Select Question Set:
Q. No.Sodium nitroprusside, when added to an alkaline solution of sulphide ions, produces purple colour ion due to formation of:
1. \(Na[Fe(H_2O)_5NOS]2 \)
2. \(Na_2[Fe(H_2O)_5NOS] \)
3. \(Na_3[Fe(CN)_5NOS] \)
4. \(Na_4[Fe(CN)_5NOS] \)
Subtopic: Detection of Anions |
65%
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
Two test tubes containing nitrate and bromide are treated separately with conc. H2SO4. Brown fumes, thus evolved, are passed in water. The water will be coloured by vapours evolved from the test tube containing:
1. Nitrate
2. Bromide
3. Both (a) and (b)
4. None of these
1. Nitrate
2. Bromide
3. Both (a) and (b)
4. None of these
Subtopic: Detection of Anions |
51%
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
The solution of a chemical compound (X) reacts with \(AgNO_3\) solution to form a white precipitate of (Y) which in turn dissolves in \(NH_4OH \) to give a complex (Z). When (Z) is treated with dilute \(HNO_3,\) (Y) reappears. The chemical compound X can be :
1. \(NaCl \)
2. \(CH_3Cl \)
3. \(NaBr \)
4. \(NaI \)
1. \(NaCl \)
2. \(CH_3Cl \)
3. \(NaBr \)
4. \(NaI \)
Subtopic: Detection of the functional groups |
74%
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
When dil. H2SO4 is introduced to an inorganic mixture at a low temperature, an odourless, colourless gas is produced. The mixture includes:
1. Sulphite
2. Acetate
3. Nitrite
4. Carbonate
1. Sulphite
2. Acetate
3. Nitrite
4. Carbonate
Subtopic: Detection of Anions |
74%
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
When bismuth chloride is poured into a large volume of water, the formula for the white precipitate produced is:
1. \(Bi(OH)_3\)
2. \(Bi_2O_3 \)
3. \(BiOCl \)
4. \(Bi_2OCl \)
1. \(Bi(OH)_3\)
2. \(Bi_2O_3 \)
3. \(BiOCl \)
4. \(Bi_2OCl \)
Subtopic: Detection of Cations |
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
A gas (X) is passed through water to form a saturated solution. The aqueous solution on treatment with silver nitrate gives a white precipitate. The saturated aqueous solution also dissolves magnesium ribbon with the evolution of a colourless gas (Y). X and Y, respectively, are:
1. \(X= CO_2,~Y=Cl_2 \)
2. \(X= Cl_2,~Y=CO_2 \)
3. \(X= Cl_2,~Y=H \)
4. \(X= H,~Y=Cl_2 \)
1. \(X= CO_2,~Y=Cl_2 \)
2. \(X= Cl_2,~Y=CO_2 \)
3. \(X= Cl_2,~Y=H \)
4. \(X= H,~Y=Cl_2 \)
Subtopic: Detection of Anions |
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
\(Cu^{2+}\) ions can be reduced to \(Cu^{+}\) ions by the addition of an aqueous solution of:
1. \(KF \)
2. \(KCl \)
3. \(KI \)
4. \(KOH \)
1. \(KF \)
2. \(KCl \)
3. \(KI \)
4. \(KOH \)
Subtopic: Detection of Cations | Detection of Anions |
63%
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
Aqueous solution of a salt when treated with \(AgNO_3\) solution gives a white precipitate, which dissolves in \(NH_4OH.\)
The ion present in the salt is:
1. \(Cl^-\)
2. \(NO_3^-\)
3. \(I^-\)
4. All the av
The ion present in the salt is:
1. \(Cl^-\)
2. \(NO_3^-\)
3. \(I^-\)
4. All the av
Subtopic: Detection of Anions |
79%
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
On adding \(KI\) solution in excess to a solution of \(CuSO_4\) we get a precipitate 'P and another liquor M. Select the correct pairs:
1. P is \(Cu_2I_2 \) and M is \(I_2\) solution
2. P is \(CuI_2 \) and M is \(I_2\) solution
3. P is \(Cu_2I_2 \) and M is \(KI_3\) solution
4. P is \(CuI_2 \) and M is \(KI_3\) solution
1. P is \(Cu_2I_2 \) and M is \(I_2\) solution
2. P is \(CuI_2 \) and M is \(I_2\) solution
3. P is \(Cu_2I_2 \) and M is \(KI_3\) solution
4. P is \(CuI_2 \) and M is \(KI_3\) solution
Subtopic: Detection of Anions |
54%
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
Which of the following anions gives colourless gas during the preliminary test?
(a) \(SO^{2-}_3\)
(b) \(SO^{2-} _4\)
(c) \(NO^-_2 \)
(d) \(CH_3COO^- \)
1. (a), (b) and (d)
2. (b) and (c)
3. (a), (b) and (c)
4. None of the above
(a) \(SO^{2-}_3\)
(b) \(SO^{2-} _4\)
(c) \(NO^-_2 \)
(d) \(CH_3COO^- \)
1. (a), (b) and (d)
2. (b) and (c)
3. (a), (b) and (c)
4. None of the above
Subtopic: Detection of Anions | Detection of extra elements |
70%
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
Select Question Set:
© 2025 GoodEd Technologies Pvt. Ltd.