If the starting material for the manufacture of silicones is RSiCl3, write the structure of the product formed.
Elements of group 14 (a) exhibit oxidation state of +4 only (b) exhibit oxidation state of +2 and +4 (c) form M2– and M4+ ion (d) form M2+ and M4+ ions
Thermodynamically the most stable form of carbon is (a) diamond (b) graphite(c) fullerenes (d) coal
The type of hybridisation of boron in diborane is(a) sp (b) sp2 (c) sp3 (d) dsp2
Boric acid is polymeric due to (a) its acidic nature (b) the presence of hydrogen bonds (c) its monobasic nature (d) its geometry
An aqueous solution of borax is (a) neutral (b) amphoteric(c) basic (d) acidic
Give one method for industrial preparation and one for laboratory preparation of CO and CO2 each.
Write balanced equations for:
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. H2SO4 is added to a hot solution of X, white Read More …
What do you understand by (a) inert pair effect (b) allotropy and (c) catenation?