The process in which solid changes directly into vapours without passing through liquid state?
A. Decantation B. Sublimation C. Evaporation D. None
Chemistry MCQs
The pH of milk is_______?
A. 9 B. 6.5-7 C. 8 D. 12
Calculate % of N in KNO3__________?
A. 14.34% B. 18.56% C. 13.86% D. None of these
Element that have same number of neutrons are called__________?
A. isotope B. isobar C. isotone D. None of these
Who used the term Concentrationwindow to draw the arbitrary lines of demarcation
A. Einstein B. Dr.A.Walash C. Schwartz D. S.E.Manhan
Which one of the following serve as aquatic solar fuel cell:
A. Bacteria B. Virus C. Fungi D. Algae
How much solar flux absorb by earth’s surface is used to drive hydrologic cycle:
A. 1/2sec B. 1/3rd C. 1/4th D. 1/5th
Polyamides are synthetic polymers commonly known as___________?
A. synthetic B. Protein C. Cellulose D. Nylon
The rate of formation of ozone depends on the flux of:
A. visible radiation B. Ultra violet radiation C. Infrared radiation D. Gamma rays
Traffic policemen on duty at busy street crossings during heavy traffic rush hours are advised to use:__________?
A. Hydrogen tank B. Nitrogen tank C. Oxygen tank D. None of these Traffic policemen on duty at busy street crossings during heavy traffic rush hours are advised to use oxygen tanks in developed countries