Photochemistry Quiz

Photochemistry Quiz

KKHA Arts,SMGL Commerce SPHJ Science College,Chandwad Organized By Department of Chemistry

published on April 18, 2020
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