X is the base which is soluble in water. Then the metal present in the base is(1) aluminium (2) sodium (3) copper (4) iron

Metal X forms an oxide that reacts with acids but not with strong alkalis .  Metal y forms an oxide that reacts with acids and strong alkalisMetal Z forms a hydroxide that is not decomposed by heating Which combination BEST identifies X , Y and Z ? AX= calcium , Y = zinc , Z = magnesium BX= iron , Y = aluminium , Z = sodiumCX= aluminium , Y = sodium, Z = calcium DX= magnesium , Y = copper , Z = potassium

X is an artificial or man-made inorganic salt, that causes soil and water pollution and is soluble in water. Identify X.Select an answerACompostBVermicompostCFertilizerDManure

A base that dissociates entirely into metal ions and hydroxide ions is a(n) .

1. Element X is a metal that reacts to form XCl. It has the smallest metallic radius of its group. What is element X?LiCsFrH

When a metal X is treated with cold water, it gives a basic salt Y with molecular formulaXOH (Molecular mass = 40) and liberates a gas Z which easily catches fire. Identify X, Y andZ and also write the reaction involved.