MH SET 2024 Paper 2 Chemical Sciences Question Paper (07-Apr-2024)

Question 1

The recovery of two lanthanoids easier than the others due to their redox chemistry. These lanthanoids are :

Accepted Answer

Ce4+, Eu2+

Answer

Pr4+, Tb4+

Answer

Nd4+, Ln2+

Answer

Dy4+, Ln4+

Question 2

Which one of the following is used for the formation of atomic vapours in Atomic Absorption Spectroscopy ?

Accepted Answer

Flame atomization

Answer

Electric arcs and sparks

Answer

Sputtering devices

Answer

Ovens

Question 3

The highest 10 Dq value obtained among the ligands Br–, PR3, en and H2O in complexes will be for :

Accepted Answer

PR3

Answer

H2O

Answer

Br–

Answer

en

Question 4

The γ-ray source used in 57Fe Mössbauer spectroscopy is :

Accepted Answer

57Co

Answer

129Tc

Answer

119mSn

Answer

121mSn

Question 5

The correct trend of $\Delta_{0}$ for chromium (III) complexes [Cr(CN)6]3–, [Cr(en)3]3+, [Cr(H2O)6]3+ and [Cr(NH3)6]3+ is :

Accepted Answer

[Cr(CN)6]3– > [Cr(en)3]3+ > [Cr(NH3)6]3+ > [Cr(H2O)6]3+

Answer

[Cr(H2O)6]3+ > [Cr(NH3)6]3+ > [Cr(en)3]3+ > [Cr(CN)6]3–

Answer

[Cr(H2O)6]3+ > [Cr(NH3)6]3+ ≅ [Cr(en)3]3+ > [Cr(CN)6]3–

Answer

[Cr(en)3]3+ > [Cr(CN)6]3– > [Cr(NH3)6]3+ > [Cr(H2O)6]3+