List of top Chemistry Questions

A fast moving particle of mass 6.63×10-28g can be located with an accuracy of 1A. The uncertainty in its velocity (in ms-1) is about (h=6.63×10-34 Js)
From the following, choose the correct structures of chloroxylenol and terpineol, which are the constituents of "Dettol"
choose the correct structures of chloroxylenol and terpineol, which are the constituents of "Dettol"
A particle of mass 6.6×10-31kg is moving with a velocity of 1×107ms-1. The de Broglie wavelength (in A) associated with the particle, is (h=6.6×10-34 Js)
A di-negative ion of the element X consists of 10 electrons and 8 neutrons. A dipositive ion of the element Y consists of 12 protons. The number of neutrons in Y is 1.5 times the number of electrons in atom X. Then the mass numbers of X and Y would be in the ratio
Among the following pairs of compounds, the one that does not illustrate the law of multiple proportions, is
Which one of the following contains the highest number of oxygen atoms?
What is [NH₄⁺] in a solution that is 0.02 M NH₃ and 0.01 M KOH? $$ K_b (\text{NH}_3) = 1.8 \times 10^{-5} $$ 
The number of points, where the function $f: \mathbb{R} \to \mathbb{R}$, $$ f(x) = |x - 1|\cos|x - 2|\sin|x - 1| + (x - 3)|x^2 - 5x + 4|, $$ is NOT differentiable, is 
The molar conductivity is maximum for the solution of concentration
In fuel cell ___ are used as catalysts.

Which of the following colligative properties can provide molar mass of Proteins, Polymers and colloids with greater precision? 

Which of the following is NOT true about the amorphous solids ?

How many number of atoms are there in a cube based unit cell, having one atom on each corner and two atoms on each body diagonal of cube? 

Vacant Space in a body centered cubic lattice unit cell is about

Identify A and B in the reaction
Identify A and B in the reaction
Which of the following hybrides electron deficient?
In which of the following compounds, an element exhibits two different oxidation States ?

Which among the following has highest pH?

The IUPAC name for
4-oxopentanoic acid
Amphoteric Oxide among the oxide
In oxygen and carbon molecule the bonding is
Element X, Y and Z have atomic number 19, 37 and 55 respectively. Which of the following statements is true about them
If the wavelength of photon is \(2.2 \times 10^{-11}\) and \(h = 6.6 \times 10^{-34} \, \text{Js}\). Then momentum of photon
An Aqueous solution of Alcohol contains 18 g of water and 414 g of ethyl alcohol .The mole fraction of water is
The work done when 2 moles of an ideal gas expands reversibly and isothermally from a volume of 1L to 10L at 300 K is (R = 0.0083 kJK mol-1)