Advertisements
Advertisements
प्रश्न
Name a non-metal which is a good conductor of electricity.
Write one example of a non-metal that is a good conductor of electricity.
Name the following:
Non-metal which is a conductor of electricity.
Advertisements
उत्तर
Graphite
APPEARS IN
संबंधित प्रश्न
The smallest unit of matter that exists freely in nature is called ...........
Define the following term of Matter .
Which one is a kind of matter:
Name one element, one compound and one mixture.
State two physical properties on the basis of which metals can be distinguished from non-metals.
Define a compound. Give two points of evidence to show that sodium chloride is a compound.
What is the most common way of expressing the concentration of a solution ?
Calculate the concentration of a solution which contains 2.5 g of salt dissolved in 50 g of water.
State whether the following statement is true or false :
Bread is an example of solid foam.
9.72 g of potassium chloride dissolves in 30 g of water at 70°C. Calculate the solubility of potassium chloride at that temperature.
One of the following liquids will leave behind a residue on heating. This one is :
Describe the various steps involved in the separation of iodine, iron filings and salt from a mixture.
With the help of a labelled diagram, describe the method of separating ammonium chloride from a mixture of ammonium chloride and common salt. Mention the difference in the properties of ammonium chloride and sodium chloride which has made this separation possible.
How is water purified on a large scale at water works ? Explain with the help of a labelled diagram. Name the substance which is added to kill germs in the drinking water supply ?
Wipe the board with a duster and then tap the duster against the table. What do you see?
The particles in the matter are extremely small and can be seen even with a powerful microscope.
Atoms or groups of atoms having a charge are called ______.
Intermolecular space is maximum in ______.
Write a scientific reason.
Lemon sherbat has a sweet, sour and salty taste and it can be poured in a glass.
Define the term matter.
