₦airaland Forum

please i have register for waec and in my school we dnt really av laboratory nd am doing practical on physics,chemistry and biology.pls kindly help me with topics that practical questions are.av done dat of titration in chemistry and light refraction in physics including food test in biology.dat is all av known 4 nw.pls i nid it urgently.tanx

For physics, it's usually one question each from electricity, optics or sound, moment and elasticity/simple Harmonic Motion (I think you're to answer three questions or so)

Electricity, most of which centers around Ohms law
~potentiometer
~variable resistance
~meter bridge

Moment of a force with emphasis on balancing a meter rule and determining its weight (hope you're good with the calculations as this would help a great deal)

Sound - sonometer experiment

Elasticity/simple Harmonic motion
~Mass on a spring (mainly related to Hooke's law)
~Simple pendulum

I think there's a practical outline that waec makes available to schools before the commencement of the exam, it contains clues about the questions that'll appear, you can simply ask your teacher or watch closely the topics he's repeatedly teaching.
Happy reading.