Related InterviewSolutions

• Thermal exparision of solids is the least among the three states of matter due toA. high kinetic energy of molecules of solids.B. close packing of molecules solids.C. the vibratory motion and rotatory motion of molecules of solids.D. the large intermolecular space present in solids.
• Identify the wrong statement among the following.A. Molecules of solids prossesss only vibratory motion.B. Solids are incompressible.C. Solids have only one free surface.D. Gases are highly diffusible.
• _________ and _________ are the suitable separation methods for mixtures of soluble solids in liquids.
• Separation of sawdust from water, can be carried out by the following steps given below. Arrange them in a proper sequence. (a) The mixture is poured gently in to the filter cone and collected into another beaker which is called filtrate. (b) A mixture of saw dust and water is taken in a beaker (c ) A filter paper is folded in the form of a cone and fitted into a funnel by moistening it with few drops of water (d) solid retained on the filter paper is called residue.A. cabdB. abcdC. cdbaD. bcad
• For the separation of the components of a mixture of iodine, iron filings and sawdust arrange processes in sequential order. (a) The mixture is covered with an inverted funnel. The outside surface of the funnel is wrapped with a moist filter paper and the mixture is gently heated. Iodine is separated. (b) A strong bar magnet is moved through the mixture. The iron filing are separated. (c ) I Sawdust is left after iodine separates. The mixture is exposed to wind to remove sawdust.A. b,a,cB. d,b,aC. d,c,aD. a,d,c
• A mixture contains three components namely glucone-D, water and sand. These three can be collected separately byA. filtration and evaporationB. filtration and sublimation.C. filtration and distillation.D. sedimentation and decantation.
• `{:(,"Column-A",,,"Column-B"),((A),"Sublimation",(),(a),NaCl+"water"),((B),"Filtration",(),(b),"Iodine+sand"),((C),"Evaporation",(),(c),"Sawdust+water"):}`A. `Atoa" "Btoc" "Ctob`B. `Atoc" "Btoa" "Ctob`C. `Atoc" "Btob" "Ctoa`D. `Atob" "Btoc" "Ctoa`
• Which among the following has strong forces of attraction ?A. Hydrogen chlorideB. BromineC. FluorineD. Chlorine
• Which among the following pairs of substances has strong intermolecular forces of attraction ?A. Bromine, mercuryB. Gallium, bromineC. Bromine, sodiumD. Carbon, potassium
• Which among the following is a pure substance ?A. Dilute sulphuric acidB. Concentrated sulphuric acidC. Aqueous NaClD. Molten NaCl