Practice paper · Bengaluru region

Which of the following haloalkanes is most reactive towards SN2 reaction?

1. ACH3 – CH2 – I
2. BCH3 – CH2 – Br
3. CCH3 – CH2 – Cl
4. DCH3 – CH2 – F

Which of the following alcohols will not undergo oxidation?

1. AButan-1-ol
2. BButan-2-ol
3. C2-Methylbutan-2-ol
4. D3-Methylbutan-2-ol

Consider the following standard electrode potential values: Sn²⁺ (aq) + 2e⁻ → Sn(s) E° = – 0.14 V Fe³⁺ (aq) + e⁻ → Fe²⁺ (aq) E° = + 0.77 V What is the cell reaction and potential for the spontaneous reaction that occurs?

1. A2 Fe²⁺ (aq) + Sn²⁺ (aq) → 2 Fe³⁺ (aq) + Sn(s) E° = – 0.91 V
2. B2 Fe³⁺ (aq) + Sn(s) → 2 Fe²⁺ (aq) + Sn²⁺ (aq) E° = + 0.91 V
3. C2 Fe²⁺ (aq) + Sn²⁺ (aq) → 2 Fe³⁺ (aq) + Sn(s) E° = + 0.91 V
4. D2 Fe³⁺ (aq) + Sn(s) → 2 Fe²⁺ (aq) + Sn²⁺ (aq) E° = + 1.68 V

Which of the following amines does not give foul smell of isocyanide on heating with chloroform and ethanolic KOH?

1. ACH3CH2NH2
2. B(CH3)2CHNH2
3. C(CH3CH2)3N
4. DC6H5NH2

α-helix structure refers to :

1. Aprimary structure of protein
2. Bsecondary structure of protein
3. Ctertiary structure of protein
4. Dquaternary structure of protein

In the complex compound Fe4[Fe (CN)6]3 oxidation states of counter ion Fe and central metal ion Fe respectively are;

1. AII, III
2. BIII, II
3. CIV, III
4. DII, II

In the Hinsberg’s method for separation of primary, secondary and tertiary amines, the reagent used is:

1. ANitrous acid
2. BCHCl3 + aq. NaOH
3. CC6H5SO2Cl
4. DHCl / ZnCl2

Among the following electronic configurations of transition metals which one shows the highest oxidation state?

1. A[Ar] 3d³4s²
2. B[Ar]3d⁵4s¹
3. C[Ar] 3d⁵4s²
4. D[Ar] 3d⁸4s²