Which one of the following has the highest calorific value?
Iron rim is made slightly smaller than the wooden wheel. The rim is usually heated before fixing into the wooden wheel, because on heating the iron rim
Salt can be separated from its solution (salt dissolved in water), because
Four mixtures are given below
Which of these can be separated by the method of winnowing?
Which amongst the following methods would be most appropriate to separate grains from bundles of stalks?
Which of the following mixtures would you be able to separate using the method of filtration?
Which of the following materials is not lustrous?
An iron nail is kept in each of the following liquids. In which case would it lose its shine and appear dull?