Select Question Set:
Q. No.Which reagent from the options provided is capable of differentiating between aldehydes and ketones during salt analysis?
1. Lucas test
2. Bromine water
3. 2,4-DNP test
4. Schiff's reagent
Subtopic: Detection of the functional groups |
59%
Please attempt this question first.
Hints
What is the purpose of the borax bead test?
1. To identify the presence of specific metallic ions
2. To determine the acidity of a solution
3. To test for the presence of organic compounds
4. To measure the concentration of a solute
1. To identify the presence of specific metallic ions
2. To determine the acidity of a solution
3. To test for the presence of organic compounds
4. To measure the concentration of a solute
Subtopic: Detection of extra elements |
81%
Please attempt this question first.
Hints
What is the role of borax (sodium borate) in the borax bead test?
1. It acts as a flux to facilitate the formation of a bead.
2. It acts as an indicator for pH changes.
3. It reacts with metal ions to form colored complexes.
4. It stabilizes the flame during heating.
1. It acts as a flux to facilitate the formation of a bead.
2. It acts as an indicator for pH changes.
3. It reacts with metal ions to form colored complexes.
4. It stabilizes the flame during heating.
Subtopic: Detection of extra elements |
Please attempt this question first.
Hints
What color does acetate turn when it reacts with a neutral ferric chloride solution?
1. Blue
2. Yellow
3. Deep red
4. Green
1. Blue
2. Yellow
3. Deep red
4. Green
Subtopic: Detection of Anions |
55%
Please attempt this question first.
Hints
Which gas gives dense white fumes when reacted with ammonium hydroxide?
1. Oxygen gas
2. Hydrogen gas
3. HCl gas
4. Ammonia gas
1. Oxygen gas
2. Hydrogen gas
3. HCl gas
4. Ammonia gas
Subtopic: Detection of Anions |
79%
Please attempt this question first.
Hints
What color precipitate indicates the presence of phosphate ions in the test solution containing ammonium molybdate solution,conc. HNO3 and boil to the test solution containing phosphate ions?
1. Blue
2. Canary yellow
3. Red
4. Green
1. Blue
2. Canary yellow
3. Red
4. Green
Subtopic: Detection of Anions |
86%
Please attempt this question first.
Hints
What substance is introduced following dilute HCl in the procedure to verify
1. Distilled water
2. Carbon disulphide
3. Bromine water
4. Iodine crystals
the presence of halogens in the layer Test?
1. Distilled water
2. Carbon disulphide
3. Bromine water
4. Iodine crystals
Subtopic: Detection of Anions |
55%
Please attempt this question first.
Hints
What colour indicates the presence of bromide ions in the layer's test?
1. Orange
2. Violet
3. Blue
4. Green
1. Orange
2. Violet
3. Blue
4. Green
Subtopic: Detection of Anions |
68%
Please attempt this question first.
Hints
During the borax bead test with \(\mathrm{CuSO}_4\), a blue-green colour of the bead is observed in oxidizing flame due to the formation of:
1. \(\mathrm{CuO}\)
2. \(\mathrm{Cu}\left(\mathrm{BO}_2\right)_2\)
3. \(\mathrm{Cu} \mathrm{~B02}\)
4. \(\mathrm{Cu}\)
1. \(\mathrm{CuO}\)
2. \(\mathrm{Cu}\left(\mathrm{BO}_2\right)_2\)
3. \(\mathrm{Cu} \mathrm{~B02}\)
4. \(\mathrm{Cu}\)
Subtopic: Preparation of the Organic and Inorganic compounds |
85%
Please attempt this question first.
Hints
Which of the following is a chemical property of Mohr's salt?
| 1. | It effloresces in dry air |
| 2. | It decomposes upon heating to produce sulfur dioxide gas |
| 3. | It has a density of approximately 2.22 g/cm³ |
| 4. | It is soluble in nonpolar solvents like benzene |
Subtopic: Preparation of the Organic and Inorganic compounds |
61%
Please attempt this question first.
Hints
Select Question Set:
© 2025 GoodEd Technologies Pvt. Ltd.