Advertisements
Advertisements
प्रश्न
Name the following:
The most reactive halogen.
Advertisements
उत्तर
Fluorine
APPEARS IN
संबंधित प्रश्न
Mark ‘T’ if the statement is true and ‘F’ if it is false.
Sodium is a very reactive metal. ( )
Which property of graphite is utilised in making electrodes?
Fill in the following blank with suitable word:
The electrical conductivity and melting point of an alloy is ........... than that of pure metals.
Mention two uses of the following metals and non-metals
Gold
Mention two uses of the following metals and non-metals
Oxygen
A metal which is neither ductile nor malleable is
Statements given below are incorrect. Write the correct statements :
Bronze is a mixture of 10% copper, 80% zinc and 10% tin.
State two important uses of following metal
Uses of tin
State two important uses of following metal
Uses of magnesium
State two important uses of following metal
Uses of mercury
Write scientific reason.
Pine oil is used in froth flotation.
The electronic configuration of metal ‘A’ is 2,8,1 and that of metal ‘B’ is 2,8,2. Which of the two metals is more reactive? Write their reaction with dilute hydrochloric acid.
What is it made from? Why?
Ornaments
With reference to the following metals state their use in daily life metal:
Zinc
The most abundant metal in the earth’s crust is ____________.
Name one metal and one non-metal that exist in liquid state at room temperature. Also name two metals having melting point less than 310 K (37°C)
An element forms an oxide A2O3 which is acidic in nature. Identify A as a metal or non-metal.
Metals are usually solids or gases at room temperature.
Name two major non-metals which are present in fertilisers and enhance the growth of plants.
Sodium is a hard metal.
