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प्रश्न
Fill in the following blanks with suitable words :
Immiscible liquids are separated by using a .....................
उत्तर
Immiscible liquids are separated by using a separating funnel.
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संबंधित प्रश्न
Select the correct alternative
The molecules can move freely anywhere in
- gases
- liquids
- solids
- none of the above
Name the terms for the particles of matter which may or may not have independent existence.
Fill in the blank
Any matter which has a definite _______ but no definite shape is called a _______
What is meant by saying that metals are malleable and ductile ?
What is the other name for impure substances ? Give two examples of impure substances.
What are the three general classes of matter ? Give one example of each type.
The property/properties which enable copper metal to be used for making electric wires is/are :
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.
Which of the following represents the solubility of sugar in water at 20°C ?
Which one of the following is not a chemical change ?
State whether the following statement are true or false :
Salt and water can be recovered from an aqueous salt solution by the process of evaporation.
What is the general name of the process by which tea-leaves are separated from prepared tea ?
Describe a method to separate a mixture of common salt and sand.
The boiling point of liquid argon is :
Complete the given analogy.
Murukku from hot oil: ______:: Coffee powder residue from decoction: ______
Define the term matter.
The most reactive metal is ______.
Liquids have ______.
A teabag placed in a cup of hot water will diffuse into the water.
Define the term matter.
