HARD
Earn 100
On performing the flame test salt produces a lilac / violet coloured flame and its solution gives a white precipitate with silver nitrate solution, which is soluble in ammonium hydroxide solution. Identify .
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Important Questions on Theoretical Principles of Experimental Chemistry
MEDIUM
State one relevant observation for of the following:
Anhydrous calcium chloride is exposed to air for some time.
HARD
Complete combustion of of an oxygen containing compound gave of and of The percentage of oxygen in the organic compound is :
EASY
Match List-I with List-II and select the correct answer using the codes given below.
| List I | List II | ||
| A. | Rinmann's green | 1. | |
| B. | Verdigris | 2. | |
| C. | Corrosive sublimate | 3. | |
| D. | Lithopone | 4. |
EASY
The hottest region of Bunsen flame shown in the figure below is:
MEDIUM
Which of the following salt gives white precipitate with solution and dil. solution and gives green flame test
MEDIUM
The dark red colour of bombs in fireworks is due to the presence of
MEDIUM
A pale yellow precipitate and a gas with pungent odour are formed on warming dilute hydrochloric acid with an aqueous solution containing :
HARD
Identify (W) to (Z) :
HARD
Statement I : Borax bead test is not suitable for Al(III).
Statement II : Al2O3 is insoluble in water.
MEDIUM
Which of the following sulphate is insoluble in water
EASY
A colourless gas with the smell of rotten fish is
EASY
When the salt is heated in a dry test tube sublimation yields a solid substance in the upper, colder parts of the test tube. The deposit is yellow in colour. Therefore salt contain
MEDIUM
On mixing two colourless gases, a deep brown colour is observed. The gases are
MEDIUM
When a substance 'A' reacts with water, it produces a combustible gas 'B' and a solution of substance 'C' in water. While another substance 'D' reacts with solution of 'C' to produce the same gas B on warming while 'D' can produce gas 'B' on reaction with dilute at room temperature. 'A' imparts a deep golden - yellow colour to a smokeless flame on Bunsen burner. Identify 'A', 'B', 'C' and 'D' respectively are
EASY
A salt gives bright red colour to the flame. This colour indicates the presence of
HARD
Which of the following precipitate does not dissolve even in large excess of dilute
MEDIUM
Which reagent is used to separate and
MEDIUM
Nitrates of all the metals are
EASY
The salt used for performing 'bead' test in qualitative inorganic analysis is
EASY
Which one of the following salt give green coloured flame when the salt is tested by wire
