10th SCIENCE Metals and Non metals One Shot ASSERTION REASON QUESTIONS 🔥

Описание: 10th SCIENCE Metals and Non metals One Shot ASSERTION REASON QUESTIONS 🔥

ASSERTION (A): The arrangement of metals in order of decreasing reactivities is called reactivity series.
ASSERTION (A): A list of common metals arranged in order of their decreasing reactivity is known as an activity series.
ASSERTION (A): All metals react with oxygen at the same rate.
ASSERTION (A): Aluminium oxide is an amphoteric oxide.
ASSERTION (A): Aluminum oxide and zinc oxide are acidic in nature.
ASSERTION (A): Anodising is a method to prevent metal from corrosion.
ASSERTION (A): Bromine cannot displace chlorine from its salt solution.
ASSERTION (A): Bronze is an alloy of copper and tin.
ASSERTION (A): C and N do not react with dil. HCl and dil. H₂SO₄.
ASSERTION (A): Calcium floats in water.
ASSERTION (A): Copper displaces silver from silver nitrate solution.
ASSERTION (A): Different metals have different reactivities with water and dilute acids.
ASSERTION (A): Electrovalency of Na is +1.
ASSERTION (A): Gold occurs in native state.
ASSERTION (A): Highly reactive metals are obtained by electrolytic reduction.
ASSERTION (A): Hydrogen gas is not evolved when a metal reacts with nitric acid.
ASSERTION (A): Ionic compounds have low melting and boiling points.
ASSERTION (A): Iron does not burn on heating but iron filings burn vigorously when sprinkled in the flame of the burner.
ASSERTION (A): Iron is the most widely used metal. But it is never used in its pure state.
ASSERTION (A): Magnesium chloride is an ionic compound.

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