The decreasing order of strength of the bases,

OH-, NH2-, H-CC- and CH3-CH2- is:

1. CH3-CH2->NH2-> H-CC->OH-

2. H-CC-> CH3-CH2->NH2->OH-

3. OH->NH2->H-CC->CH3-CH2-

4. NH2->H-CC->OH->CH3-CH2-

 

Subtopic:  Acids & Bases - Definitions & Classification |
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For the equilibrium, PCl5  PCl3 + Cl2,

KC=α2/(1-α)V, temperature remaining constant:

1. Kc will increase with the increase in volume

2. Kc will increase with the decrease in volume

3. Kc will not change with the change in volume

4. Kc may increase or decrease with the  change in volume depending upon its numerical value.

Subtopic:  Kp, Kc & Factors Affecting them |
 63%
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For the reaction,

  PCl5(g) ⇌ PCl3(g) + Cl2 (g)

The forward reaction at constant temperature is favoured by:

1. Introducing an inert gas at a constant volume

2. Introducing chlorine gas at a constant volume

3. Introducing an inert gas at constant pressure

4. None of the above

Subtopic:  Le Chatelier's principle |
 66%
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The reaction quotient (Q) for the reaction, N2(g) + 3H2(g)       2NH3(g) is given by 

Q=NH32N2H23 The reaction will proceed towards the right side, if    

1. Q>Kc

2. Q=0

3. Q=Kc

4. Q<Kc

Subtopic:  Introduction To Equilibrium |
 74%
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In the dissociation of 2HI H2 + I2, the degree of dissociation will be influenced by the:

1. Addition of inert gas at constant volume

2. Addition of inert gas at constant pressure

3. Increase of temperature

4. Increase of pressure

Subtopic:  Kp, Kc & Factors Affecting them |
 59%
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Equimolar solutions of the following substances were prepared separetly. Which one of these will record the highest pH value?                                                                                             

1. BaCl2         

2. AlCl3         

 3. LiCl           

4. BeCl2

 

Subtopic:  Introduction To Equilibrium |
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The correct order of increasing [H3O+] in the following aqueous solutions is:

1. 0.01 M H2S < 0.01 M H2SO4<0.01 M NaCl<0.01M NaNO2

2. 0.01 M NaCl< 0.01 M NaNO2<0.01 M H2S< 0.01 M H2SO4

3. 0.01 M NaNO2<0.01 M NaCl<0.01 M H2S<0.01 M H2SO4

4. 0.01 M H2S<0.01 M NaNO2<0.01 M NaCl<0.01 M H2SO4

Subtopic:  Kp, Kc & Factors Affecting them |
 53%
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If the pressure of N2 and H2 mixture in a closed apparatus is 100 atm and 20% of the mixture then reacts, the pressure at  the same temperature would be:

1. 100                   

2. 90

3. 85                     

4. 80

Subtopic:  Introduction To Equilibrium |
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The following reactions are known to occur in the body,

    CO2 + H2OH2CO3H+ + HCO3-                 

If CO2 escapes from the system, then:

1. pH will decrease

2. hydrogen ion concentration will diminish

3. H2CO3 concentration will be unaltered

4. the forward reaction will be promoted

Subtopic:  Le Chatelier's principle |
 65%
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Which salt undergoes hydrolysis?

1. CH3COONa                                     

2. KNO3

3. NaCl                                               

4. K2SO4

Subtopic:  Acids & Bases - Definitions & Classification |
 78%
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