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प्रश्न
Explain the meaning of the term ‘matter’.
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उत्तर
The matter is defined as anything that has mass, occupies space, and can be felt by the senses.
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संबंधित प्रश्न
Which of the following materials fall in the category of a “pure substance”?
- Ice
- Milk
- Iron
- Hydrochloric Acid
- Calcium oxide
- Mercury
- Brick
- Wood
- Air
What is the other name for impure substances ? Give two examples of impure substances.
State any two properties for believing that aluminium is a metal.
The elements which normally exist in the liquid state are :
Out of a colloid, solution and a suspension :
which one has the smallest particles ?
Choose the correct answer.
A 5 per cent sugar solution means that :
Which of the following is a sol ?
Shaving cream, Milk, Fog, Soap solution, Hairspray
Milk of Magnesia is :
What difference in the property of two miscible liquids enables their separation by fractional distillation ?
What is the general name of the process by which tea-leaves are separated from prepared tea ?
What difference in the properties of oil and water enable their separation by a separating funnel ?
How is the impurity of iron present in several substances removed in industries ?
Asmita went to buy an earthen pot. There she saw many things kept for sale.
How did she identify what she needed?
Justify your answer.
| Figure 1 | Figure 2 | Figure 3 |
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The arrangement of particles in three different phases of matter is shown above.
- Which state is represented by Fig. 1?
- In which state will the inter-particle attraction be maximum?
- Which one of them cannot be contained in an open vessel?
- Which one can take the shape of its container?
Diffentiate between absorption and adsorption.
______ is so hard that it can scratch glass.
Celsius scale is a scale of temperature in which zero represents the melting point of ice and 100 represents the boiling point of water.
Atoms are tiny particles that repel each other when they are squeezed very close.
Higher the temperature, the higher the kinetic energy of particles.
The pressure of gases does not depend on the temperature of the gas and the volume it occupies.
