Which vitamin deficiency causes pellagra characterised by dermatitis diarrhoea and dementia?

Which modern lighting technology is significantly more energy efficient than traditional incandescent bulbs?

Which part of the human eye controls the amount of light entering it?

Which common everyday substance is classified as a strong acid frequently used in car batteries?

Which type of immunity is passed from mother to infant through breast milk or placental transfer?

Which scientist is known as the father of modern genetics for his work on pea plant inheritance?

Which fluid lubricates joints and reduces friction between bones during movement?

Which preservation technique uses controlled heating to kill harmful microorganisms in liquids like milk?

Which scientific instrument is used to measure very small distances such as the diameter of a wire or thickness of a sheet?

Which everyday device uses a small magnifying lens system to examine tiny objects not visible to the naked eye?

Which B vitamin deficiency commonly causes the disease beriberi affecting the nervous and cardiovascular systems?