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प्रश्न
Fill in the blank
Any matter which has a definite _______ but no definite shape is called a _______
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उत्तर
Any matter which has a definite volume but no definite shape is called a liquid.
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संबंधित प्रश्न
Fill in the blank :
The substances which can flow are called ________
Write true or false for each statement. Rewrite the false statement correctly.
Matter cannot exist in different states.
What is the scientific name of particles which make up mater?
The best evidence for the existence and movement of particles in liquids was provided by :
Name a non-metal which is a good conductor of electricity.
Name a non-metal which is a good conductor of electricity.
What is meant by saying that non-metals are brittle ?
Classify the following into metals, non-metals and metalloids:
Silicon, Mercury, Diamond, Sulphur, Iodine, Germanium, Sodium, Carbon, Magnesium, Copper, Boron, Helium
Which of the following statements are true for pure substances ?
- pure substances contain only one kind of particles
- pure substances may be compounds or mixtures
- pure substances have the same composition throughout
- pure substances can be exemplified by all elements other than nickel
Iron powder and sulphur powder were mixed together and divided into two parts A and B. When part A was heated strongly over a burner, then a substance C was formed. The part B was, however, not heated at all. When dilute hydrochloric acid was added to substance C, then gas D was evolved and when dilute hydrochloric acid was added to part B then gas E was evolved.
- What type of substance is B ?
- What type of substance is C ?
- Name the gas (i) D, and (ii) E ?
- State one characteristic property of gas D.
- Write one test to identify gas E.
How much water should be mixed with 12 mL of alcohol so as to obtain 12 % alcohol solution ?
The solubility of ammonium chloride in water at various temperatures is given below :
| Temperature | : | 10°C | 20°C | 40°C | 60°C | 80°C |
| Solubility | : | 24 g | 37 g | 41 g | 55 g | 66 g |
What mass of ammonium chloride would be needed to make a saturated solution of ammonium chloride in fifty grams of water at 40°C ?
Name the property of one of the constituents which can be used to separate a mixture of salt and iodine
How will you separate a mixture of iron filings, chalk powder and common salt ?
Rusting of an article made up of iron is called
Atoms or groups of atoms having a charge are called ______.
Intermolecular space is maximum in ______.
The pressure of gases does not depend on the temperature of the gas and the volume it occupies.
Write a scientific reason.
Lemon sherbat has sweet, sour and salty taste and it can be poured in a glass.
