Which of the following are matters ? Chair, air, affection, smell, hate, almond, thoughts, cold, cold drink, fragrance of perfume.

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Chapter 1 NCERT Class 9 Science SOLUTIONS

1. Which of the following are matters ? Chair, air, affection, smell, hate, almond, thoughts, cold, cold drink, fragrance of perfume.

Question:

Which of the following are matters ? Chair, air, affection, smell, hate, almond, thoughts, cold, cold drink, fragrance of perfume.

Answer:

Matter: Chair, Air, Almond, Cold Drink, Fragrance of perfume.

More NCERT Questions

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(All Q's of this Chapter solved)

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Name A, B, C, D E and F in the following diagram showing change in its state.

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What Produces more severe burns, boiling water or steam.

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Why is ice at 273K more effective in cooling than water at the same temperature ?

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Give reason for confirmation— (a) Water is liquid at room temperature. (b) an iron almirah is solid at room temperature.

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What is the physical state of water at the following temperatures ? (a) 25°C (b) 0°C (c) 100°C

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Arrange the following matters according to increase of force between their particles. (a) Water (b) Sugar (c) oxygen

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Write the reasons for the following observations. (a) Naphthalene disappears with time without leaving any solid. (b) The smell of perfume reaches us even after sitting far away.

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Convert the following temperatures into Kelvin Unit. (a) 25°C (b) 373°C

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Convert the following temperatures into celsius unit— (a) 293K (b) 470K

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What type of Clothes should be wear in summer ?

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Why are we able to slip. Hot tea or milk faster from a saucer rather than a Cup?

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Why does our palm ful cold when we put some aceton or petrol or perfume on it ?

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How does the water kept in an earthen pot(matka) become cool during summer.

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Why does a desert cooler cool better on a hot dry day ?

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Suggest a method to liquify atmospheric gases.

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For any substance, why does the temperature remain. Constant during the change of state ?

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What is the physical state of water at : (a) 250ºC (b) 100ºC

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Convert the following temperature to celsius scale : (a) 300 K (b) 573 K

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Liquids generally have lower density as compared to solids. But you must have observed that ice floats on water. Find out Why?

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Give reasons : (a) A gas fills completely the vessel in which it is kept. (b) A gas exerts pressure on the walls of the container. (c) A wooden table should be called a solid. (d) We can easily move our hand in air but to do the same through a solid block of wood we need a karate expert.

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Tabulate the differences in the characteristics of states of matter. (b) Comment upon the following: Rigidity, Compressibility, fluidity, filling a gas container, shape, kinetic energy and density.

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The mass per unit volume of a substance is called density (density = mass/ volume). Arrange the following in order of increasing density-air, exhaust from chaimnays, honey, water, chalk, cotton and iron.

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What are the characteristics of the particles of matter?

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A diver is able to cut through water in a swimming pool. Which property of matter does this observation show ?

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The smell of hot sizzling foods reaches your several metres away, but to get the smell from cold, food, you have to go to close.

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