List of top Chemistry Questions

Which of the following is a example of co-polymer ?
The equilibrium constant for the following reaction is 1.6 ×105 at 1024 K.
\(H_2(g) + Br_2(g) ⇋ 2HBr(g)\)
Find the equilibrium pressure of all gases if 10.0 bar of HBr is introduced into a sealed container at 1024 K.

An organic compound with the molecular formula \( C_9H_{10}\)O forms \(2,4-DNP\) derivative,reduces Tollens’ reagent and undergoes Cannizzaro reaction.On vigorous oxidation,it gives \(1,2-benzenedicarboxylic\) acid.Identify the compound.
 

Give examples and suggest reasons for the following features of the transition metal chemistry: 

  1. The lowest oxide of transition metal is basic, the highest is amphoteric/acidic.
  2. A transition metal exhibits highest oxidation state in oxides and fluorides.
  3. The highest oxidation state is exhibited in oxoanions of a metal.
A compound $(X)$ with molecular formula $C_3H_9N$ reacts with $C_6H_5SO_2Cl$ to give a solid which is insoluble in alkali. $(X)$ is

Give one chemical test to distinguish between the following pairs of compounds. 
(i) Methylamine and dimethylamine 
(ii) Secondary and tertiary amines 
(iii) Ethylamine and aniline 
(iv) Aniline and benzylamine 
(v) Aniline and N-methylaniline

Total number of orbitals associated with third shell will b e ___________ .
Formation of interstitial compound makes the transition metal
Explain briefly how +2 state becomes more and more stable in the first half of the first row transition elements with increasing atomic number?

Explain why is ortho nitrophenol more acidic than ortho methoxyphenol.

Discuss the nature of bonding in metal carbonyls
What are the different types of RNA found in the cell ?
The outer electronic structure of $3s^23p^5$ is possessed by
The sum of protons,electrons and neutrons in the heaviest isotope of hydrogen is
What are interstitial compounds? Why are such compounds well known for transition metals?
The mole fraction of solute in 1 molal aqueous/solution is
Out of the 20 amino acids, only two of them contain sulfur. Those two amino acids are:
Atoms in a P4 molecule of white phosphorus are arranged regularly in the following way : 
Ethelene can be separated from acetylene by passing the mixture through : 
Of the following acids the one which has the capability to form complex compound and also possesses oxidizing and reducing properties is:
Propanal on treatment with dilute sodium hydroxide forms
Anhydride of $HClO_4$ is
The two strands in DNA are not identical but are complementary.Explain.
How do you explain the amphoteric behaviour of amino acids ?
What type of bonding helps in stabilising the ∝-helix structure of proteins ?