List of top Chemistry Questions asked in BHU UET

The amount of heat released when $20\, mL$ of $0.5 \,M \,NaOH$ is mixed with $100 \,mL$ of $0.1 \,M \,HCl$ is $x \,kJ$. The heat of neutralisation (in $kJ \,mol ^{-1}$ ) is

For a gaseous reversible reaction, which of the following expressions is correct?

When phosphorus reacts with caustic soda, the products are $PH _{3}$ and $NaH _{2} PO _{2}$. This reaction is an example of

The long form of Periodic Table asked on

When lead nitrate is heated, it gives

With which of the given pairs CO$_2$ resembles in structure?

Total number of atoms represented by the compound $CuSO_4 . 5H_2O$ is

If $2.0 \,g$ of a radioactive isotope has a half-life of $20\, h$, the half-life of $0.25 \,g$ of the same substance is:

The material used in warfare in making smoke screens for military purposes is:

Glucose has difference from fructose in that it

The number of sodium atoms in 2 moles of sodium ferrocyanide is

The significant figure in 3400 are

The number of lattice arrangements in different crystal systems are:

If $20 \,g$ of a solute was dissolved in $500 \,mL$ of water and osmotic pressure of the solution was found to be $600\, mm$ of $Hg$ at $15^{\circ} C$, then molecular weight of the solute is:

The number of sodium atoms in $2$ moles of sodium ferrocyanide is:

According to Bohr's principle, the relation between principle quantum number $(n)$ and radius of orbit is :

The state of hybridisation of $B$ in $ BC{{l}_{3}} $ is:

Strongest nucleophile is:

Which solutions are mixed to form a buffer solution ?

Partial pressure of a solution component is directly proportional to its mole fraction. This statement is known as

Gas equation PV = nRT is obeyed by

The relationship which describes the variation of vapour pressure with temperature is called

Carbon atoms in benzene molecule are inclined at an angle of.

A fruity smell is obtained by the reaction of ethanol with

Lowering of vapour pressure is highest for