Chemistry Test-...

Which of the following is the energy of a possible excited state of hydrogen?

The gas \(\mathrm{A}_{2}\) in the left flask is allowed to react with the gas \(\mathrm{B}_{2}\) present in the right flask as \((\mathrm{g}) ; \mathrm{K}_{\mathrm{c}}=4\) at \(27^{\circ} \mathrm{C} . \mathrm{A}_{2}(\mathrm{~g})+\mathrm{B}_{2}(\mathrm{~g}) \rightleftharpoons 2 \mathrm{AB}\). What is the concentration of \(\mathrm{AB}\) when the equilibrium is established?

According to Fajan's rule, which of the following ions shows the greatest polarising power?

For \(\mathrm{Na}+\mathrm{NH}_{3} \rightarrow(\mathrm{A}) \stackrel{\mathrm{N}_{2} \mathrm{O}}{\longrightarrow}(\mathrm{B}) \stackrel{\text { Heat }}{\longrightarrow} \operatorname{gas}(\mathrm{X})\)

Which of the following is correct?

Which one given below is a non-reducing sugar?

For the reaction,

\(\mathrm{C}+\mathrm{O}_{2} \longrightarrow \mathrm{CO}_{2} ; \quad \Delta \mathrm{G}=-393 \mathrm{~J}\)

\(2 \mathrm{Zn}+\mathrm{O}_{2} \longrightarrow 2 \mathrm{ZnO} ; \quad \Delta \mathrm{G}=-412 \mathrm{~J}\)

Which one is correct?

Polysubstitution is the drawback of which reaction?

Which of the following hormones is produced under the conditions of stress which stimulate glycogenolysis in the liver of human beings?

The elements with atomic numbers 117 and 120 are yet to be discovered. In which group would you place these elements when discovered?

Classical smog occurs in places of:

Positive Beilstein shows that:

Blood contains:

The commercial name of polyacrylonitrile is:

The complex that has highest crystal field splitting energy (Δ), is :

\(\mathrm{Al}^{3+}(\mathrm{aq})+3 \mathrm{e}^{-} \rightarrow \mathrm{Al}(\mathrm{s}) ; \mathrm{E}^{\circ}=-1.66 \mathrm{~V}\)

\(\mathrm{Cu}^{2+}(\mathrm{aq})+2 \mathrm{e}^{-} \rightarrow \mathrm{Cu}(\mathrm{s}) ; \mathrm{E}^{\circ}=+0.34 \mathrm{~V}\)

What voltage is produced under standard conditions by combining the half-reaction with these standard electrode potentials?