Chemistry Test ...

Helium is the second most abundant element in the Universe. Yet, it is not the most abundant on Earth - Why?

Concentrated sulphuric acid has density of \(1.9 \mathrm{g} / \mathrm{mL}\) and \(99 \% \mathrm{H}_{2} \mathrm{SO}_{4}\) by mass. Calculate the molarity of the acid.

Heating Lithium in the presence of excess oxygen will form?

Arrange the following transition metal ions in increasing order of their magnetic moments.

1. Ti²⁺
2. V²⁺
3. Cr²⁺
4. Mn²⁺

Which of the following is the type of reaction for the formation of gaseous $Pt{O}_2$ at $1200°C$ or higher?

Which method is used for the purification of certain metals which uses metal and iodine to form a gaseous iodide?

Which of the following is an incorrect statement about the complex ion [Co(NH₃)₆]³⁺?

Which of the following compounds does not rotate the plane polarised light ?

Which of the following complex species is not expected to exhibit optical isomerism?

The heats of combustion of rhombic and monoclinic sulphur are −70960 and −71030 calorie respectively. What will be the heat of conversion of rhombic sulphur to monoclinic sulphur?