Choose physical process:

Choose chemical process:

In which conditions iron turns to rust

Choose metal which reacts with water at normal temperature and produces alkali

Choose amphoteric oxide

Choose acidic oxide

Choose basic oxide:

Which chemical element demonstrates a single possible oxidation state in compounds:

Choose the maximal oxidation state for chlorine:

In which compound can you find at least one covalent nonpolar bond:

Choose compound with covalent polar bond

Choose binary compound with ionic bond

Choose phosphorus-containing compound

Which compound is composed of three atoms

Choose oxygen-containing compound

Choose compound

Choose pure chemical element

Translate this word into Russian: FIELD

Translate this phrase into Russian: NUCLEAR CHEMISTRY:

On going from right to left in a period in the periodic table, the electronegativity of the elements:

Of the following elements, which one has the highest electronegativity

Going from fluorine to chlorine, bromine, and iodine, the electronegativity

The compound which could not act both as oxidizing as well as reducing agent is

Select the correct charge of nitrogen in HNO₂

Select the correct charge of nitrogen in NH₃

Select the correct charge of nitrogen in N₂O₅:

Select the correct charge of nitrogen in NO₂:

M³⁺ ion loses 3e⁻. Its oxidation number will be

The oxidation number of sulphur in H₂S₂O₇ and iron in K₄Fe(CN)₆ is respectively

Amongst the following identify the species with an atom in +6 oxidation state:

The oxidation number of sulfur in S₈, S₂F₂, H₂S respectively, are:

When MnO₂ is fused with KOH, a coloured compound is formed. The product and its colour are:

In the equation

Which one of the following nitrates will leave behind a metal on strong heating?

Prevention of corrosion of iron by zinc coating is called:

7. The metal used in galvanizing of iron is:

In which of the following reactions is there no change in valency?

The free energy change for a reversible reaction at equilibrium is:

To prevent rancidification of food material, which of the following is added?

Find the correct name of HClO₂

Find the correct name of HCl

Find the correct name of PCl₅:

Find the correct name of PCl₃

Find the correct name of BCl₃

Find the correct name of N₂O₄

Find the correct name of LiCl:

Find the correct name of NaCl

Find the correct name of MgBr₂:

Phosphorus pentachloride