Exploring the Investigative World of Science — Science STD 8 — Question

Which synthetic fibre feels like wool and used as a substitute for wool?

Name any two organelles present in a cell.

Sound can travel through vacuum. Is it correct?

Do liquids also conduct electricity?

Which of the two does not have a true nucleus: prokaryotic cell or eukaryotic cell?

Name the non-metal used to make purple coloured solution which is applied on cuts and wounds as an antiseptic.

State whether the following are True or False.Bathing outdoors should be avoided during thunderstorm.

What conclusion do you get from the observation that a fountain of water is created at the leaking joint of pipes of the main water supply line?

Why does a matchstick catch fire when it is rubbed on rough surface?

State the age at which adolescence usually begins and the age up to which it lasts.