JEE Rank Booster Quiz 1

The difference between ΔH and ΔU (ΔH - ΔU), when the combustion of one mole of heptane(l) is carried out a temperature T is equal to :

• -4 RT

• -3 RT

• 4 RT

• 3 RT

• 2 a

• +144.0 KJ mol^-1

• -74.8 KJ mol^-1

• -144.0 KJ mol^-1

• +74.8 KJ mol^-1

• a→p, b→q, c→r, d→s

• a→p, b→r, c→q, d→s

• a→q, b→p, c→r, d→s

• a→p, b→s, c→q, d→r

ΔU is equal to

• isobaric work

• isothermal work

• adiabatic work

• isochoric work

• base and base

• base and acid

• acid and base

• acid and acid

• (III) 〈 (II) 〈 (I)

• (II) 〈 (III) 〈 (I)

• (III) 〈 (I) 〈 (II)

• (II) 〈 (I) 〈 (III)

• (a) → (III), (b)→ (I), (c)→(II), (d)→(IV)

• (a) →(IV), (b)→(II), (c)→(I), (d)→(III)

• (a) →(II), (b)→(IV), (c)→(I), (d)→(III)

• (a) → (III), (b)→ (I), (c)→(IV), (d)→(II)

• 3 equivalents

• 4 equivalents

• 5 equivalents

• None of these

The pH of 0.02 M NH₄Cl solution will be

[given K_b (NH₄OH) = 10^–5 and log 2 = 0.301]

• 2.65

• 5.35

• 4.35

• 4.65