Which composition will make the basic buffer?

1. 100 mL of 0.1 M HCl+100 mL of 0.1 M NaOH
2. 50 mL of 0.1 M NaOH+25 mL of 0.1 M CH3COOH
3. 100 mL of 0.1 M CH3COOH+100 mL of 0.1 M NaOH
4. 100 mL of 0.1 M HCl+200 mL of 0.1 M NH4OH

Subtopic:  Buffer |
 60%
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NEET - 2019
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pH of a saturated solution of CaOH2 is 9. The solubility product Ksp of CaOH2 is:

1. 0.5×10-10

2. 0.5×10-15

3. 0.25×10-10

4. 0.125×10-15

Subtopic:  pH calculation |
 66%
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NEET - 2019
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The conjugate bases of Bronsted acids H2O and HF are respectively:

1. H3O+ and H2F+, respectively.

2. OH- and H2F+, respectively.

3. H3O+ and F-, respectively.

4. OH- and F-, respectively.

Subtopic:  Acids & Bases - Definitions & Classification |
 72%
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NEET - 2019
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The pH of a 0.01 M NaOH (aq) solution will be:

1. 7.01

2. 2

3. 12

4. 9

Subtopic:  pH calculation |
 80%
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NEET - 2019
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Which of the following cannot act both as a Bronsted acid and as a Bronsted base?

1. HCO3-

2. NH3

3. HCl

4. HSO4-

Subtopic:  Acids & Bases - Definitions & Classification |
 71%
From NCERT
NEET - 2019
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The molar solubility of CaF2 (Ksp=5.3 x 10-11) in 0.1 M solution of NaF will be:

1. 5.3 x 10-11 mol L-1

2. 5.3 x 10-8 mol L-1

3. 5.3 x 10-9 mol L-1

4. 5.3 x 10-10 mol L-1

Subtopic:  Solubility Product |
 65%
From NCERT
NEET - 2019
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Given that the ionic product of NiOH2 is 2 x 10-15 .
The solubility of NiOH2 in 0.1 M NaOH is ;

1. 2 x 10-8 M

2. 1 x 10-13 M

3. 1 x 108

4. 2 x 10-13 M

Subtopic:  Solubility Product |
 68%
From NCERT
NEET - 2020
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The salt solution that is basic in nature is: 

1. Ammonium chloride.

2. Ammonium sulphate.

3. Ammonium nitrate.

4. Sodium acetate.

Subtopic:  Salt Hydrolysis & Titration |
 73%
From NCERT
NEET - 2020
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The solubility product for a salt of type AB is 4×10-8.  The molarity of its standard solution will be:
1. 2×10-4 mol/L

2. 16×10-16 mol/L

3. 2×10-16 mol/L

4. 4×10-4 mol/L

Subtopic:  Solubility Product |
 80%
From NCERT
NEET - 2020
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The pKb of dimethylamine and pka of acetic acid are 3.27 and 4.77 respectively at T (K).
The correct option for the pH of dimethylammonium acetate solution is:

1. 7.75 2. 6.25
3. 8.50 4. 5.50
Subtopic:  Salt Hydrolysis & Titration |
 61%
From NCERT
NEET - 2021
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