MCQ
A large difference between the fourth and fifth ionization energies indicates the presence of
- A$5$ valence electrons in an atom
- B$6$ valence electrons in an atom
- ✓$4$ valence electrons in an atom
- D$8$ valence electrons in an atom
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$(A)$ Freezing of water to ice at $0^{\circ} C$
$(B)$ Freezing of water to ice at $-10^{\circ} C$
$(C)$ $N _{2}( g )+3 H _{2}( g ) \rightarrow 2 NH _{3}( g )$
$(D)$ Adsorption of $CO ( g )$ and lead surface
$(E)$ Dissolution of $NaCl$ in water

${C_{10}}{H_{22}} \xrightarrow{900\,K} {C_4}{H_8} + {C_6}{H_{14}}$
The rate of reaction when the concentration of $A$ is $0.01\, M$ is ............$\times 10^{-4}\,M/ \min$