s-block Elements-I Chemistry Test Series IIT JEE

Test Preparation on s-block Elements-I-Chemistry Test Series IIT JEE-2020

1.

Which of the following statements about hydrogen is incorrect-

1Hydrogen has three isotopes of which tritium is the most common
2Hydrogen never acts as cation in ionic salts
3Hydronium ion, H3O+ exists freely in solution
4Dihydrogen acts as a reducing agent

2.

Spin isomerism is shown by-

1Dichloro benzene
2Hydrogen
3Dibasic acid
4n-butane

3.

In context with the industrial preparation of hydrogen from
water gas (CO+H2), which of the following is the correct
statement

1CO is removed by absorption in aqueous Cu2Cl2 solution
2H2 is removed through occlusion with Pd
3CO is oxidised to CO2 with steam in the presence of a catalyst followed by absorption of CO2 in alkali
4CO and H2 are fractionally separated using differences in their densities

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