Given below are certain cations. Using inorganic qualitative analysis, arrange them in increasing group number from I to VI.
A. Al3+                   
B. Cu2+
C. Ba2+                 
D. Co2+
E. Mg2+
Choose the correct answer from the options given below 
1. B, C, A, D, E
2. E, C, D, B, A
3. E, A, B, C, D
4. B, A, D, C, E
Subtopic:  Detection of Cations |
 51%
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During the preparation of Mohr's salt solution (Ferrous ammonium sulphate), which of the following acid is added to prevent hydrolysis of Fe2+ ion?
1. Concentrated sulphuric acid 
2. Dilute nitric acid
3. Dilute sulphuric acid 
4. Dilute hydrochloric acid
Subtopic:  Preparation of the Organic and Inorganic compounds |
 52%
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In salt analysis, group V radicals (Ba2+,Ca2+ and Sr2+) are precipitated as their carbonates by adding solid NH4Cl and excess of NH4OH solution followed by solid (NH4)2CO3
Choose the correct reagent used for the confirmation of Ca2+ ion from the following:
1. Ammonium sulphate 2. Potassium chromate
3. Ammonium oxalate 4. Ammonium nitrate
Subtopic:  Detection of Cations |
 55%
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In salt analyses, Cl−,Br− and I− are identified by adding dilute HNO3 followed by AgNO3 solution to the salt solution.
Which of the following statements are correct?
A. Cl− gives pale yellow precipitate.
B. Br− gives pale yellow precipitate which is partially soluble in NH4OH.
C. I− gives yellow precipitate which is insoluble in NH4OH.
D. Cl− gives white precipitate which is insoluble in NH4OH.
E. I− gives purple violet gas.
Choose the correct answer from the options given below:
1. B and C only 2. A and B only
3. A and E only 4. D and E only
Subtopic:  Detection of Anions |
 59%
NEET - 2024
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