You are provided with a glass stopper and a measuring cylinder. How will you proceed to find the density of stopper? Diagrams not required.

How can you decrease the average density of an object?

You are required to prepare lead sulphate from lead carbonate. Briefly explain how will you proceed ?

You are given a magnet. How will you use it to find north-south direction at a place ?

How will you find the direction of the vector product of two vectors ?

A stone has a mass of 108.5 g. When the stone is totally immersed in water contained in a measuring cylinder, it displaces water from "50 cm"^3 to 93 "cm"^3 . Find the density of the stone.

You are provided with solutions of sodium hydroxide and ammonium hydroxide. How would you identify each cation in the following pairs of cations which are provided in separate test tubes as solutions? Pb^(2+) and Ca^(2+)

You are provided with solutions of sodium hydroxide and ammonium hydroxide. How would you identify each cation in the following pairs of cations which are provided in separate test tubes as solutions? Pb^(2+) and Fe^(3+)

You are provided with solutions of sodium hydroxide and ammonium hydroxide. How would you identify each cation in the following pairs of cations which are provided in separate test tubes as solutions? Pb^(2+) and Fe^(3+)

You are provided with solutions of sodium hydroxide and ammonium hydroxide. How would you identify each cation in the following pairs of cations which are provided in separate test tubes as solutions? Zn^(2+) and Fe^(2+)

You are provided with solutions of sodium hydroxide and ammonium hydroxide. How would you identify each cation in the following pairs of cations which are provided in separate test tubes as solutions? Zn^(2+) and Fe^(3+)