Related InterviewSolutions

• When dispersed phase is liquid and dispersion medium is gas, then the colloidal system is calledA. smokeB. emulsionC. coludD. gel
• Assertion : Colloidal solutions are electrically netural Reason : Dispersed phase and dispersion medium carry same change.A. statement -1 is true, statement-2 is true , statement -2 is a correctB. statement -1 is true, statement-2 is true , statement -2 is not a correctC. statement -1 is true, statement-2 is false.D. statement -1 is false, statement-2 is true.
• Lysione in not used as :A. disinfectantB. germ killerC. treating eye diseaseD. anti- cancer drug
• The blue colour of the water of the sea is due to :A. reflection of blue light by salts present in waterB. scattering of blue light by sol particlesC. reflection of blue coloured light by the impurities present in sea waterD. absorption of radiation of different colours expect blue light.
• Bleeding is stopped by the application of ferric-chloride this is because:A. the blood starts flowing in opposite directionB. the ferric chloride seals the blood vesselC. the blood reacts and forms a solid which seals the blood vesselD. the blood is coagulated and thus, the blood vessel seals is sealed
• Statement : to stop bleeding from an injury ferric chloride can be applied.A. it is not true , ferric chloride is a poison.B. it it true `Fe^(3+)` ions coagulate blood which is negatively charged byC. it is not true ,`CI^(-)` ions form postively charged sol, profuse bleeding takes place.D. it is not true, ferric chloride is ionic and gets into blood stream.
• The process of separation of cream form milk is called :A. emulsificationB. dmulsificationC. electro-osmosisD. peptization
• The emulsifying agent in milk isA. lactic acidB. fatC. lactoseD. casein
• Which of the following forms cationic micelles above certain concentration ?A. sodium dodecyl sulphateB. sodium acetateC. ureaD. cetyltrimethyl ammonium bromide
• Which of the following has minimum flocculation value ?A. `Pb^(2+)`B. `Pb^(4+)`C. `Sr^(2+)`D. `Na^(+)`