Please select a subject first
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Assertion: Temperature is the measure of heat energy.
Reason: Energy is the capacity to do work.
Concept: undefined >> undefined
The material which allows electric current to pass through it is called ______.
Concept: undefined >> undefined
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Flow of per unit time is called current ______.
Concept: undefined >> undefined
Before the discovery of electrons, it was considered that electric current is due to the flow of ______ charges.
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In the same way in chemistry, each element is denoted by a ______.
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Antimony has the highest tensile strength.
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What is the significance of the symbol of an element?
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Write a note on Greem symbols.
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Which letter is never used in any element symbol?
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What is the rarest natural element on the earth?
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Isotopes exist because atoms of the same element can have different numbers of ______.
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James Chadwick discovered the fundamental particle called proton.
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Write the properties of neutrons.
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Every liter of seawater contains ______ grams of dissolved salts.
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Acidity or indigestion in the stomach is due to excessive secretion of ______.
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When an acid reacts with a base, a neutralization reaction takes place to give salt and water.
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Which chemical is used to neutralize the acidic soil?
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Give an important use of neutralization reaction in daily life.
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How do treat effluents from the industries?
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