Select Question Set:
Q. No. Mark the correct representation of the compound that is formed when \(\mathrm{AgCl}\) reacts with ammonia:
1. \(\left[\mathrm{Ag}\left(\mathrm{NH}_3\right)_2\right] \mathrm{Cl} \text { }\)
2. \(\left[\mathrm{Ag}\left(\mathrm{NH}_4\right)_2\right] \mathrm{Cl} \text { }\)
3. \(\left[\mathrm{Ag}\left(\mathrm{NH}_2\right)_2\right] \mathrm{} \text {Cl }\)
4. AgNO3
Subtopic: Detection of Anions |
79%
Please attempt this question first.
Hints
In the presence of zinc, what chemical process is hindered during the reaction involving aniline?
1. Reduction
2. Oxidation
3. Hydrolysis
4. Polymerization
1. Reduction
2. Oxidation
3. Hydrolysis
4. Polymerization
Subtopic: Preparation of the Organic and Inorganic compounds |
62%
Please attempt this question first.
Hints
What is the primary reason for using a reflux condenser in organic chemistry experiments?
1. To accelerate the reaction rate
2. To maintain a constant temperature
3. To minimize contamination
4. To prevent evaporation of reactants or solvents
1. To accelerate the reaction rate
2. To maintain a constant temperature
3. To minimize contamination
4. To prevent evaporation of reactants or solvents
Subtopic: Preparation of the Organic and Inorganic compounds |
57%
Please attempt this question first.
Hints
Mark the reaction that is incorrect regarding the confirmatory test for acetate ion:
| 1. |  |
| 2. |  |
| 3. |  |
| 4. |  |
Subtopic: Detection of the functional groups |
Please attempt this question first.
Hints
The correct representation of A and B in the following reaction are:
\(4 \mathrm{NaCl}+\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7+6 \mathrm{H}_2 \mathrm{SO}_4 \longrightarrow 2 \mathrm{KHSO}_4+\underset{\begin{array}{c} \text { (Chromyl } \\ \text { chloride) } \end{array}}{\mathrm{A}}+4 \mathrm{NaHSO}_4+3 \mathrm{H}_2 \mathrm{O} \)
\(\begin{aligned} & \left(\mathrm{CH}_3 \mathrm{COO}\right)_2 \mathrm{~Pb}+\underset{\begin{array}{c} \text { Sodium} \\ \text { chromate } \end{array}}{\mathrm{Na_2CrO_4}} \longrightarrow \underset{\begin{array}{c} \text { Lead chromate} \\ \text {(Yellow precipitate)} \end{array}}{\mathrm{B}}+~~2 \mathrm{CH}_3 \mathrm{COONa} \\ \end{aligned}\\ \)
1. CrO3 and PbCrO4
2. CrO2Cl2 and PbCrO4
3. Cr2O7 and Pb CrO4
4. Cr2O7 and PbCl2
\(4 \mathrm{NaCl}+\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7+6 \mathrm{H}_2 \mathrm{SO}_4 \longrightarrow 2 \mathrm{KHSO}_4+\underset{\begin{array}{c} \text { (Chromyl } \\ \text { chloride) } \end{array}}{\mathrm{A}}+4 \mathrm{NaHSO}_4+3 \mathrm{H}_2 \mathrm{O} \)
\(\begin{aligned} & \left(\mathrm{CH}_3 \mathrm{COO}\right)_2 \mathrm{~Pb}+\underset{\begin{array}{c} \text { Sodium} \\ \text { chromate } \end{array}}{\mathrm{Na_2CrO_4}} \longrightarrow \underset{\begin{array}{c} \text { Lead chromate} \\ \text {(Yellow precipitate)} \end{array}}{\mathrm{B}}+~~2 \mathrm{CH}_3 \mathrm{COONa} \\ \end{aligned}\\ \)
1. CrO3 and PbCrO4
2. CrO2Cl2 and PbCrO4
3. Cr2O7 and Pb CrO4
4. Cr2O7 and PbCl2
Subtopic: Detection of Anions |
92%
Please attempt this question first.
Hints
The ion that cannot be precipitated by both \(\mathrm{HCl} \text { and } \mathrm{H}_2 \mathrm{~S} \) is :
1. \(\mathrm{Pb}^{2+}\)
2. \(\mathrm{Cu}^{+2}\)
3. \(\mathrm{Ag}^{+}\)
4. \(\mathrm{Sn}^{2+}\)
1. \(\mathrm{Pb}^{2+}\)
2. \(\mathrm{Cu}^{+2}\)
3. \(\mathrm{Ag}^{+}\)
4. \(\mathrm{Sn}^{2+}\)
Subtopic: Detection of Cations |
Please attempt this question first.
Hints
Mark the incorrect one among the following reactions.
| 1. | \(\small{\mathrm{Na}_2 \mathrm{SO}_4+\mathrm{BaCl}_2\rightarrow \mathrm{BaSO}_4 \downarrow +2 \mathrm{NaCl} \text {. }}\\ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~\text { (White)}\) |
| 2. | \(\small{\mathrm{Na}_2 \mathrm{SO}_4+\left(\mathrm{CH}_3 \mathrm{COO}\right)_2 \mathrm{~Pb} \longrightarrow \mathrm{PbSO}_4 \downarrow+2 \mathrm{CH}_3 \mathrm{COONa}}\\~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(\text { White })\) |
| 3. | \(\small{\mathrm{PbSO}_4+2 \mathrm{CH}_3 \mathrm{COONH}_4 \longrightarrow\left(\mathrm{CH}_3 \mathrm{COO}\right)_2 \mathrm{~Pb} +\left(\mathrm{NH}_4\right)_2 \mathrm{SO}_4}\\~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\text { (Insoluble)}~~~~~~~~~~~~~~~\) |
| 4. | \(\small{\mathrm{BaSO}_4(\mathrm{~s})+\mathrm{Na}_2 \mathrm{CO}_3(\mathrm{~s}) \longrightarrow \mathrm{Na}_2 \mathrm{SO}_4+\mathrm{BaCO}_3\downarrow \text { (white) }}\) |
Subtopic: Detection of Anions |
64%
Please attempt this question first.
Hints
What is the correct formula for Sodium Nitroprusside?
1. \(\mathrm{Na}_2\mathrm{[Fe(C N)_5 \mathrm{NO}]}\)
2. \(K_2[\mathrm{Fe}(\mathrm{CN})_5 Cl]\)
3. \(\mathrm{Na}_2\left[\mathrm{Fe}\left(\mathrm{H}_2 \mathrm{O})_5 \mathrm{NO}\right]\right.\)
4. \(\mathrm{Na}_2[\mathrm{Mn}\mathrm{(CN)_5 \mathrm{Br}}]\)
Subtopic: Detection of Anions |
81%
Please attempt this question first.
Hints
Which gas, characterized by brisk effervescence, causes lime water to turn milky?
1. Nitrogen
2. Oxygen
3. Carbon dioxide
4. Hydrogen
1. Nitrogen
2. Oxygen
3. Carbon dioxide
4. Hydrogen
Subtopic: Detection of Anions |
95%
Please attempt this question first.
Hints
The colourless gas that evolved with the smell of rotten eggs is:
1. \(H_2\)
2. \(SO_2\)
3. \(H_2S\)
4. \(CO_2\)
1. \(H_2\)
2. \(SO_2\)
3. \(H_2S\)
4. \(CO_2\)
Subtopic: Detection of Anions |
90%
Please attempt this question first.
Hints
Select Question Set:
© 2025 GoodEd Technologies Pvt. Ltd.