Chemistry Test-...

Which of the following statements regarding photochemical smog is not correct?

The vapour pressure of two pure liquids A and B are 100 and 80 torr respectively. The total vapour pressure of solution obtained by mixing 2 moles of A and 3 moles of B would be:

\(28\) g \(N _{2}\) and \(6.0\)g of \(H _{2}\) are heated over catalyst in a closed one litre flask of \(450^{\circ} C\). The entire equilibrium mixture required \(500 mL\) of \(1.0 M\) \(H _{2} SO _{4}\) for neutralisation. The value of \(K _{ c }\) for the reaction

\(N _{2}( g )+3 H _{2}( g ) \rightleftharpoons 2 NH _{3}( g )\) is

For the feasibility of a redox reaction in a cell, the emf should be:

A radioactive material of half-life \(T\) was produced in a nuclear reactor at different instants, the quantity produced second time was twice of that produced first time. If now their present activities are \(A _{1}\) and \(A _{2}\) respectively then their age difference equals:

Oxidation state of \(\mathrm{N}\) in \(\mathrm{NO}_{4}^{+}\) is:

Metals are refined by using different methods. Which of the following metals are refined by electrolytic refining?

(i) Au

(ii) Cu

(iii) Na

(iv) K

An increase in the concentration of the reactantsof a reaction leads to change in:

Lindane can be obtained by the reaction of benzene with: 

Which of the following is the atomic number of an element that forms basic oxide?