to 100°C, the energy required is:

Q = mcΔT

= 1 kg × 4.18 kJ/kg°C × (100°C - 15°C)

= 1 × 4.18 × 85

= 355 kJ