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प्रश्न
Choose the correct option:
The composition of the nucleus of deuterium is
पर्याय
1 e- and 1P
1 P and 1 A
1 n and 1 e-
2P and 1 e-
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उत्तर
1 n and 1 e-
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संबंधित प्रश्न
Give reason for the following:
A pop sound produced when hydrogen is burnt?
Give reason for the following:
Helium replaced hydrogen in weather observation balloons?
MULTIPLE CHOICE QUESTIONS
Which is the lightest of all elements?
- hydrogen
- helium
- lithium
- none of these
FILL IN THE BLANK
The compounds of carbon and hydrogen are called .................
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 boiling water
Give the balanced equation of the reaction.
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).
With reference to the equation : Cl2 + H2S → 2HCl + S pertaining to a redox reaction – select the correct answer.
Chlorine acts as an ______ agent.
Give reason for the following:
The reaction of chlorine with hydrogen sulphide is deemed a redox reaction.
Match the statements in List I with the appropriate answer in List II.
| List I | List II |
| 1. An atom of hydrogen | A: Chromic oxide |
| 2. A strong oxidising agent | B: Ammonia |
| 3. A promoter used in Bosch process | C: Iron |
| 4. A chemical used in the manufavture of fertilizers | D: One electron |
| 5. The catalyst used in production of a basic gas from nitrogen. | E: Dilute nitric acid |
Give a chemical test to distinguish between the following gases:
Ammonia and hydrogen chloride
When steam is passed over red-hot iron, magnetic oxide of iron and hydrogen are obtained. “The reaction between steam and red-hot iron is a Reversible Reaction.” What is meant by this statement.
Write balanced equation for the following reaction:
magnesium + dil. hydrochloric acid → ___
Write correctly the balanced equation for the following:
‘When zinc filings are added to a concentrated solution of sodium hydroxide’.
Describe one chemical test applied to the following gases, which would enable you to distinguish between them :‘carbon monoxide and hydrogen’.
Complete and balance the following equations:
Al + NaOH + ____ → ____ + ____
Select the correct answer from the symbol in the bracket.
The element, which like hydrogen has one valence electron.
