1. Which element is used in medicine; photography and making dyes; gives off a violet vapour when heated?

Answer: Iodine

Reply

Type in
(Press Ctrl+g to toggle between English and the chosen language)

Comments

Show Similar Question And Answers
QA->Which element is used in medicine; photography and making dyes; gives off a violet vapour when heated?....
QA->Who said this famous constitutional quote that “Law and order are the medicine of the body politic and when the body politic gets sick, medicine must be administered.”....
QA->By which name, the dying star that have expanded greatly from its original size and gives off red light are known?....
QA->The substance used in the production of nylon; rayon; explosives; fertilizers and dyes?....
QA->A​ ​white​ ​solid’A’on​ ​heating​ ​gives​ ​off​ ​a​ ​gas​ ​which​ ​turns​ ​lime​ ​water milky.The​ residue​ ​is​ ​yellow​ ​when​ ​hot​ ​but​ ​turns​ ​white​ ​on​ ​cooling​ ​.The solid​ ​A​ ​is:....
MCQ->The simplest method of welding two pieces of metal together is known as pressure welding.The ends of a metal are heated to a white heat-for iron,the welding temperature should be about 1300C-in a flame.At this temperature the metal becomes plastic.The ends are pressed or hammered together,and the joint is smoothed off.Care must be taken to ensure that surfaces are thoroughly clean first,for dirt will weaken the weld.Moreover,the heating of iron or steel to a high temperature cause oxidation,and a film of oxide is added to the heated surfaces.For this reason,flux is applied to the heated metal.At welding heat,flux melts and the oxide particles are dissolved in it together with any other impurities which may be present.The metal surfaces are pressed together,and the flux is squeezed out from the center of the weld.A number of different types of weld may be used,but for fairly thick bars of metals,a vee-shaped belt should be normally employed.It is rather stronger than ordinary butt weld. The simplest way of welding two pieces of metal together is...
MCQ->If white is called blue, blue is called red, red is called yellow, yellow is called green, green is called black, black is called violet and violet is called orange, then what would be the colour of human blood?...
MCQ->Solublised vat dyes are-------salts of sulphuric acid esters of leuco vat dyes...
MCQ->Cotton dyed with direct dyes are topped with basic dyes to improve the...
MCQ->Reactive dyes containing two chlorine atoms in the chlorotriazine ring are termed as------reactive dyes...
Terms And Service:We do not guarantee the accuracy of available data ..We Provide Information On Public Data.. Please consult an expert before using this data for commercial or personal use | Powered By:Omega Web Solutions
© 2002-2017 Omega Education PVT LTD...Privacy | Terms And Conditions
Question ANSWER With Solution