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Видео ютуба по тегу Answerxpert
Name a cation, which is not obtained from a metal.
Why is heating with conc. nitric acid done before precipitation of group–III?
Why does iodine give a blue colour with starch solution?
Why is it essential to boil off H₂S gas before precipitation of radicals of group–III?
Streptokinase produced by bacterium Streptococcus is used for:
What is chromyl chloride test ? How do you justify that CrO2Cl2 is acidic in nature?
Can we use glass rod instead of platinum wire for performing the flame test? Explain your answer.
Why is NH₄OH added before (NH₄)₂CO₃ solution while precipitating group–V cations?
Why do we sometimes get a white precipitate in group–VI even if the salt does not contain Mg²⁺ radic
Why do bromides and iodides not give tests similar to chromyl chloride test?
In Carius method of estimation of halogen, 0.25 g of an organic compound gave 0.15 g of silver bromi
Why are the group–V radicals tested in the order Ba²⁺, Sr²⁺ and Ca²⁺?
Why is platinum metal preferred to other metals for the flame test?
Carbon dioxide gas and sulphur dioxide gas both turn lime water milky. How will you distinguish betw
How can you test the presence of ammonium ion?
What is aqua regia?
Time required for 99.9% completion of a first order reaction is _____ times the time required for co
Why cannot conc. HCl be used as a group reagent in place of dil. HCl for the precipitation of Ist gr
Electronic configuration of Atomic Number - 99 is
Why is original solution for cations not prepared in conc. HNO3 or H2SO4?
Why does conc. HNO₃ kept in a bottle turn yellow in colour?
Indicate the complex/complex ion which did not show any geometrical isomerism
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