List of top Chemistry Questions

Quartz is an example of:

Propionic acid and $KOH$ reacts to produce which one of the following?

$ H_{3}PO_{3}$ is:

Dehydration of alcohol involves:

Cadmium rods are used for which purpose?

Which of the following turns potassium dichromate paper green?

An asymmetric carbon atom is which:

The most reactive hydrocarbon is:

Which will have maximum ionization energy?

Among the following compounds which is planar in shape is:

Benzoic acid dissolved in benzene shows a molecular weight of:

The IUPAC name of $CH _{3}- \underset{\overset{|}{C}H_3}{\underset{\overset{|}{C}H_2}{CH}} - CH _{2}- CH _{2}( OH )- CH _{3}$

1 mole of $H_2$ and 2 moles of $I_2$ are taken initially in a 2 litre vessel. The number of moles of $H_2$ at equilibrium is 0.2. Then the number of moles of $I_2$ and HI at equilibrium is

The pH of a buffer containing equal molarconcentration of a weak base and its chloride ( $K_b$ for weak base = $2 \times 10^{-5}$, log 2 = 0.3) is

$CuSO_4 $ when reacts with KCN forms CuCN which is insoluble in water. It is soluble in excess of KCN due to the formation of the complex :-

In the silver plating of copper, $K[AG(CN)_2]$ is used instead of $AgNO_3. $ The reason is :-

Enzymes are made up of :-

Z in the above reaction sequence is :-

Reactivity order of halides for dehydrohalogenation is :-

Which of the following statements is true:-

van der Waals' real gas, act as an ideal gas, at which condition :-

Heat of combustion $ \Delta H^{\circ}$ for $ C ( s ), H _{2}( g )$ and $CH _{4}( g ) $ are -94,-68 and $-213 \,Kcal / mol $ then $\Delta H ^{\circ}$ for $C ( s )+2 H _{2}( g ) \to CH _{4}( g )$ is:-

In a closed insulated container a liquid is stirred with a paddle to increase the temperature which of the following is true : -

In electrolysis of NaCl when Pt electrode is taken then $H_2$ is liberated at cathode while with Hg cathode it forms sodium amalgam :-

In hydrogen atom, energy of first excited state is -3.4 eV. Then, KE of same orbit of hydrogen atom :-