Q. Soldering iron rods are made of iron with the tip made of

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Q. During boiling, temperature remains constant at the

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Q. During condensation temperature remains constant at the

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Q. The boiling point of mercury is

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Q. The reverse process of boiling is termed as

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Q. A typical graph of temperature against time is called the

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Q. When a pure liquid is heated and it changes to vapor at a fixed temperature, the state is called

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Q. The particular temperature at which the pure liquid is heated and it changes to vapor is known as

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Q. The change of state from vapor to liquid when a substance is cooled at the same constant temperature as in boiling is known as

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Q. In a meter rule, when the pivot is at the 50 cm mark, the ruler is

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Q. The center of gravity of an object depends on the distribution of its

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Q. If we place the pivot at a special position, its weight causes

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Q. The center of gravity of an object is usually located in the region where

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Q. When the object is pivoted at a corner, its weight causes

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Q. The point through which the whole weight of an object appears to act for any orientation is called its

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Q. The perpendicular distance between the pivot and the line of action of the weight W is

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Q. The highest point of transverse wave is called

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Q. The highest point o transverse wave is called

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Q. The highest point of longitudinal wave is called

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Q. Longitudinal waves move faster through

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