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प्रश्न
Correct the following statement:
Hydrogen is dried by passing it through conc. H2SO4.
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उत्तर
Hydrogen is dried by passing it through calcium chloride, caustic potash, and phosphorous pentoxide.
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संबंधित प्रश्न
Multiple Choice Question
Hydrogen is responsible for producing
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
FILL IN THE BLANK
The compounds of carbon and hydrogen are called .................
FILL IN THE BLANK
Ammonia is used to make ................
Write the balanced equation and give your observation when the following metal reacts:
Magnesium with boiling water
Choose terms from the options given in brackets to complete this sentence.
A metal …………….. hydrogen in the activity series gives hydrogen with …………… acid or …………… acid.
(above, below, dilute hydrochloric, concentrated hydrochloric, dilute sulphuric).
How is hydrogen separated from carbon dioxide and carbon monoxide?
Give a test to differentiate between two gas jars – one containing pure hydrogen and the other hydrogen-air mixture.
Give balanced equation for the following conversion:
Iron [III] oxide to iron – using hydrogen.
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
What do the following symbols [or formula] denote : 2H ; H2 ; H+. [two atoms, molecule, ion]
Name a gas which burns in air or oxygen forming water.
Describe one chemical test applied to the following gases, which would enable you to distinguish between them :‘carbon monoxide and hydrogen’.
Write down the “word equation” for the following reaction:
sodium hydroxide solution + zinc → ?
Complete and balance the following equations:
Al + NaOH + ____ → ____ + ____
