Advertisements
Advertisements
प्रश्न
Select the correct options for the following statement:
The gas which has now replaced hydrogen in air balloons is ___.
विकल्प
argon
helium
neon
Advertisements
उत्तर
The gas which has now replaced hydrogen in air balloons is helium.
APPEARS IN
संबंधित प्रश्न
Indicate which of the following statement is true and which is false:
Hydrogen gas is easily liquefiable.
Give reason for the following:
Helium replaced hydrogen in weather observation balloons?
MULTIPLE CHOICE QUESTIONS
The name hydrogen was given by
- Cavendish
- Lavoisier
- Haber
- none of these
FILL IN THE BLANK
In nature, hydrogen occurs as a .................. molecule represented as H2
Write the balanced equation and give your observation when the following metal reacts:
Calcium with cold water
Write the balanced equation and give your observation when the following metal reacts:
Magnesium with steam
Give a test to differentiate between two gas jars – one containing pure hydrogen and the other hydrogen-air mixture.
Give reason for the following:
The reaction of chlorine with hydrogen sulphide is deemed a redox reaction.
Give a chemical test to distinguish between the following gases:
Hydrogen and oxygen
Give balanced equation for obtaining hydrogen from cold water using a divalent active metal.
