Dimethyl glyoxime gives a red precipitate with Ni²⁺ ,
Dimethyl glyoxime gives a red precipitate with Ni²⁺ ,which is used for its detection .To get this precipitate readily the bast pH range is
Options
(a) < 1 (b) 2 – 3 (c) […]
Chemistry
In which of the following acid – base titration,pH is greater than 8
In which of the following acid – base titration,pH is greater than 8 at equivalence point
Options
(a) acetic acid versus ammonia (b) acetic acid versus sodium hydroxide (c) hydrochloric acid versus ammonia […]
In which one of the following is not a buffer solution
In which one of the following is not a buffer solution
Options
(a) 0.8 M H₂S + 0.8 M KHS (b) 2 M C₆H₅NH₂ + 2 M C₆H₅NH₃⁺Br⁻ (c) 3 M H₂CO₃ + […]
The solubility of CuBr is 2 ˣ 10⁻⁴ mol/L at 25⁰C. The Ksp value for CuBr is
The solubility of CuBr is 2 ˣ 10⁻⁴ mol/L at 25⁰C. The Ksp value for CuBr is
Options
(a) 4 ˣ 10⁻⁸ mol² L⁻² (b) 4 ˣ 10⁻⁴mol² L⁻² (c) 4 ˣ 10⁻¹¹mol² […]
The pH of solution containing 0.10 M sodium acetate and 0.03 M acetic acid is
The pH of solution containing 0.10 M sodium acetate and 0.03 M acetic acid is (pKa for CH₃COOH = 4.57)
Options
(a) 4.09 (b) 6.09 (c) 5.09 (d) 7.09
Correct Answer:
5.09
Explanation: […]
When the temperature of reactions will increases then the effect on pH value will
When the temperature of reactions will increases then the effect on pH value will
Options
(a) increases (b) decreases (c) first increases then decreases (d) remains same
Correct Answer:
decreases
Explanation:
No explanation […]
The pH value of 0.1 M NaOH solution is (when there is a given reaction
The pH value of 0.1 M NaOH solution is (when there is a given reaction [H⁺][OH⁻] = 10⁻¹⁴)
Options
(a) 13 (b) 12 (c) 11 (d) 2
Correct Answer:
13
Explanation:
No explanation […]
The unit in which the solubility product of barium phosphate is expressed as
The unit in which the solubility product of barium phosphate is expressed as
Options
(a) mol² dm⁻⁶ (b) mol³ dm⁻⁹ (c) mol⁴ dm⁻¹² (d) mol⁵ dm⁻¹⁵
Correct Answer:
mol⁵ dm⁻¹⁵
Explanation:
No explanation […]
Which of the following does not acts as Lewis acid
Which of the following does not acts as Lewis acid
Options
(a) BF₃ (b) SnCl₄ (c) CCl₄ (d) SF₃
Correct Answer:
CCl₄
Explanation:
No explanation available. Be the first to write the explanation […]
The solubility of BaSO₄, in water, is 2.33 ˣ 10⁻³ g/L.Its solubility product
The solubility of BaSO₄, in water, is 2.33 ˣ 10⁻³ g/L.Its solubility product will be (molecular weight of BaSO₄ = 233)
Options
(a) 1 ˣ 10⁻¹⁵ (b) 1 ˣ 10⁻¹⁰ (c) 1 ˣ […]