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प्रश्न
Fill in the following blanks with suitable words :
Immiscible liquids are separated by using a .....................
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उत्तर
Immiscible liquids are separated by using a separating funnel.
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संबंधित प्रश्न
Classify the following into elements, compounds and mixtures:
- Sodium
- Soil
- Sugar solution
- Silver
- Calcium carbonate
- Tin
- Silicon
- Coal
- Air
- Soap
- Methane
- Carbon dioxide
- Blood
Explain why, osmosis can be considered to be a special kind of diffusion. Classify the following into
(i) osmosis, and (ii) diffusion :
- swelling up of a raisin on keeping in water
- spreading of virus on sneezing
- earthworm dying on coming in contact with common salt
- shrinking of grapes kept in thick sugar syrup
- preserving of pickles in salt
- spreading of smell of cake being baked in the kitchen
- aquatic animals using oxygen dissolved in water during respiration
Which of the following are ‘pure substances’ ?
Ice, Milk, Iron, Hydrochloric acid, Calcium oxide, Mercury, Brick, Wood, Air
Explain why, hydrogen and oxygen are considered elements whereas water is not considered an element.
You are given two liquids, one a solution and the other a compound. How will you distinguish the solution from the compound ?
Name a metal which has a low melting point.
There are three substances X, Y and Z. The substance X does not have a fixed melting point or boiling point and it still shows the individual properties of its constituents. The substance Y is a pure substance which occurs in nature as such. The substance Y has a fixed melting point and boiling point but it cannot be broken down into simpler substances by any chemical means. The substance Z is also a pure substance whose properties are entirely different from those of its constituents. The substance Z can, however, be divided by electrolysis into two substances which belong to the same class of substances as Y.
- What type of substance could X be ? Name one substance like X.
- What type of substance could Y be ? Name one substance like Y.
- What type of substance could Z be ? Name one substance like Z.
- Which process involves absorption or release of an appreciable amount of energy : formation of substance X or formation of substance Z ?
- Name the three groups into which all the substances like Y are divided on the basis of their properties.
Out of a colloid, solution and a suspension :
which one has the largest particles ?
Which of the following contains less solute at a given temperature and pressure ? Unsaturated solution or Saturated solution.
What difference in the properties of oil and water enable their separation by a separating funnel ?
How is scrap iron separated from a heap of waste materials in factories?
Explain how, nitrogen , oxygen and argon gases are separated from air.
You are given a mixture of iodine in alcohol called tincture iodine. Which method will you use to recover both, iodine as well as alcohol, from this mixture ?
Differentiate between the-two characteristics of matter – ‘mass’ & ‘weight’.
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?
Liquids cannot be compressed and they have fixed volume.
Intermolecular space is maximum in ______.
A teabag placed in a cup of hot water will diffuse into the water.
The phenomenon of Evaporation takes place at the ______ of a liquid.
Examples of foam are ______.
