List of top Chemistry Questions

Which from following elements is NOT present in mustard gas?

Find the volume occupied by a particle in a simple cubic unit cell if the radius of a particle in it is 190 pm.

When excess of chlorine is used in the chlorination of methane find the major product obtained.

Which from following statements is NOT true about homologous series?

Which from the following is NOT polymorphic form of silica ?

Which of the following reactions is NOT an example of redox reaction?

What is IUPAC name of following compound?

Which among the following is haloalkyne?

Which of the following equations is used to obtain enthalpy change of a reaction?

\(V_0\) and \(V_t\) are volumes of an ideal gas at \(0 ^{\circ}\text{C}\) and \(t ^{\circ}\text{C}\) respectively, find ratio \(\frac{V_t}{V_0}\)

Which from following salts does not undergo hydrolysis ?

A system is provided 50 J of heat and work done on the system is 10 J. What is change in internal energy ?

Identify a molecule having highest dipole moment from following.

At \(25 ^{\circ}\text{C}\) standard enthalpy of combustion of \(\text{H}_2\), Cyclohexene and cyclohexane are -241, -3800 and -3920 kJ \(\text{mol}^{-1}\) respectively. What is the heat of hydrogenation of cyclohexene?

Calculate the number of molecules present in 2.24 \(\text{dm}^3\) of carbon dioxide at STP ?

Which of the following elements belongs to group 2 and sixth period of periodic table?

What is uncertainty in velocity of an electron if uncertainty in measurement of position is 50 pm ? \((m_e = 9.1\times 10^{-31}\text{kg}, h = 6.63\times 10^{-34}\text{Js}, π = 3.142)\)

The letter 'D' in carbohydrates signifies

Identify the polymer used to prepare plastic bottles needed to store cooking oil.

Which polymer is commonly used in nonstick cookwares ?

Which of the following is found to raise the HDL level in the blood?

Buna-S is prepared from

Which of the following molecules is capable of forming Zwitter ion?

Tertiary amines have the lowest boiling points because ,

Acetone on heating with \(\text{CrO}_3\) mainly forms,