List of top Chemistry Questions asked in BHU

$0.42 \,g$ magnesium carbonate and $0.5\, g$ calcium carbonate are; heated strongly. What is the quantity left?

Morphine obtained from opium is

Cyano benzene has

The angular momentum of the electron in first excited energy state of hydrogen atom is

which of the following has $p \pi-d \pi$ bonding?

$ KO_{2} $ is used in oxygen cylinders in space and submarine because it:

On heating quick lime with coke in an electric furnace we get:

Molecule having least dipole moment is:

Among the following the weakest base is:

Work done during isothermal expansion of one mole of an ideal gas from $10$ atm to $1$ atm at $300\, K$ is:

H-bond is strongest in:

$ H_{2}O $ is liquid while $ H_{2}S $ is a gas due to:

$D_2O$ is used more in

The internal energy of one mole of ideal gas is