DELSU Chemistry 2021/2022 Past Questions

When platinum electrodes are used during the electrolysis of copper (II) tetraoxosulphate (IV) solution, the solution gets progressive

Which of the following physical properties decreases across the periodic table

Which of these has the lowest pH value?

The equation: $$^{14}_7N + ^4_2He \rarr ^{17}_{8}O + ^{1}_{1}P$$ represents

Which of the following is a general method of preparing acids?

Monosaccharide are

Which of the following is the pH of a strong alkali?

In an electrolytic cell the electrode at which the electrons enter the solution is called the ......; The chemical change that occurs at the electrode is call -----

the ionic radii of metals are usually

The number of isomers that can be obtained from C₄H₁₀ is