Water shows convex meniscus in narrow ________ and _________ tubes.

1.	Water shows convex meniscus in narrow ________ and _________ tubes.
Answer» GLASS, plastic glass, wax COATED glass wax coated glass, plastic plastic, coloured glass Solution :In case of wax coated glass and plastic tube, cohesive FORCES are PREDOMINANT over adhesive forces and HENCE water shows convex meniscus in narrow wax coated glass tube and plastic tube.

Discussion