COMEDK · Chemistry · 33. Practical Chemistry
The metal hydroxide which is soluble in excess of ammonium hydroxide is
- A \(\mathrm{Fe}(\mathrm{OH})_{2}\)
- B \(\mathrm{Fe}(\mathrm{OH})_{3}\)
- C \(\mathrm{Cu}(\mathrm{OH})_{2}\)
- D \(\mathrm{Al}(\mathrm{OH})_{3}\)
Answer & Solution
Correct Answer
(C) \(\mathrm{Cu}(\mathrm{OH})_{2}\)
Step-by-step Solution
Detailed explanation
Copper (II) hydroxide \(\left[\mathrm{Cu}(\mathrm{OH})_{2}\right]\) is amphoteric in nature and is soluble in excess of ammonium hydroxide.
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Chemistry
- Consider the acid strength of the carboxylic acids.
\(\mathrm{~ I . ~ P h C O O H ~ I I . ~ o - N}\)
III. \(p-\mathrm{NO}_{2} \mathrm{C}_{6} \mathrm{H}_{4} \mathrm{COOH} \quad\) IV. \(m-\mathrm{NO}_{2} \mathrm{C}_{6} \mathrm{H}_{4} \mathrm{COOH}\)COMEDK 2015 Hard - The reaction of an organic compound with ammonia followed by nitration of the product gives a powerful explosive, called RDX. The organic compound isCOMEDK 2013 Hard
- In the chemical reaction, \(\mathrm{N}_{2}+3 \mathrm{H}_{2} \rightleftarrows 2 \mathrm{NH}_{3}\) at equilibrium point.COMEDK 2021 Medium
- A small segment of a polypeptide gave on complete hydrolysis 3 molecules of alanine, 2 molecules of glycine and 3 molecules of cysteine. What is the number of peptide linkages in the segment of the polypeptide?COMEDK 2026 Easy
- Identify the two incorrect electrochemical reactions shown as taking place in the given cells at the respective electrodes.
Cell Electrode Reaction Lead-Storage Cell Cathode \(Pb + 2SO_4^{2-} + 4H^+ + 2e^- \to PbSO_4 + 2H_2O + SO_2\) Leclanche Cell Cathode \(MnO_2 + NH_4^+ + 2e^- \to MnO + OH + NH_3\) Mercury Cell Anode \(Zn/Hg + 2OH^- \to ZnO(s) + H_2O + 2e^-\) Fuel Cell Cathode \(O_2(g) + 2H_2O + 4e^- \to 4OH^-\) COMEDK 2025 Medium - Methoxy methane and ethanol areCOMEDK 2017 Easy
More PYQs from COMEDK
- In an isochoric processCOMEDK 2015 Easy
- The hybridisation of atomic orbitals of nitrogen in \(\text{NO}_2^+\), \(\text{NO}_3^-\) and \(\text{NH}_4^+\) are respectivelyCOMEDK 2026 Medium
- Solution of \(x-y+z=4 ; x-2 y+2 z=9\) and \(2 x+y+3 z=1\) isCOMEDK 2023 Medium
- A current loop consists of two identical semicircular parts each of radius \(2 R\), one lying in the \(x-y\) plane and the other in \(x-z\) plane. If the current in the loop is \(I\), the resultant magnetic field due to two semicircular parts at their common centre isCOMEDK 2025 Medium
- A hockey player hits the ball at an angle of \(37^{\circ}\) from the horizontal with an initial speed of \(40 \mathrm{~m} / \mathrm{s}\) (a right angled triangle with one of the angle is \(37^{\circ}\) and their sides in the ratio of \(6: 8: 10\)). Assume that the ball is in a vertical plane. The time at which the ball reaches the highest point of its path isCOMEDK 2023 Easy
- Two statements, Assertion and Reason are given. Choose the correct option from the following.
Assertion: In the secondary structure of RNA, double helix structure is formed.
Reason: In the double structure of RNA, two nucleic acid chains are wound about each other and held together by hydrogen bonds between pairs of basesCOMEDK 2024 Easy