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प्रश्न
State the property of the following substance.
Sodium nitrate is soluble in water, but calcium carbonate is not.
पर्याय
Physical
Chemical
उत्तर
Physical
संबंधित प्रश्न
Give reasons
Liquids and gases flow but solids do not?
Complete the statement given below by selecting the correct word.
Solids and liquids have a definite ____ but gases do not.
State the property of the following substance.
Manganese dioxide, a catalyst which alters the rate of a chemical reaction is black in colour.
Complete the given analogy.
Large Inter-particle space: Gas:: ______ :solid.
Complete the given analogy.
Solid: Definite shape:: ______: Shape of the vessel.
Match the following.
| Srl. no. | A | B | C |
| i | Separation of visible undesirable components | Water mixed with chalk powder | Magnetic Separation |
| ii | Separation of heavier and lighter components | Sand and water | Decantation |
| iii | Separation of insoluble impurities | Iron impurities | Filtration |
| iv | Separation of magnetic components from non-magnetic components | Rice and stone | Hand-picking |
| v | Separation of solids from liquids | Husk and paddy | Winnowing |
The feather and paper cup can float on the water.
Gases have neither a definite shape nor a definite volume.
How the matter is grouped on the basis of physical states?
A strong current of trivalent gaseous boron passed through a silicon crystal decreases the density of the crystal due to part replacement of silicon by boron and due to interstitial vacancies created by missing Si atoms. In one such experiment, one gram of silicon is taken and the boron atoms are found to be 1000 ppm by weight, when the density of the Si crystal decreases by 12%. The percentage of missing vacancies due to silicon, which are filled up by boron atoms will be ____ g. [Given · Atomic wt. Si= 30, B = 11]
