Metallurgy — Chemistry STD 10 — Question

Arrange the metals of copper, iron, magnesium, sodium and zinc in the decreasing order of reactivity.

The fundamental particles of the atoms that move when electric current is passed through a metal wire.

Give one example in the following case:
A basic oxide which is insoluble in water.

Identify the substance Q based on the information given below:
The pale green solid R turns reddish brown on heating. Its aqueous solution gives a white precipitate with barium chloride solution. The precipitate is insoluble in mineral acids.

Chorine in the periodic table is surrounded by the elements with atomic number 9, 16, 18 and 35.
Which of these have physical and chemical properties resembling chlorine.

Ethane, Ethene, Ethanoic acid, Ethyne, Ethanol
From the compounds given above, name
The compound with -COOH as apart of its structure.

What would you observe in the following case?
Hot concentrated sulphuric acid is added to sodium chloride crystals.

A noble gas having duplet arrangement of electrons.

Write the equation for the laboratory preparation of the following salts, using sulphuric acid.
Iron (II) sulphate from iron.