List of top Chemistry Questions

If \(N_2\) gas is bubbled through water at 293 K, how many moles of \(N_2\) gas would dissolve in 1 litre of water? Assume that \(N_2\) exerts a partial pressure of 0.987 bar. [Given \(K_H\) for \(N_2\) at 293 K is 76.48 K bar]
The change in hybridisation (if any) of the 'Al' atom in the following reaction is
AlCl3 + Cl- → AlCl4-

The major product formed when 1 - Bromo-3-Chlorocyclobutane reacts with metallic sodium in dry ether is 

The IUPAC name of the given organic compound is HC \( \equiv \) C - CH = CH - CH\(_2\).
The organometallic compound (CH3)3CMgBr on reaction with D2O produces

Which of the following is not an aromatic compound? 

Match List-I with List-II and select the correct option: 

In the reaction between hydrogen sulphide and acidified permanganate solution,

Among the following, identify the compound that is not an isomer of hexane: 

For a given half cell, \( \text{Al}^{3+} + 3e^- \rightarrow \text{Al} \) on increasing the concentration of aluminium ion, the electrode potential will

Given below are the atomic masses of the elements: 

Which of the following doesn't form triad? 
 

A member of the Lanthanoid series which is well known to exhibit +4 oxidation state is
180 g of glucose, \(C_6H_{12}O_6\), is dissolved in 1 kg of water in a vessel. The temperature at which water boils at 1.013 bar is ______ (given, \(K_b\) for water is 0.52 K kg mol\(^{-1}\)). Boiling point for pure water is 373.15 K
Which one of the following reactions has
\(\Delta H = \Delta U\)?
According to the Heisenberg's Uncertainty principle, the value of \(\Delta v \cdot \Delta x\) for an object whose mass is \(10^{-6}\) kg is
In the titration of potassium permanganate (KMnO\(_4\)) against Ferrous ammonium sulphate (FAS) solution, dilute sulphuric acid but not nitric acid is used to maintain acidic medium, because

Match the following with their pKa values 

Variation of solubility with temperature \(T\) for a gas in liquid is shown by the following graphs. The correct representation is 

The electronic configuration of X and Y are given below:
X: 1s22s22p63s23p3
Y: 1s22s22p63s23p5
Which of the following is the correct molecular formula and type of bond formed between X and Y?
Catalysts are used to increase the rate of a chemical reaction. Because it
Identify the incorrect statements among the following:

Match List-I with List-II and choose the correct answer from the options given below. 

Which of the following statements are true about \( [NiCl_4]^{2-} \)?
(a) The complex has tetrahedral geometry.
(b) Co-ordination number of Ni is 2 and oxidation state is +4.
(c) The complex is sp\(^3\) hybridised.
(d) It is a high spin complex.
(e) The complex is paramagnetic.

Match the compounds given in List-I with the items given in List-II

Which of the following reagents are suitable to differentiate Aniline and N-methylaniline chemically?