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
Fill in the blanks :
Oxides of sulphur and nitrogen combine with rain water to form ___________ and _________ which cause ____________.
The process by which oxidation of food in our body takes place is
Write ‘True’ or ‘False’ in front of following statement.
Nitrogen is a gaseous non-metal essential for respiration.
What happens when Iron burns in oxygen ? Also give the balanced chemical equation for the reaction.
Tick (√ ) the most appropriate answer.
Galvanising is the process of coating iron with a layer of molten :
Write fully balanced equation for the following :
MgO + H2O →
State four ways of preventing rusting.
Write the balanced chemical equation of the manganese dioxide.
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:
State the method of collection of the oxygen gas giving reasons.
