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प्रश्न
A kind of matter which can sublime is
पर्याय
water
plastic
milk
iodine
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उत्तर
iodine
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संबंधित प्रश्न
Gases have definite volume but no definite shape.
Fill in the blank
Liquids have a definite ______
What are (i) metals (ii) non-metals, and (iii) metalloids ? Give two examples each of metals, non-metals and metalloids.
Which of the following are compounds ?
- CO
- No
- NO
- Co
In the following set of substances, one item does not belong to the set. Select this item and explain why it does not belong to the set :
Hydrogen, Oxygen, Steam, Chlorine
Out of a colloid, solution and a suspension :
which one has the smallest particles ?
State whether colloidal solutions are homogeneous or heterogeneous.
If 25 mL of acetone is present in 150 mL of its aqueous solution, calculate the concentration of solution.
What is the effect of temperature on the solubility of solids in liquids ?
Which one of the following is not a chemical change ?
Name the process you would use to separate a mixture of water and alcohol.
Name the process by which common salt is obtained from sea-water.
Name the process which can be used to purify an impure sample of copper sulphate.
Fill in the following blanks with suitable words :
A heterogeneous mixture of liquid and solid is conveniently separated by...............
How will you separate a mixture of iron filings and powdered carbon ?
Complete the following table:
| S.No. | CELSIUS | KELVIN |
| 1. | 90°C | 363 K |
| 2. | ______ | 283 K |
| 3. | 63 °C | ______ |
| 4. | 250°C | ______ |
| 5. | ______ | 303 K |
Intermolecular space is maximum in ______.
Solid is an arrangement of particles ______.
Higher the temperature, the higher the kinetic energy of particles.
Write a scientific reason.
Lemon sherbat has sweet, sour and salty taste and it can be poured in a glass.
