BITSAT SERIES Chemistry
Reaction Mechanism
12 previous year questions.
Volume: 12 Ques
Yield: Medium
High-Yield Trend
2
2024 1
2018 2
2011 1
2010 6
2009 Chapter Questions 12 MCQs
01
PYQ 2009
medium
chemistry ID: bitsat-2
Which one of the following statements is false?
1
The correct order of osmotic pressure for 0.01 M aqueous solution of each compound is BaCl₂ > KCl > CH₃COOH > sucrose.
2
The osmotic pressure (π) of a solution is given by π = MRT, where M is the molarity of the solution.
3
Raoult’s law states that the vapour pressure of a component over a solution is proportional to its mole fraction.
4
Two sucrose solutions of same molality prepared in different solvents will have the same freezing point depression.
02
PYQ 2009
medium
chemistry ID: bitsat-2
The degree of dissociation of Ca(NO₃)₂ in a dilute aqueous solution containing 7.0 g of salt per 100 g of water at 100C is 70%. If vapour pressure of water at 100C is 760 mm Hg, the vapour pressure of the solution is:
1
735 mm Hg
2
730 mm Hg
3
760 mm Hg
4
746 mm Hg
03
PYQ 2009
medium
chemistry ID: bitsat-2
When the sample of copper with zinc impurity is to be purified by electrolysis, the appropriate electrodes are: c c
Cathode & Anode
1
Pure zinc Pure copper
2
Impure sample Pure copper
3
Impure zinc Impure sample
4
Pure copper Impure sample
04
PYQ 2009
medium
chemistry ID: bitsat-2
The conductivity of a saturated solution of BaSO₄ is 3.06 × 10⁻⁶ Ω⁻¹cm⁻¹ and its equivalent conductance is 1.53 Ω⁻¹cm²eq⁻¹. The Kₛp for BaSO₄ is:
1
4 × 10⁻¹²
2
2.5 × 10⁻⁹
3
2.5 × 10⁻¹³
4
4 × 10⁻⁶
05
PYQ 2009
medium
chemistry ID: bitsat-2
A cell that utilises the reaction
Zn(s) + 2H^+(aq) Zn²⁺(aq) + H₂(g)
addition of H₂SO₄ to cathode compartment, will:
1
increase the E and shift equilibrium to the right.
2
lower the E and shift equilibrium to the right.
3
lower the E and shift equilibrium to the left.
4
increase the E and shift equilibrium to the left.
06
PYQ 2009
medium
chemistry ID: bitsat-2
The chemical reaction 2O₃ → 3O₂ proceeds as follows:
O₃ fast O₂ + O
O + O₃ slow 2O₂
The rate law expression should be:
1
r = k[O₃]
2
r = k[O₃][O₂]⁻¹
3
r = k[O₃]²[O₂]²
4
r = k[O₃][O₂]²
07
PYQ 2010
easy
chemistry ID: bitsat-2
Hyperconjugation involves
1
conjugation
2
delocalisation
3
No bond resonance
4
All
08
PYQ 2011
medium
chemistry ID: bitsat-2
Which of the following compounds will react with two moles of ?
1
2
3
4
09
PYQ 2011
easy
chemistry ID: bitsat-2
The product/s of the reaction, is/are:
1
2
3
4
None of these
10
PYQ 2018
medium
chemistry ID: bitsat-2
Which of the following is strongest nucleophile
1
2
3
4
11
PYQ 2024
medium
chemistry ID: bitsat-2
The ratio for the reaction is:
1
2
3
1
4
12
PYQ 2024
medium
chemistry ID: bitsat-2
Le-Chatelier's principle is not applicable to
1
2
3
4