List of top Chemistry Questions

The unit of rate constant for reactions of second order is:
In a first order reaction with time the concentration of the reactant decreases:
Which of the following according to Le-Chatelier’s principle is correct?
The P–P angle in \( \mathrm{P_4} \) molecule and S–S–S angle in \( \mathrm{S_8} \) molecule (in degree) respectively are:
The efficiency of fuel cell is given by the expression \(\eta\) is:
The mass of the substance deposited when one Faraday of charge is passed through its solution is equal to:
Which of the following is the strong base?
Which of the following is the most basic oxide?
Ordinary glass is:
Semiconductor materials like Si and Ge are usually purified by:
Which one of the following does not follow octet rule?
Laughing gas is:
The anthracene is purified by:
The by-product of Solvay–ammonia process is:
Cobalt (60) isotope is used in the treatment of:
What is the correct increasing order of Brønsted basic strength?
The boiling points of alkyl halides are higher than those of corresponding alkanes because of:
Some salts containing two different metallic elements give test for only one of them in solution. Such salts are:
Polymer used in bullet proof glass is:
Which law of thermodynamics helps in calculating the absolute entropies of various substances at different temperatures?
Which of the following pollutants is the main product of automobile exhaust?
The element with atomic number 118 will be:
The disease caused by high concentration of hydrocarbon pollutants in atmosphere is/are:
The metal present in vitamin \(B_{12}\) is:
The colour of \(\text{CoCl}_3\cdot5\text{NH}_3\cdot\text{H}_2\text{O}\) is: