List of practice Questions

Hydrolysis of diazonium salt produces

In the Williamsons synthesis for preparation of the compounds used are

The binary mixtures having the same composition in liquid and vapour phase and boil at a constant temperature are called

Molarity of 4.9g of H₂SO₄ in 250 cm³ solution is

The pH of 0.1 M solution of the following salts increases in the order

On the electrolysis of aqueous solution of Na₂SO₄, on cathode we get

Wooden artifacts and freshly cut tree having 7.6 and 15.2 counts min^-1 g ^-1 of carbon (t1/2 = 5700 years) respectively. Calculate the age of artifact.

In the phenomenon, in which a substance formed in the course of a reaction itself act as a catalyst is called

What is the mass of 0.5 mole of ozone molecule?

The hybridization of sulphur in sulphur dioxide is:

Hydrogen bonding is maximum in

Which parameter always increases during spontaneous change?

If an endothermic reaction is non-spontaneous at freezing point of water and becomes feasible at its boiling point, then

At constant T and P, which one of the following statements is correct for the reaction.
\(\text{CO}(g) + \frac{1}{2} \text{O}_2 \rightarrow \text{CO}_2(g)?\)

In a flask of 'V' litres, 0.2 moles of O₂, 0.4 moles of N₂, 0.1 moles of NH₃ and 0.3 moles of He gases are present at 27^oC. If total pressure exerted by these non-reaching gases is 1 atm, the partial pressure exerted by N₂ gas is

The density of O₂ is 16 at NTP. At what temperature its density will be 14?consider that the pressure remain the constant at

IUPAC name of element having atomic number 108 is

The hybridization of NH₃ and NO₂^-

One mole of oxygen gas at STP is equal to

Mean distance between atoms in the range of

When boron \(_{5}B^{10}\) is bombarded by neutron, alpha particles are emitted. The resulting nucleus has the mass number.