Advertisements
Advertisements
प्रश्न
Explain the following:
Two jars of H2 are collected – “one burns quietly and the other does not”.
Advertisements
उत्तर
‘One burn quietly’ is pure hydrogen, and ‘which does not bum quietly’ is mixed hydrogen with air. It explodes on burning.
APPEARS IN
संबंधित प्रश्न
Complete and balance the following equation:
H2+____________→ 2HCI
Give a balanced chemical equation for the reaction.
Multiple Choice Question
Hydrogen is
MULTIPLE CHOICE QUESTIONS
Which is the lightest of all elements?
- hydrogen
- helium
- lithium
- none of these
FILL IN THE BLANK
Ammonia is used to make ................
Write the balanced equation and give your observation when the following metal reacts:
Sodium with cold 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).
Using a burning candle and a jar of hydrogen – how would you prove experimentally that Hydrogen is a combustible gas.
With reference to the equation : Cl2 + H2S → 2HCl + S pertaining to a redox reaction – select the correct answer.
Chlorine is ______ to HCl.
Give balanced equation for the following conversion:
Water gas to hydrogen – industrially.
Give balanced equation for the following conversion:
Iron [III] oxide to iron – using hydrogen.
Give a chemical test to distinguish between the following gases:
Ammonia and hydrogen chloride
Write balanced equation for the following reaction:
magnesium + dil. hydrochloric acid → ___
Name a gas which burns in air or oxygen forming water.
How would you obtain ‘hydrogen from sodium hydroxide’ solution other than by electrolysis?
Complete and balance the following equations:
Al + NaOH + ____ → ____ + ____
Describe briefly, with equations, the Bosch Process for the large scale production of hydrogen.
Give a reason for the following.
A mixture of hydrogen and chlorine can be separated by passage through a porous pot.
