Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.

The p-Block Elements

Multiple Choice Questions

231.

Element showing the phenomenon of allotropy is

aluminium
tin
lead
copper

232.

In which of the following the inert pair effect is most prominent?

233.

The metal that does not give the borax bead test is

Chromium
nickel
lead
manganese

234.

Which one of the following is a good conductor of electricity?

Diamond
Graphite
Silicon
Amorphous carbon

235.

Which one of the following is maximum electronegative?

lead
Silicon
Carbon
Tin

236.

Buckminster-fullerene is a variety of

boron
carbon
ammonia
fluorine

237.

Doping of silicon with boron leads to

n-type semiconductor
p-type semiconductor
superconductor
insulator

238.

The substance not likely to contain CaCO₃ is

marble statue
calcined gypsum
sea shells
dolomite

239.
The electronic configuration of an element C is 1s², 2s², 2p⁶. The formula of substance containing only C will be

C₈

C₄

C₂

C

The electronic configuration 1s² 2s² 2p⁶ belongs to noble gas neon. All the noble gases are monoatomic in nature because they have complete valence shell and stable electronic configuration (ns²np⁶) and so they are chemically inert and do not enter in chemical combination.

C = Ne₍₁₀₎ = 1s² 2s² 2p⁶