The skin has and needs natural oils. Why is it advisable to wear gloves while working with strong alkalis ?
(a) why do electricians wear rubber hand gloves while working with electricty? (b) what p.d. is needed to send a current of 6 A through an electrical appliance having a resistance of 40Ω ?
Why is it advised not to wear synthetic clothes while working in laboratory or kitchen? Name four synthetic fibres and mention their uses apart from their usage in clothes. [5 MARKS]