Advertisements
Advertisements
प्रश्न
What do you observe when Magnesium is heated and then tested with moist blue and red litmus – paper?
Advertisements
उत्तर
Magnesium : Red litmus turns blue.
APPEARS IN
संबंधित प्रश्न
State at least two ways of prevent rusting.
What happens when Sodium burns in oxygen ? Also give the balanced chemical equation for the reaction.
Fill in the blank space by choosing the correct word from the given list.
List: sulphurous, nitric acid, red lead oxide paint, oxygen, phosphoric
To prevent rusting, the underside of the ships is coated with __________________.
What is rusting?
State four ways of preventing rusting.
State how nitrogen is utilised by plants for their growth. Give a reason why nitrogen is used in flushing food packages.
Describe simple experiments to show the presence of -
oxygen and nitrogen component in air using a bell jar
In the laboratory preparation of oxygen from hydrogen peroxide answer the following:
Draw a neat labelled diagram for the method used in the above preparation.
Give the main experimental points only to demonstrate that candle-gains weight on burning.
In Rockets, along with fuel, oxygen is also carried for combustion – why?
