List of top Chemistry Questions

Arrange the following compounds in increasing order of their reactivity towards \( S_N2 \) displacement: 2-Bromo-2-methylbutane, 1-Bromopentane, 2-Bromopentane.

In the following pair of halogen compounds, which compound undergoes \( S_N1 \) reaction faster and why?

The charge required for the reduction of 1 mol of \( MnO_4^- \) to \( MnO_2 \) is
Which among the following is a false statement?
The number of molecules that react with each other in an elementary reaction is a measure of the:
The element having \([Ar]3d^{10}4s^1\) electronic configuration is
The complex ions \([Co(NH_3)_5(NO_2)]^{2+}\) and \([Co(NH_3)_5(ONO)]^{2+}\) are called
The diamagnetic species is :
At. No. Co = 27, Fe =26, Ni= 28]

Which is the correct IUPAC name for
 

What will be formed after oxidation of secondary alcohol with chromic anhydride (CrO3)?
The conversion of phenol to salicylic acid can be accomplished by
Which of the following is/are examples of denaturation of protein?

Nucleotides are joined together by:

Scurvy is caused due to deficiency of:

Assertion (A): In a first order reaction, if the concentration of the reactant is doubled, its half-life is also doubled. 
Reason (R): The half-life of a reaction does not depend upon the initial concentration of the reactant in a first order reaction.

Assertion (A): Aromatic primary amines cannot be prepared by Gabriel Phthalimide synthesis. 
Reason (R): Aryl halides do not undergo nucleophilic substitution reaction with the anion formed by phthalimide.

Assertion (A): Vitamin D cannot be stored in our body. 
Reason (R): Vitamin D is fat-soluble vitamin and is not excreted from the body in urine.

An alkene A with molecular formula C\(_6\)H\(_{10}\) on ozonolysis gives a mixture of two compounds B and C. Compound B gives positive Fehling test and also reacts with iodine and NaOH solution. Compound C does not give Fehling solution test but forms iodoform. Identify the compounds A, B, and C.
Carry out the following conversion
Propanoic acid to Ethane
Carry out the following conversion
Ethanal to But-2-enal
Write the IUPAC name of the following complex:
[Co(NH₃)₅(CO₃)]Cl.
Why is a solution of Ni(H₂O)₆²⁺ green while a solution of Ni(CN)₄²⁻ is colourless? (At. No. of Ni = 28)
What type of isomerism is shown by the complex [Co(NH₃)₆][Cr(CN)₆]?
Answer the following:
Co\(^{2+}\) is easily oxidized to Co\(^{3+}\) in the presence of a strong ligand (At. No. of Co = 27).
Answer the following:
Low spin tetrahedral complexes are not known.