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प्रश्न
Name the following:
A metal used in flexible pipes.
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उत्तर
Lead
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संबंधित प्रश्न
Mark ‘T’ if the statement is true and ‘F’ if it is false.
Sodium is a very reactive metal. ( )
Mark ‘T’ if the statement is true and ‘F’ if it is false.
Copper displaces zinc from zinc sulphate solution. ( )
What happens when Iron nails are placed in copper sulphate solution?
Write word equations of the reactions involved.
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 two important uses of following metal
Uses of tin
State two important uses of following metal
Uses of magnesium
Give the general characteristics of:
Alkaline earth metals with reference to
(i) bonding
(ii) action of air
(iii) action of water
(iv) action of acid
Take an element from an alkali metal and one from an alkaline earth metal and write an equation for their action with:
Hydrochloric acid,
Write scientific reason.
Generally the ionic compounds have high melting points.
Write scientific reason.
Sodium is always kept in kerosene.
What is it made from? Why?
Electric cables
What is it made from? Why?
Pots and pans
With reference to the following metals state their use in daily life metal:
copper
With reference to the following metals state their use in daily life metal:
Aluminium
Give a reason why a green deposit is seen on the surface of an article of copper
Name the following:
A halogen which is a solid at room temperature.
Complete the following flow chart.
Why are metalloids called semimetals?
X [2, 8, 7] and Y [2, 8, 2] are two elements. Using this information, complete the following:
______ is the reducing agent.
