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Answers
Answer:
2. Don't smoke ! It's injurious to health.
3.She does not want to learn French . She's not interested .
4. She wants to play Basketball for her school . It'sher dream .
Explanation:
1.lodine
2.solids
3.when liquid change to solid
4.pressure
5
Question And Answer.
1. Which of the following does not show sublimation?
Ans. None of these. Sublimation is the process of a substance changing directly from the solid to the gas phase without passing through the intermediate liquid phase. Iodine and ammonium chloride produces fumes on gentle heating while sodium chloride does not sublime.
2.Which of the following possesses the least amount of kinetic energy?
Ans. A) Solid
Explantion-
Molecules in the solid phase have the least amount of energy, while gas particles have the greatest amount of energy. The temperature of a substance is a measure of the average kinetic energy of the particles.
3. Which of the following statements explains the process of freezing?
Ans. B) When Liquid Changes to solid
Explantion-
Freezing is the process that causes a substance to change from a liquid to a solid. Freezing occurs when the molecules of a liquid slow down enough that their attractions cause them to arrange themselves into fixed positions as a solid.
4. Kinetic energy is directly proportional to
Ans. C) Volume
Explantion-
Translational kinetic energy is directly proportional to mass and the square of the magnitude of velocity.
5. Which of the following apparatus is used to measure the volume of irregular solids?
Ans. C)Beaker
Explantion-
Measuring jar, scale, vernier calipers are used to measure the volume of an object. If the object is irregular, measuring jar is used and volume is measured by displacement method.