Chemistry Test ...

The correct order of bond energies of the following bonds is:

(I) C(sp³)-C(sp³), (II) C(sp²)-C(sp²), (III) C(sp)-C(sp)

A catalyst is added to a reaction to increase the rate of reaction. Which of the following statements is correct?

Directions: Match the order of the reaction from column - I with the reaction characteristics from column - II in the following table.

Directions: The following question has four choices out of which ONLY ONE is correct.

The experimental data for the reaction 2A + B₂$\to$2AB is given in the table below:

The rate equation for the above data is

We wish to see inside an atom. Assume the atom to have a diameter of 100 pm. This means that one must be able to resolve a width of say 10 pm. If an electron microscope is used, the energy required should be

The half-life of 131I is 8 days. If we have a sample of 131I at time t = 0, we can assert that

A radioactive nuclide can decay simultaneously by two different processes, which have individual decay constants \(\lambda_{1}\) and \(\lambda_{2}\). The effective decay constant of the nuclide ( \(\lambda\) ) is given by

The binding energies for nuclei ₁H¹, ₂He⁴, ₂₆Fe⁵⁶ and ₉₂U²³⁵ are 2.22, 28.3, 492 and 17.86 MeV, respectively. The most stable nucleus is

The binding energy per nucleon of ₁H² is 1.1 MeV and binding energy per nucleon of ₂He⁴ is 7 MeV. The energy released when two ₁H² combine to form ₂He⁴ is

For a certain radioactive substance, it is observed that after 4 hours, only 6.25% of the original sample is left undecayed. Which of the following statements is incorrect?