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

Metal X burns vigorously when heated in air, whereas metal Y burns only when heated very strongly . Which of the following is the correct descending order of reactivity of Metal X , metal Y , copper and magnesium . AMagnesium, metal X, metal Y , copper  BMetal X , magnesium , copper , metal YCcopper , metal Y , Metal X , magnesium DMetal X, magnesium , metal Y , copper

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

Zinc Oxide is a metal oxide. Which of the following term best describes the nature of Zinc Oxide?

Element X is below element Y in the same non-metallic group of the periodic table Aelement X will be more reactive than element YBelement X will be more electronegative than element YCelement Y will be a stronger oxidising agent than element XDboth elements X and Y will form covalent compounds only

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.