p-block Elements-I Chemistry Test Series For NEET-2020

Test Preparation on p-block Elements-I-Chemistry Test Series For NEET-2020

1.

In context with beryllium, which one of the following
statements is incorrect

1Its hydride is electron-deficient and polymeric
2It is rendered passive by nitric acid
3It forms Be2C
4Its salts rarely hydrolyse

B2H₆ boron hydride, it is electron deficient and dimer of
BH₃
Al,Cr are having passive nature with HNO₃ but Be
dissolve in conc. HNO₃

2.

In the extraction of aluminium the electrolyte is

1Fused cryolite with feldspar
2Fused cryolite with fluorspar
3Pure alumina in molten cryolite
4Pure alumina with bauxite and molten cryolite

3.

1A
2B
3C
4D

4.

Aluminium (III) chloride forms a dimer because

1Higher coordination number can be achieved by aluminium
2Aluminium has high ionization energy
3Aluminium belongs to III group
4It cannot form a trimer

5.

Purification of aluminium done by electrolytic refining is
known as

1Serpeck's process
2Hall's process
3Baeyer's process
4Hoop's process

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