Advertisements
Advertisements
प्रश्न
Name the following:
A halogen which is a solid at room temperature.
Advertisements
उत्तर
Iodine
APPEARS IN
संबंधित प्रश्न
Fill in the blanks:
Metals react with acids to produce _________ gas.
Mark ‘T’ if the statement is true and ‘F’ if it is false.
Sodium is a very reactive metal. ( )
State five uses of metals.
State one use of the following metal:
Silver
For the reduction of a metal oxide, suggest a reducing agent other than carbon.
Statements given below are incorrect. Write the correct statements :
Aluminium is best conductor of electricity.
Tick (√) the most appropriate answer.
Graphite is used :
State two important uses of following metal:
Uses of silver
State two important uses of following metal
Uses of tin
State two important uses of the following metal.
Uses of magnesium
Take an element from an alkali metal and one from an alkaline earth metal and write an equation for their action with:
Sulphuric acid
Why are alkali metals kept in kerosene oil?
Write scientific reason.
Generally the ionic compounds have high melting points.
Give reasons for the following:
Most metals conduct electricity well.
What is it made from? Why?
A pair of tongs.
What is it made from? Why?
Electric cables
State why telegraph poles are painted with aluminium paint.
Write the name.
Two highly reactive metals-
Write scientific reason.
Meena’s mother uses lemon or tamarind for cleaning copper vessels turned greenish.
Silver and copper are very good conductors of electricity.
