Advertisements
Advertisements
Question
Soft metal : Na : : hard metal : _______
Solution
Soft metal : Na : : hard metal : Tungsten
APPEARS IN
RELATED QUESTIONS
Mark ‘T’ if the statement is true and ‘F’ if it is false.
Sodium is a very reactive metal. ( )
State one use of Iron.
State one use of Silver.
What is an amalgam?
What is a thermite reaction? Explain with the help of an equation. State one use of this reaction.
Give reasons
Graphite is used in the leads of pencils
Tick (√) the most appropriate answer.
Graphite is used :
Why is hydrogen placed with alkali metals?
Write scientific reason.
Pine oil is used in froth flotation.
What is it made from? Why?
Electric cables
With reference to the following metals state their use in daily life metal:
copper
Name the following:
The most reactive halogen.
Name the following:
A metal used in flexible pipes.
On heating which of the following substances i.e. copper carbonate, zinc carbonate, washing soda, copper sulphate, zinc nitrate, copper nitrate, lead nitrate, ammonium chloride and ammonium dichromate – relate to the reaction given below.
An amorphous substance which turns from pale green to black on strong heating evolving a colourless, acidic gas as the only gaseous product.
Electronic configuration of metal A is 2,8,1. Electronic configuration of metal B is 2,8,8,2. Which of the above metals is more reactive? Explain with reason.
What is ductility?
Metals are usually solids or gases at room temperature.
Which metals are not solid at room temperature?
Why are metalloids called semimetals?
