List of top Chemistry Questions

Select the substance which has only one Pi (π) bond in its molecule.
this on boiling with NaOH gives on boiling with NaOH gives
Olefin means
The isocyanates obtained in the reaction of Hoffman, Curtius, Lossen and Schimdt. Hydrolysed to give
Process in which solid is directly converted to vapors state is called
Which of the following reagents can convert acetone to acetic acid?
The correct order of increasing basicity of the given conjugate bases (R = CH3) is
When sodium acetate is added to acetic acid, the degree of ionisation of acetic acid
Phenolphthalein can be used to determine pH over the range of
The rays from the radioactive element which gets deflected to the positive pole under strong electric field are called
Which of the following relation between average life period (ℓ) and the disintegration constant (λ) and the disintegration constant (λ) of the radio element is correct
In paper chromatography, the stationary and mobile phases are
According to Henry's law, the volume of a gas dissolved in a solvent at a given temperature is
Osmotic pressure is a colligative property because it
Which of the following salt will have same value of Vant Hoff's factor, 'i' as that of K4[Fe(CN)6] ?
The relationship between equilibrium constant K and free energy change of the process is given by
Identify the correct statement regarding a spontaneous process
Which of the following species has the maximum bond order?
The least metallic of the S block element is
The molecular formula of dithionic acid is
A neutral atom (Atomic number > 1) consists of:
The total number of electrons that can be accomdated in the fourth principal energy level is____________
The values of four quantum numbers of valence electron of an element are n = 4, l = 0, m = 0 and \(s=+\frac{1}{2}\). The element is :
0.0025 has _________ significant figure
Which one of the following sets of elements has the strongest tendency to form negative ions in gaseous state?