Jamb Chemistry Past Paper (2014)

The IUPAC nomenclature of the compound above is

Due to the unstable nature of ethyne, it is stored by dissolving it in

Polystyrene is widely used as packaging materials for fragile objects during transportation because of its

$H_2O_{(g)} + C_{(s)} \rightarrow H_{2(g)} + CO_{(g)}$ The oxidizing agent in the reaction above is

The radioactive radiation used in studying the arrangement of particles in giant organic molecules is

An element X has electron configuration $1s^2 2s^2 2p^6 3s^2 3p^5$. Which of the following statements is correct about the element?

In an equilibrium reaction, which of the following conditions indicates that maximum yield of the product will be obtained?

$16.55 \text{g}$ of lead trioxonitrate (V) was dissolved in $100 \text{g}$ of distilled water at $25^\circ C$. Calculate the solubility of the salt in $\text{moldm}^{-3}$. $[\text{Pb} = 207, \text{N} = 14, \text{O} = 16]$

A silicon-containing ore consists of $92\%$ $^{28}Si$, $5\%$ $^{29}Si$ and $3\%$ $^{30}Si$. Calculate the relative atomic mass of the silicon.

Calculate the quantity of electricity in coulombs required to liberate $10 \text{g}$ of copper from a copper compound $[\text{Cu}=64, \text{F} = 96500 \text{ Cmol}^{-1}]$