(a) What is sublimation? Name two substances (other than ammonium chloride) which undergo sublimation.(b) Draw a labeled diagram of the experimental set-up to demonstrate the sublimation of ammonium chloride.
(a) Sublimation is the change of a solid directly into vapour on heating and of vapour into solid on cooling.
Iodine and camphor are two substances that undergo sublimation.
(b) The labeled diagram of the experimental set-up to demonstrate the sublimation of ammonium chloride is given below:
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- One of the following does not undergo sublimation. This one is :(a) iodine (b) sodium chloride(c) ammonium chloride (d) camphor
- Name the process you would use to separate ammonium chloride from a mixture of sodium chloride and ammonium chloride.
- What is the correct order of the methods you would apply to separate the components of a mixture of ammonium chloride, common salt and sand ?(1) dissolving in water, filtration, evaporation and sublimation(2) dissolving in water, evaporation and sublimation(3) sublimation, dissolving in water, filtration and evaporation(4) moving a magnet, dissolving in water and sublimation
- With the help of a labelled diagram, describe the method of separating ammonium chloride from a mixture of ammonium chloride and common salt. Mention the difference in the properties of ammonium chloride and sodium chloride which has made this separation possible.
- Which of the following mixture can be separated completely by the process of sublimation ?(1) fine sand and cane sugar(2) sodium chloride and potassium permanganate(3) potassium chloride and ammonium chloride(4) barium chloride and sodium sulphate
- Name any three substances that show sublimation.
- What is the definition of Sublimation?
- What is sublimation?
- Name one property which is shown by ammonium chloride but not by sodium chloride.
- What is the meaning of process of sublimation
- Name any two solid substances whose mixture can be separated by sublimation.
- Define Sublimation.
- Which among the following are physical or chemical changes?(a) Evaporation of petrol(b) Burning of Liquefied Petroleum Gas (LPG)(c) Heating of an iron rod to red hot.(d) Curdling of milk(e) Sublimation of solid ammonium chloride
- Write the chemical formula of ammonium chloride. Explain why an aqueous solution of ammonium chloride is acidic in nature? Illustrate your answer with the help of a chemical equation.
- Which of the following compounds are ionic and which are covalent?Urea, Cane sugar, Hydrogen chloride, Sodium chloride, Ammonium chloride, Carbon tetrachloride, Ammonia, alcohol, Magnesium chloride.
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