Chemistry Test ...

Which of the following is the most reactive non-metal?

The above reaction is named as:

(i) \(\mathrm{X}(\mathrm{g}) \rightleftharpoons \mathrm{Y}(\mathrm{g})+\mathrm{Z}(\mathrm{g}) \mathrm{K}_{\mathrm{p} 1}=3\)

(ii) \(\mathrm{A}(\mathrm{g}) \rightleftharpoons 2 \mathrm{~B}(\mathrm{~g}) \mathrm{K}_{\mathrm{p} 2}=1\)

If the degree of dissociation and initial concentration of both the reactants \(\mathrm{X}(\mathrm{g})\) and \(\mathrm{A}(\mathrm{g})\) are equal, then the ratio of the total pressure at equilibrium \(\left(\frac{p_1}{p_2}\right)\) is equal to \(x: 1\). The value of \(x\) is_________(Nearest integer)

All the oxides and hydroxides of Boron family are ____________ in nature.

Which of the following statement is not true about amorphous solids?

Calculate the number of \(\mathrm{kJ}\) of heat necessary to raise the temperature of \(60~\mathrm{g}\) of aluminium from \(35^{\circ} \mathrm{C}\) to \(55^{\circ} \mathrm{C}\). Molar heat capacity of \(\mathrm{Al}\) is \(\mathrm{24J ~ m o l}^{-1} \mathrm{K}^{-1}\).

When electromagnetic radiation of wavelength \(300 \mathrm{~nm}\) falls on the surface of sodium, electrons are emitted with a kinetic energy of \(1.68 \times 10^{5} \mathrm{~J} \mathrm{~mol}^{-1}\). What is the minimum energy needed to remove an electron from sodium?

In nitroprusside ion, the iron and NO exist as Fe(II) and \(NO^{+}\) rather than Fe(III) and NO. These forms can be distinguished by:

Molecules: General formula. (n represents the number of carbon atoms in chain)

1. Aldehydes: \(C _{ n } H _{2 n } O\)

2. Carboxylic acids: \(C _{ n } H _{2 n } O _{2}\)

3. Cycloalkanes: \(C _{ n } H _{2 n }\)

4. Alkanes: \(C _{ n } H _{2 n +2}\)

Which of the above matching is correct? Choose from the options given below:

In context with the transition elements, which of the following statements is incorrect?