s-block Elements-II Chemistry Test Series IIT JEE

Test Preparation on s-block Elements-II-Chemistry Test Series IIT JEE-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
4 Its salts rarely hydrolyse

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.

Al2O3 can be converted to anhydrous AlCl3 by heating

1A mixture of Al2O3 and carbon in dry Cl2 gas
2Al2O3 with Cl2 gas
3Al2O3 with HCl gas
4Al2O3 with NaCl in solid state

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