List of top Chemistry Questions

The cyclic \(π\)-molecular orbital formed by overlap of p-orbitals must contain,
Which of the following is NOT a redox reaction?
Which of the following statements are TRUE?
(I) Inductive effect operates through the sigma bond
(II) Resonance effect operates through the pi bond
(III) Inductive effects operate through the pi bond
(IV) Resonance effect operates through the sigma bond
Identify the reagent used in Etard reaction
Identify the false statement regarding chirality from the following.
Which of the following sentences is true for a basic solution?
What is the relationship between the degree of dissociation of a weak base and its concentration?
For a certain reaction \(\Delta H = -50\) kJ and \(\Delta S = -100\) J/K find the temperature so that the reaction is spontaneous.
Calculate the temperature of 2 moles of gas occupying a volume of 5.0 liters at 24.6 atmospheres?
(\(R = 0.0821\) L atm K\(^{-1}\) mol\(^{-1}\))
Calculate the enthalpy change of the reaction,
\(\text{H}_2\text{(g)}+\text{Cl}_2\text{(g)}\rightarrow 2\text{HCl(g)}\)
if bond energies (kJ mol\(^{-1}\)):
H–H = 436, Cl–Cl = 242, H–Cl = 431
Identify the type of hybridization of carbon that is attached to the OH group, in benzylic alcohol?
A weak monobasic acid is 0.04 % dissociated in 0.25 M solution. What is pH of the solution?
The electronic configurations of elements are as-
\(A = 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2\)
\(B = 1s^2 2s^2 2p^6 3s^2 3p^5\)
Which of the following is formula of ionic compound that could be formed between these two elements A and B?
What is the atomic number of an element having \(ns^1\) electronic configuration and belonging to 3d transition series?
Which of the following pairs represents isobars?
Which of the following contains maximum number of molecules?
What is the result when soap is used in hard water?
Which of the following statement about enzyme is correct ?
Which of the following is the monomer of Teflon polymer?
Buna - S is an example of ,
The number of primary isomeric alcohols of the molecular formula \(\text{C}_4\text{H}_{10}\text{O}\) is
When ethanal and propanal undergo aldol condensation with dilute NaOH, the pair of products obtained by cross condensation reaction is
In Gatterman reaction, which of the following catalyst is used?
What type of saccharide the maltose is?
What type of mechanism is followed by dehydration of alcohol to form ether?