Assertion : $Al(OH)_3$ is insoluble in $NH_4OH$ but soluble in $NaOH$ .
Reason : $NaOH$ is strong alkali.
If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
If the Assertion is correct but Reason is incorrect.
If both the Assertion and Reason are incorrect.
The most abundant metal in the earth crust is
A certain salt $X,$ gives the following results.
$(i)$ Its aqueous solution is alkaline to litmus.
$(ii) $ It swells up to a glassy material $Y$ on strong heating.
$(iii)$ When conc. $H _{2} SO _{4}$ is added to a hot solution of $X,$ white crystal of an acid $Z$ separates out.
Write equations for all the above reactions and identify $X, Y$ and $Z$
Colour of the bead in borax bead test is mainly due to the formation of
Which of the following is an electron deficient molecule?
Aluminium vessels should not be washed with materials containing washing soda since