Is a screen needed for shadow formation ?Which type of material, act as screen for shadow formation ?Which type of material, act as screen for shadows in daily life?

Which type of drugs act as mood elevators?

In which type of material the magnetic susceptibility does not depend on temperature?

Which type of cell division is required for growth and repair of body and which type is involved in formation of gametes?

Which type of garbage has increased with the change in packaging material?

Which type tool is needed for cutting or piercing?

Read the given passage and answers following questions : Emulsion: It is a colloidal mixture in which both the dispersed phase and the dispersion medium are liquids. The two or more liquids present in the mixture are generally immiscible in nature. Example: Milk. Gel: It is a colloid in which the dispersed phase i.e. liquid has combined with the dispersion medium i.e. solid to produce a semisolid material. Example: jellies. Answer the following questions : Which type of material formed when dispersed phase and dispersion medium combined ?

Which of the following is needed for formation of biogas from cow dung?