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प्रश्न
Complete and balance the following reaction:
\[\ce{NH3 + O2 ->[\Delta]}\]
उत्तर
\[\ce{NH3 + O2 ->[Pt] 4NO + 6H2O }\]
APPEARS IN
संबंधित प्रश्न
Complete and balance the following chemical equations:
`"H"_2"S"` + `"CI"_2` `→`
MULTIPLE CHOICE QUESTIONS
Tick the most appropriate answer.
Compounds, which in their molten state allow an electric current to pass through them are called
- electrolytes
- non-electrolytes
- non-conductors
- none of these
FILL IN THE BLANK
Positively charged ions are called ........
Fill in the blank
A change in which the substance can be brought back to its original state is called a _______ change.
Fill in the blank:
The basic conditions necessary for a chemical reaction is _______
Choose the correct option from the bracket and explain the statement giving reason.
(Oxidation, displacement, electrolysis, reduction, zinc, copper, double displacement, decomposition)
The conversion of ferrous sulphate to ferric sulphate is ______ reaction.
Give an example of a reaction where the following are involved:
Solution
Give an example of the following chemical change.
Two solids combine to form a liquid
Give reason for the following:
Colourless concentrated sulphuric acid in a test tube changes to blue on adding a small piece of copper to it.
State the type of reactions for the following represent and balance the ones that are not balanced.
NaOH + HCl → NaCl + H2O
What do you observe when H2S is passed through a lead nitrate solution.
Give a chemical test to distinguish between the following gases.
HCl and H2S
Give a word equation for the following reaction.
An exothermic reaction where both the reactants are gases, one of which is oxygen.
Complete the table given below.
| Heat on Zinc nitrate | Colour of residue |
A chemical reaction is often accompanied by external indications or characteristics.
What kind of a change is associated with decaying of a plants?
Burning of paper is a ______ change.
Two chemical species X and Y combine together to form a product P which contains both X and Y
\[\ce{X + Y -> P}\]
X and Y cannot be broken down into simpler substances by simple chemical reactions. Which of the following concerning the species X, Y and P are correct?
(i) P is a compound
(ii) X and Y are compounds
(iii) X and Y are elements
(iv) P has a fixed composition
Which of the following is a chemical change?
Iron and rust are the same substances.
