Water is poured over a white solid and a colourless neutr...
Water is poured over a white solid and a colourless neutral gas is evolved which burns with a sooty flame. The white solid is?
calcium
calcium oxide
calcium carbide
sodium peroxide
sodium sulphate
Correct answer is C
No explanation has been provided for this answer.
\(^{226}_{88}Ra\) → \(^x_{86}Rn\) + alpha particle...
Steam changes the colour of anhydrous cobalt (II) chloride from ...
The properties of a good primary standard include the following except ...
Stainless steel is an alloy of ...
The colour of litmus in an alkaline medium is ...