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What happens when metals react with water?
What happens when metals react with water?
Previous Year Question Papers | Science
What happens when metals react with water?

When a metal reacts with water, a metal hydroxide is generated, as well as hydrogen gas. The chemical reactivity of a metal determines the degree of its interaction with water. Some metals respond forcefully even when exposed to cold water, whereas others react only when exposed to hot water. Some metals react with steam, while others do not.

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At a certain location in Africa, a compass points $12^{\circ}$ west of the geographic north. The north tip of the magnetic needle of a dip circle placed in the plane of magnetic meridian points above the horizontal. The horizontal component of the earth’s field is measured to be $0.16 \mathrm{G} .$ Specify the direction and magnitude of the earth’s field at the location.At a certain location in Africa, a compass points $12^{\circ}$ west of the geographic north. The north tip of the magnetic needle of a dip circle placed in the plane of magnetic meridian points above the horizontal. The horizontal component of the earth’s field is measured to be $0.16 \mathrm{G} .$ Specify the direction and magnitude of the earth’s field at the location.