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प्रश्न
Select the correct answer from the symbol in the bracket.
The element, which like hydrogen has one valence electron.
विकल्प
He
Na
F
O
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उत्तर
Na
APPEARS IN
संबंधित प्रश्न
Give a balanced chemical equation for the reaction.
Multiple Choice Question
Hydrogen is responsible for producing
Multiple Choice Question
Hydrogen is
MULTIPLE CHOICE QUESTIONS
The name hydrogen was given by
- Cavendish
- Lavoisier
- Haber
- none of these
FILL IN THE BLANK
The compounds of carbon and hydrogen are called .................
FILL IN THE BLANK
Ammonia is used to make ................
Why is hydrogen called a reducing agent? Give chemical equation to support your answer ?
Write the balanced equation and give your observation when the following metal reacts:
Sodium with cold water
Write the balanced equation and give your observation when the following metal reacts:
Calcium with cold water
Choose the correct option:
The composition of the nucleus of deuterium is
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).
Give a test to differentiate between two gas jars – one containing pure hydrogen and the other hydrogen-air mixture.
With reference to the equation : Cl2 + H2S → 2HCl + S pertaining to a redox reaction – select the correct answer.
Hydrogen sulphide is ______ to sulphur since the reaction involves ______ of hydrogen.
With reference to the equation : Cl2 + H2S → 2HCl + S pertaining to a redox reaction – select the correct answer.
Chlorine acts as an ______ agent.
Select the correct options for the following statement:
The gas which has now replaced hydrogen in air balloons is ___.
Explain the following:
Two jars of H2 are collected – “one burns quietly and the other does not”.
How would you obtain ‘hydrogen from sodium hydroxide’ solution other than by electrolysis?
Give balanced equation for obtaining hydrogen from cold water using a divalent active metal.
