Photochemistry Quiz KKHA Arts,SMGL Commerce SPHJ Science College,Chandwad Organized By Department of Chemistry jainminakshee published on April 18, 20202 responses 0 « Previous Next » Questions in vertical order 1/10 Which of the following are the reactions in which molecules absorbing light do not themselves react but induce other molecules to react? Photosensitized reactions Free radical reactions Chain reactions Reversible reactions 2/10 The reactions which are caused by heat and in absence of light is called _____ Hint: 1 choice Photochemical reactions Dark reactions Reversible reaction Reversible photochemical reaction 3/10 Which of the following instruments is used to measure the energy of the monochromatic radiation most accurately? Hint: 1 choice Thermopile The chemical actinometer Photoelectric cell The potential detector 4/10 Which of the following are the principle laws of photochemistry? Hint: 1 choice Grothus-Draper and Stark-Einstein law Raoult’s and Dalton’s law Raoult’s and Henry’s law Lambert’s and Beer’s law 5/10 Mercaptans can be produced by photochemical addition of ______ to alpha olefins. Hint: 1 choice Hydrogen Sulphide Sulphur Hydrogen Paraffins 6/10 Vision is initiated by a photochemical reaction of ______ Hint: 1 choice Rhodopsin Enzymes Mercapton Hydrogen Chloride 7/10 Medicine bottles are often made with darkened glass Hint: 1 choice to prevent the drug from photodegradation to allow the photodegradation of drug to reduce the cost to allow oxidation of drug 8/10 In photochemical reactions, absorption of _____ radiations takes place. Hint: 1 choice ultraviolet and visible radio only visible visible and x-rays 9/10 The quantum efficiency of a photochemical reaction is defined as _______ Hint: 1 choice ratio of molecules decomposed in a given time to the number of quanta absorbed in the same time number of 11101ecules decomposed in a given time number or quanta absorbed percent time ratio of’ molecules decomposed in a given time to the number of quanta emitted in the same time 10/10 Which of the following will result in deviation from Beer’s law? (A) Change in a refractive index of medium (B) Dissociation of analyte on dilution (C) Polychromatic light (D) Path length of cuvette Hint: 1 choice A, B and C B, C and D A, C and D A, B and D
