List of top Chemistry Questions asked in MET

Solid N$_2$O$_5$ is
Suppose that gold is being plated on to another metal in an electrolytic cell. The half-cell reaction producing Au(s) is \[ \text{AuCl}_4^- \rightarrow \text{Au}(s) + 4\text{Cl}^- - 3e^- \] If a 0.30 A current runs for 15.00 min, what mass of Au(s) will be plated? (Faraday constant = 96485 C/mol, molar mass of Au = 197)
Which pair is usually required for a nucleophilic aromatic substitution reaction?
What is the cell potential (standard emf, $E^\circ$) for the reaction below? \[ E^\circ(\text{Fe}^{2+}/\text{Fe}) = 0.44\text{ V}, \quad E^\circ(\text{O}_2/\text{H}_2\text{O}/\text{OH}^-) = 0.40\text{ V} \] \[ 2\text{Fe}(s) + \text{O}_2(g) + 2\text{H}_2\text{O}(l) \rightarrow 2\text{Fe}^{2+}(aq) + 4\text{OH}^-(aq) \]
Potassium stearate is obtained by the saponification of an oil or fat. It has formula CH\(_3\)–(CH\(_2\))\(_{16}\)–COOK. The molecule has a lyophobic terminal CH\(_3\) and a lyophilic terminal –COOK. Potassium stearate is an example of
In physical adsorption, the adsorbent and adsorbate are held together by the
What reaction does hydroquinone undergo most readily?
What represents the best method for producing salicylic acid?
Which of the aromatic compounds react fastest with methoxide ion?
Which one of the following is the structure of polyacrylonitrile?
What is incorrect regarding natural rubber?
Which reagents would you use to carry out the reaction Ethyl benzene $\rightarrow$ 2 and 4-chloro-1-ethyl benzene?
Shown below are four possible synthesis of propionaldehyde. Which one would not work?
The compound C$_6$H$_5$CH = N – N = CHC$_6$H$_5$ is produced by the reaction of an excess of benzaldehyde with which compound?
Which of the following statements is not true for acetaldehyde?
The rate of a chemical reaction involving liquids only will not be influenced by the
Consider the following reaction in aqueous solution, \[ 5Br^- (aq) + BrO_3^- (aq) + 6H^+ (aq) \rightarrow 3Br_2 (aq) + 3H_2O (l) \] If the rate of appearance of Br\(_2\) at a particular moment during the reaction is \( 0.025 \, \mathrm{M \, s^{-1}} \), what is the rate of disappearance (in \( \mathrm{M \, s^{-1}} \)) of Br\(^- \) at that moment?
Equal moles of NO$_2$(g) and NO(g) are to be placed in a container to produce N$_2$O according to the reaction, \[ \text{NO}_2 + \text{NO} \rightleftharpoons \text{N}_2\text{O} + \text{O}_2, \quad K_c = 0.914 \] How many moles of NO$_2$ and NO be placed in the 5.0 L container to have an equilibrium concentration of N$_2$O to be 0.05 M?
The nitrite ion is represented by (I) [O — N = O]$^-$
(II) [N = O — O]$^-$
Which of the structures represents possible resonance forms of this ion?
When the substances CCl$_4$, CH$_4$ and CF$_4$ are arranged in order of increasing boiling point, what is the correct order?
Order the species CF$^+$, CF and CF$^-$ according to increasing C–F bond length
An atomic orbital has two angular nodes and one radial node. It is a
Which of the following sets of quantum numbers could represent the last electron added to complete the electron configuration for a ground state atom of Br (Z = 35) according to the Aufbau principle, $n ; l ; m_l ; m_s$
A substance is carried out through the given transformations.
The equation \( \Delta S_1 + \Delta S_2 = \Delta S_3 + \Delta S_4 + \Delta S_5 \)
At 298 K, the entropy of rhombic sulphur is 32.04 J mol\(^{-1}\) K\(^{-1}\) and that of monoclinic sulphur is 32.68 J mol\(^{-1}\) K\(^{-1}\). The heats of combustion are respectively \(-298246\) and \(-297948\) J mol\(^{-1}\). \( \Delta G \) for the reaction: S\(_{\text{rhombic}}\) \( \rightarrow \) S\(_{\text{monoclinic}}\) will be