Which of the following salts will give the highest pH in water?
1. KCl
2. NaCl
3. Na2CO3
4. CuSO4

Subtopic:  pH calculation |
 75%
From NCERT
AIPMT - 2014
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NEET 2023 - Target Batch - Aryan Raj Singh
Hints

For the reversible reaction:
N2(g) + 3H2(g) \(\rightleftharpoons\) 2NH3(g) + heat 

The equilibrium shifts in a forward direction:

1. by increasing the concentration of NH3(g)
2. by decreasing the pressure.
3. by decreasing the concentration of N2(g) and H2(g)
4. by increasing pressure and decreasing temperature.

Subtopic:  Le Chatelier's principle |
 84%
From NCERT
AIPMT - 2014
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

For a given exothermic reaction, Kp and Kp are the equilibrium constants at temperatures T1 and Trespectively. Assuming that the heat of reaction is constant in temperatures range between T1 and T2, it is a readily observation that:
1. Kp>Kp'
2. Kp<Kp'
3. Kp=Kp'
4. Kp=1Kp'

Subtopic:  Kp, Kc & Factors Affecting them |
 55%
AIPMT - 2014
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NEET 2023 - Target Batch - Aryan Raj Singh
Hints

Which of these is least likely to act as Lewis base?
1. F
2. BF3
3. PF3
4. CO

Subtopic:  Acids & Bases - Definitions & Classification |
 74%
From NCERT
AIPMT - 2013
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Hints

The strongest acid among the following compounds is:

1. HClO3 2. HClO4
3. H2SO3 4. H2SO4
Subtopic:  Ionisation Constant of Acid, Base & Salt |
 75%
From NCERT
AIPMT - 2013
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

pH of a saturated solution of Ba(OH)2 is 12. The value of solubility product Ksp of Ba (OH)2 is:
1. 3.3×10-7
2. 5.0×10-7
3. 4.0×10-6
4. 5.0×10-6

Subtopic:  Solubility Product |
 68%
From NCERT
AIPMT - 2012
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Equimolar solutions of the following substances were prepared separately. Which one of these will record the highest pH value?
1. BaCl2
2. AlCl3
3. LiCl
4. BeCl2

Subtopic:  pH calculation |
 56%
From NCERT
AIPMT - 2012
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NEET 2023 - Target Batch - Aryan Raj Singh
Hints

Buffer solutions have constant acidity and alkalinity because:
 

1. these give unionized acid or base on reaction with added acid or alkali.
2. acid and alkali in these solutions are shielded from attack by other ions
3. they have large excess of H+ or OH- ions
4. they have fixed  value of pH

Subtopic:  Buffer |
 57%
From NCERT
AIPMT - 2012
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

A buffer solution is prepared in which the concentration of NH3 is 0.30 M and the concentration of  NH4is 0.20 M. If the equilibrium constant, Kb for NH3 equals 1.8×10-5, then what is the pH of this solution? 
(log 1.8 = 0.25; log 0.67 = -0.176)

1.  9.43
2.  11.72
3.  8.73
4.  9.08

Subtopic:  Buffer |
 64%
From NCERT
AIPMT - 2011
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NEET 2023 - Target Batch - Aryan Raj Singh

The value of H for the reaction is less than zero. Formation of X2(g) + 4 Y2(g) 2XY4(g) will be favoured at:

1.  Low pressure and low temperature

2.  High temperature and low pressure

3.  High pressure and low temperature

4.  High temperature and high pressure

Subtopic:  Le Chatelier's principle |
 75%
From NCERT
AIPMT - 2011
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh