MH SET 2021 Paper 2 Chemical Sciences Question Paper (26-Sep-2021)

Question 1

The magnetic moment of potassium salt of [Fe(CN)6]3– is 2.3 µB. Choose the correct statement from the following :

Accepted Answer

The increase in magnetic moment because of spin-orbit coupling

Answer

It is spin only value of one unpaired electron

Answer

It is spin only value between one and two unpaired electron

Answer

The increase in magnetic moment because of ferromagnetic coupling

Question 2

According to Wade’s rules, the structures of B10C2H12 and B10H12(SEt2)2 are respectively :

Accepted Answer

closo and arachno

Answer

nido and closo

Answer

closo and nido

Answer

nido and arachno

Question 3

The geometry of IF7 is :

Accepted Answer

pentagonal bipyramidal

Answer

capped octahedron

Answer

cube

Answer

trigonal prismatic

Question 4

A complex that possess 5D ground term symbol for its metal ion is :

Accepted Answer

[Cr(H2O)6]2+

Answer

[Mn(CN)6]3–

Answer

[Fe(CN)6]4–

Answer

[Co(H2O)6]2+

Question 5

The magnetic moment of the complex [Mn(NCS)6]4– is 6.06 µB. Its electronic configuration is :

Accepted Answer

t2g3 eg2

Answer

t2g5 eg0

Answer

t23 e2

Answer

t2g2 eg3