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प्रश्न
Select the appropriate option for the following statement:
The element which is a noble metal.
विकल्प
Boron
Chlorine
Potassium
Platinum
Radon
उत्तर
Platinuma.
APPEARS IN
संबंधित प्रश्न
Give an example of a metal which is a liquid at room temperature.
Fill in the blanks:
Metals are ________ conductors of heat and _________.
If an element has a low ionization energy then it is likely to be ______________ (metallic / non metallic).
State why concentrated sulphuric acid is not used for drying ammonia gas
Write the name and formulae of a non-metal hydride.
Name two metals which are used for making electric wires.
State any five physical properties of non-metals.
Name a non-metal that is liquid at room temperature
Write ‘true’ or ‘false’ for the following statement
Sodium can be cut with a knife.
Statements given below are incorrect. Write the correct statements :
Soda water is prepared by dissolving washing soda in water.
Tick (√) the most appropriate answer.
Sodium amalgam is prepared by dissolving sodium in :
Name a metal which is poor conductor of electricity :
Name a non-metal whose compounds help in the growth of plants.
State two important uses of following non-metal
iodine
Why are alloys made?
What is an amalgam? How does an amalgam different from an alloy?
Name:
a non- metal used in alloys
`Cl +e- → —`
How many valence electrons are present in:
(ii) non-metals?
Non-metals are non-malleable.
