In the system, CaF2(s) Ca2+ (aq) + 2F-(aq), increasing the concentration of Ca2+ ions 4 times will cause the equilibrium concentration of F- ions to change to:

1. 1/4 of the initial value

2. 1/2 of the initial value

3. 2 times of the initial value

4. none of the above

Subtopic:  Kp, Kc & Factors Affecting them |
 72%
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The addition of HCl does not suppress the ionization of:

1. Acetic acid 2. Benzoic acid
3. H2S 4. H2SO4
Subtopic:  Common Ion Effect |
 60%
From NCERT
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KMnO4 can be prepared from K2MnO4 as per reaction,

 3MnO42- + 2H2O  2MnO4- + MnO2 + 4OH-

The reaction can go to completion by removing OH- ions by adding             

1. HCl

2. KOH

3. CO2

4. SO2

Subtopic:  Introduction To Equilibrium |
From NCERT
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The rate of reaction depends upon the                    

1. Volume

2. Force

3. Pressure

4. Concentration of reactants

Subtopic:  Introduction To Equilibrium |
 87%
From NCERT
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The increasing order of basic strength of Cl-CO32- , CH3COO-, OH-, F- is:

1. Cl-<F-<CH3COO-<CO32- <OH-

2.  Cl-<F-CO32- <CH3COO-<OH-

3. CH3COO-<Cl-<F-<CO32- <OH-

4. none of the above

Subtopic:  Acids & Bases - Definitions & Classification |
From NCERT
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If the pressure is applied to the following equilibrium, Liquid  Vapour. The boiling temperature of the liquid:

1. will decrease                                 

2. will increase

3. may not change                           

4. will not change

Subtopic:  Introduction To Equilibrium |
 63%
From NCERT
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Which of the following statements is not true?

1. The pH of 10-8 N HCl is 8.

2. 96500 coulomb of electricity is passed through a CuSO4 solution deposit 1g of equivalent of Cu at cathode.

3. The conjugate base of H2PO4- is HPO42-.

4. pH + pOH = 14 for all aqueous solution.

Subtopic:  pH calculation |
 62%
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In which of the following will the solubility of AgCl be the minimum?

1. 0.1 M NaNO3 2. Water
3. 0.1 M NaCl 4. 0.1 M NaBr
Subtopic:  Common Ion Effect |
 76%
From NCERT
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Which of the following salts will give the highest pH in the water?                   

1. KCl           

2. NaCl         

3. Na2CO3     

4. CuSO4

Subtopic:  pH calculation |
 75%
From NCERT
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An aqueous solution of which salt has the lowest pH?

1. NaOH                 

2. NH4Cl

3. Na2CO3             

4. NaCl

Subtopic:  pH calculation |
 77%
From NCERT
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