JEE Questions for Chemistry Equilibrium Quiz 14 - MCQExams.com


Chemistry-Equilibrium-4221.png

  • Chemistry-Equilibrium-4222.png
  • the reaction is exothermic

  • Chemistry-Equilibrium-4223.png

  • Chemistry-Equilibrium-4224.png

Chemistry-Equilibrium-4225.png
  • Q = 0
  • Q = KC
  • Q < KC
  • Q > KC

Chemistry-Equilibrium-4226.png
  • High pressure
  • Decreasing SO3 concentration
  • High temperature
  • Increasing reactants concentration
The most important buffer in blood consists of

  • Chemistry-Equilibrium-4227.png
  • 2)
    Chemistry-Equilibrium-4228.png

  • Chemistry-Equilibrium-4229.png

  • Chemistry-Equilibrium-4230.png
If pKb for fluoride ion at 25oC is 10.83, the ionisation constant of hydrofluoric acid in water at this temperature is

  • Chemistry-Equilibrium-4231.png
  • 2)
    Chemistry-Equilibrium-4232.png

  • Chemistry-Equilibrium-4233.png

  • Chemistry-Equilibrium-4234.png

Chemistry-Equilibrium-4235.png
  • 4.3
  • 2.15
  • 8.60
  • 7

Chemistry-Equilibrium-4236.png

  • Chemistry-Equilibrium-4237.png
  • 2)
    Chemistry-Equilibrium-4238.png

  • Chemistry-Equilibrium-4239.png

  • Chemistry-Equilibrium-4240.png
For a sparingly soluble salt ApBq relation ship of its solubility product(KSP) with its solubility(s) is.

  • Chemistry-Equilibrium-4241.png
  • 2)
    Chemistry-Equilibrium-4242.png

  • Chemistry-Equilibrium-4243.png

  • Chemistry-Equilibrium-4244.png

Chemistry-Equilibrium-4246.png
  • 0.0064gm
  • 0.1280gm
  • 0.0128gm
  • 1.2800gm

Chemistry-Equilibrium-4247.png

  • Chemistry-Equilibrium-4248.png
  • 2)
    Chemistry-Equilibrium-4249.png

  • Chemistry-Equilibrium-4250.png

  • Chemistry-Equilibrium-4251.png
According to bronsted- lowry concept. correct order of relative strength of bases follows the order

  • Chemistry-Equilibrium-4252.png
  • 2)
    Chemistry-Equilibrium-4253.png

  • Chemistry-Equilibrium-4254.png

  • Chemistry-Equilibrium-4255.png

Chemistry-Equilibrium-4260.png

  • Chemistry-Equilibrium-4261.png
  • 2)
    Chemistry-Equilibrium-4262.png

  • Chemistry-Equilibrium-4263.png

  • Chemistry-Equilibrium-4264.png
NH4 Cl is acidic because
  • On hydrolysis NH4 Cl give weak base NH4 OH and strong acid HCl
  • Nitrogen donates a pair of e–
  • It is a salt of weak acid and strong base
  • On hyrdolysis NH4 Cl gives strong base and weak acid
100 ml of 0.04 N HCl aqueous solution is mixed with 100 ml of 0.02 N NaOH solution. The PH of resulting solution is
  • 1.0
  • 1.7
  • 2.0
  • 2.3
What will be the equilibrium constant at 717 K for the reaction:
Chemistry-Equilibrium-4266.png
  • 64
  • 8
  • 1/64
  • 1/8
For which one of the following reactions is a combination of high pressure and high temperature helpful in obtaining a high equilibrium yield?

  • Chemistry-Equilibrium-4268.png
  • 2)
    Chemistry-Equilibrium-4269.png

  • Chemistry-Equilibrium-4270.png

  • Chemistry-Equilibrium-4271.png
Ice and water are in equilibrium at 273 K. Which of the following statements is correct?
  • G (ice) > G(H2 O)
  • G (ice) < G (H2 O)
  • G (ice) = G(H2 O) = 0
  • G (ice) = G (H2 O) ≠ 0

Chemistry-Equilibrium-4272.png
  • High pressure, high temperature
  • Only low temperature
  • High pressure, low temperature
  • Only low pressure
In the equilibrium reaction involving the dissociation of CaCO3
Chemistry-Equilibrium-4273.png

  • Chemistry-Equilibrium-4274.png
  • 2)
    Chemistry-Equilibrium-4275.png

  • Chemistry-Equilibrium-4276.png

  • Chemistry-Equilibrium-4277.png
At a certain temperature, the following reactions:
Chemistry-Equilibrium-4279.png

  • Chemistry-Equilibrium-4280.png
  • 2)
    Chemistry-Equilibrium-4281.png

  • Chemistry-Equilibrium-4282.png

  • Chemistry-Equilibrium-4283.png
Which of the following gives blood red colour with KCNS?
  • Cu2+
  • Fe3+
  • Al3+
  • Zn2+

Chemistry-Equilibrium-4285.png
  • neither kp nor α changes
  • both kp and α change
  • kp changes but α does not
  • kp does not change but α changes

Chemistry-Equilibrium-4286.png
  • Q = Kc
  • Q < Kc
  • Q > Kc
  • Q = 0
56 g of N2 and 6 g of H2 were kept at 400ºC in 1 litre vessel. The equilibrium mixture contained 27.54 g of NH3. The approximate value for Kc for the above reaction in mol2 lit–2 is
  • 10
  • 20
  • 30
  • 40
One mole of SO3 was placed in a vessel of 1 litre capacity at a certain temperature when the following equilibrium was established
Chemistry-Equilibrium-4288.png
  • 0.36
  • 0.45
  • 0.54
  • 0.675

Chemistry-Equilibrium-4290.png
  • 0..004
  • 0.016
  • 0.080
  • 0.160

Chemistry-Equilibrium-4292.png
  • 1.2 ×10–4 M
  • 1.2 ×10–3 M
  • 1.2 ×10–2 M
  • 1.2 ×10–1 M

Chemistry-Equilibrium-4294.png
  • [I2] > [I]
  • [I2] = [I]
  • [I2] < [I]
  • Unpredictable
The degree of dissociation of dinitrogen tetroxide N2O4 (g) → 2NO2 (g) at temperature T and total pressure P is α. Which one of the following is the correct expression for the equilibrium constant (Kp ) at this temperature?

  • Chemistry-Equilibrium-4296.png
  • 2)
    Chemistry-Equilibrium-4297.png

  • Chemistry-Equilibrium-4298.png

  • Chemistry-Equilibrium-4299.png
Which one of the following is the best conductor of electricity?
  • 1M HCl
  • 1MH2CO3
  • 1MH3PO4
  • 1MH2SO4
According to Lowry- Bronsted concept, which one of the following is considered as an acid?
  • H3O+
  • BF3
  • OH–
  • Cl–
The conjugate bases in the following reaction
Chemistry-Equilibrium-4301.png

  • Chemistry-Equilibrium-4302.png
  • 2)
    Chemistry-Equilibrium-4303.png

  • Chemistry-Equilibrium-4304.png

  • Chemistry-Equilibrium-4305.png
The correct order of acidic strength is

  • Chemistry-Equilibrium-4307.png
  • 2)
    Chemistry-Equilibrium-4308.png

  • Chemistry-Equilibrium-4309.png

  • Chemistry-Equilibrium-4310.png
Ionic product of water is 1.0 × 10–14 at 250 C. This is so
  • only for water
  • only for acidic solution
  • only for basic solution
  • for all the three above
The units of ionic product of water (Kw) are
  • mol–1 L–1
  • mol–2 L–2
  • mol–2 L–1
  • mol2 L–2
On adding ammonia to water
  • ionic product will increase
  • ionic product will decrease
  • [OH−] will increase
  • [OH−] will decreases
Which is the correct representation for the solubility product constant of Ag2CrO4 ?

  • Chemistry-Equilibrium-4312.png
  • 2)
    Chemistry-Equilibrium-4313.png

  • Chemistry-Equilibrium-4314.png

  • Chemistry-Equilibrium-4315.png
If S1, S2, S3 and S4 are the solubilities of AgCl in water, in 0.01 M CaCl2 in 0.01 M NaCl and in 0.05 MAgNO3 respectively at a certain temperature, the correct order of solubilites is

  • Chemistry-Equilibrium-4317.png
  • 2)
    Chemistry-Equilibrium-4318.png

  • Chemistry-Equilibrium-4319.png

  • Chemistry-Equilibrium-4320.png
pH of an acid buffer is given by

  • Chemistry-Equilibrium-4321.png
  • 2)
    Chemistry-Equilibrium-4322.png

  • Chemistry-Equilibrium-4323.png

  • Chemistry-Equilibrium-4324.png
At 90ºC, pure water has H3O+ ion concentration of 10-6 mol L-1. Then Kw at 900 C is
  • 10-6
  • 10-14
  • 10-12
  • 10-8
Ksp for HgSO4 is 6.4 × 10–5, then solubility of the salt is
  • 8 × 10–6
  • 8 × 10–31
  • 4.6 × 10–5
  • None of these

Chemistry-Equilibrium-4327.png

  • Chemistry-Equilibrium-4328.png
  • 2)
    Chemistry-Equilibrium-4329.png

  • Chemistry-Equilibrium-4330.png

  • Chemistry-Equilibrium-4331.png
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