JEE Advanced 2014 · Paper 1

The correct combination of names for isomeric alcohols with molecular formula C₄H₁₀O is/are

1. Atert-butanol and 2-methylpropan-2-ol
2. Btert-butanol and 1, 1-dimethylethan-1-ol
3. Cn-butanol and butan-1-ol
4. Disobutyl alcohol and 2-methylpropan-1-ol

Hydrogen bonding plays a central role in the following phenomena:

1. AIce floats in water.
2. BHigher Lewis basicity of primary amines than tertiary amines in aqueous solutions.
3. CFormic acid is more acidic than acetic acid.
4. DDimerisation of acetic acid in benzene.

In a galvanic cell, the salt bridge

1. Adoes not participate chemically in the cell reaction.
2. Bstops the diffusion of ions from one electrode to another.
3. Cis necessary for the occurrence of the cell reaction.
4. Densures mixing of the two electrolytic solutions.

Upon heating with Cu₂S, the reagent(s) that give copper metal is/are

1. ACuFeS₂
2. BCuO
3. CCu₂O
4. DCuSO₄

The correct statement(s) for orthoboric acid is/are

1. AIt behaves as a weak acid in water due to self ionization.
2. BAcidity of its aqueous solution increases upon addition of ethylene glycol.
3. CIt has a three dimensional structure due to hydrogen bonding.
4. DIt is a weak electrolyte in water.

For the reaction: I⁻ + ClO₃⁻ + H₂SO₄ → Cl⁻ + HSO₄⁻ + I₂. The correct statement(s) in the balanced equation is/are:

1. AStoichiometric coefficient of HSO₄⁻ is 6.
2. BIodide is oxidized.
3. CSulphur is reduced.
4. DH₂O is one of the products.

The pair(s) of reagents that yield paramagnetic species is/are

1. ANa and excess of NH₃
2. BK and excess of O₂
3. CCu and dilute HNO₃
4. DO₂ and 2-ethylanthraquinol