List of top Chemistry Questions

Which of the following compounds will show geometrical isomerism?  I. $(CH_{3})_{2}C=CH~C_{2}H_{5}$  II. $C_{6}H_{5}CH=CH~C_{2}H_{5}$  III. $C_{6}H_{5}CH=CH_{2}$  IV. $CH_{3}CH=C(Cl)CH_{3}$  The correct answer is:

The reduction products formed when copper and zinc metals are separately oxidised with dilute $HNO_{3}$ respectively are

Consider the following compounds: $H_{3}PO_{2}, Se_{2}Cl_{2}, HNO_{2}, HNO_{3}, H_{2}SO_{4}, H_{2}O_{2}$ How many of the above compounds undergo disproportionation reaction?

What are X and Y in the following set of reactions?


In which of the following set/s, reactant and reagent are correctly matched to get ethyl isonitrile as major product?
Consider the following reactions I, II and III. The correct order of reactivity of X, Y and Z towards $S_{N}1$ reaction is:
Which of the following structures represent an example of a tranquilizer?

What are X and Y respectively in the following set of reactions?
What are X and Y respectively in the following set of reactions?
Consider the reaction of Cumene: (i) $O_{2}$ (ii) $H_{3}O^{+} \rightarrow A + B$. A is acidic and forms a salt with NaOH. X and Y are reagents to convert A and B to hydrocarbons. What are X and Y?
The incorrect statement in the following is:
Match List - I with List - II:
Which of the following oxoacids of phosphorus has a peroxy ($O-O$) linkage present within its molecular structure?
Consider the following statements: Statement-I: Polystyrene is a thermosetting polymer. Statement-II: Bakelite is a thermoplastic polymer.
The metal ion, ligands present in Wilkinson catalyst are respectively
The ore calamine on calcination gives its oxide X. The common name of X is
At $T(K)$ adsorption of acetic acid on 1g of charcoal gave a Freundlich adsorption isotherm with slope of 0.5 and intercept of 1. What is the value of x, when the concentration of acetic acid is 0.1 mol $L^{-1}$? (Given: $\text{antilog}(0.5) [cite_start]= 3.162$; $\text{antilog}(0.301) = 2.0$)
In the Arrhenius equation, $\exp\left(-\frac{E_{a}}{RT}\right)$, is equal to
X, Y and Z represent three electrodes $Al^{3+}/Al$, $Cu^{2+}/Cu$ and $Ag^{+}/Ag$ with $E^{\circ}$ values -1.66, 0.34 and 0.80 V respectively. The correct order of oxidising power of these three electrodes is
A metal X of atomic mass 75 u forms a cubic lattice of edge length 5 Å. If the density of the lattice is 2 g cm$^{-3}$, the radius (in Å) of the metal atom is ($N=6\times10^{23} \text{ mol}^{-1}$)
Given below are two statements: Statement I: The electrical conductivity of a solution decreases with dilution. Statement II: The overall reaction in $H_{2}-O_{2}$ fuel cell is: $2H_{2}O(l)\longrightarrow2H_{2}(g)+O_{2}(g)$. The correct answer is:
An aqueous solution of a non-volatile and non-electrolytic solute boils at $100.5^{\circ}C.$ What will be the freezing point of the same solution? (Given $K_{b}=0.512~K$ kg $mol^{-1}$ and $K_{f}=1.86~K$ kg mol$^{-1}$)
The number of hyperconjugative hydrogens present in the product Y is \ $CH_{2}=CH_{2} \xrightarrow{\text{HBr}} X \xrightarrow[\text{Anhy. } AlCl_{3}]{C_{6}H_{6}} Y$
Total number of electrons involved in the formation of bridge bonds in the structure of diborane is
An organic compound containing an extra element E on reaction with $Na_{2}O_{2}$ followed by boiling with $HNO_{3}$ gives a compound. This on treatment with ammonium molybdate solution gives yellow precipitate. What is E?