Periodic Properties And Variation Of Properties Physical And Chemical — Chemistry STD 10 — Question

The sulphur compound used for the identification of several cations is _______ .

A mixture of 2 volumes of ammonia and 1 volume of oxygen, when heated electrically with a platinum filament, reacts to form ________ gas and water. [nitric oxide/nitrous oxide]

Converting ethanol to ethene requires the use of_________(Concentrated hydrochloric acid, concentrated nitric cid, concentrated sulphuric acid).

An explosive prepared by using sulphuric acid is _______ .

According to Gay-Lussac's Law, if the pressure of a gas is halved and the volume is kept constant, the temperature must be ________ (doubled/same/halved)

Substitution reactions are characteristic reactions of ________ .[alkynes/alkenes/alkanes]

In covalent compounds, the bond is formed due to the __________ of electrons. (Sharing, Transfer) 

The ions which discharge on the positive electrode during electrolysis ____________electrons. Thus, the ions are said to be _____________.

 

Heating solution of ammonium chloride with sodium nitrite produces ______ (ammonia, nitrogen)