Advertisements
Advertisements
प्रश्न
Write ‘True’ or ‘False’ in front of following statement.
Magnesium is used in making light weight alloys of aluminium.
विकल्प
True
False
उत्तर
True.
APPEARS IN
संबंधित प्रश्न
Mark ‘T’ if the statement is true and ‘F’ if it is false.
Sodium is a very reactive metal. ( )
Give reasons for the following.
Copper cannot displace zinc from its salt solution.
Which property of 'solder' alloy makes it suitable for welding electrical wires?
What is a thermite reaction? Explain with the help of an equation. State one use of this reaction.
Fill in the blank spaces by choosing the correct words from the given list.
List: amalgam, chlorine, gallium, sodium chloride, silver chloride
A solution of a metal in mercury is called ________
State two important uses of following metal:
Uses of silver
State two important uses of following metal
Uses of copper
State two important uses of following metal
Uses of tin
Take an element from an alkali metal and one from an alkaline earth metal and write an equation for their action with:
Water.
Write name.
The oxide that forms salt and water by reacting with both acid and base.
Write scientific reason.
Generally the ionic compounds have high melting points.
What is it made from? Why?
A pair of tongs.
What is it made from? Why?
Ornaments
Give a reason why iron objects rust easily but the iron pillar at Qutab Minar has not rusted over the years.
Name the following:
A halogen which is a solid at room temperature.
The minerals from which the metal can be separated economically are called _______.
An element forms an oxide A2O3 which is acidic in nature. Identify A as a metal or non-metal.
Name two major non-metals which are present in fertilisers and enhance the growth of plants.
Metals are ______ conductors of heat and electricity.
