Advertisements
Advertisements
प्रश्न
Give a word equation for the following reaction.
Two gases which combine to give a solid.
Advertisements
उत्तर
Ammonia + Hydrogen chloride→ Ammonium chloride
NH3 (g) + HCl (g)→NH4Cl (s)
APPEARS IN
संबंधित प्रश्न
The gas we use in the kitchen is called liquefied petroleum gas (LPG). In the cylinder, it exists as a liquid. When it comes out from the cylinder it becomes a gas (Change − A), then it burns (Change − B). The following statements pertain to these changes. Choose the correct one.
Give one example that illustrates the following characteristics of a chemical reaction:
Change in state
TRUE \ FALSE
Electrolytic refining is a method in which a thin coating of a metal is done over another metal.
Explain the following reaction with one suitable example of Combination reactions .
Out of sodium and sulphur which is a metal? Explain its reaction with the oxygen.
Give an example of the following chemical change.
A reaction where colour change is noticed
Give reason for the following:
Silver nitrate solution is kept in coloured bottles.
State the type of reactions for the following represent and balance the ones that are not balanced.
NaOH + HCl → NaCl + H2O
Give an example of the following chemical changes.
A reaction where colour change is noticed.
Give one example electrochemical reaction.
Name: Two carbonates do not produce carbon dioxide on heating.
Complete the table given below.
| Heat on iodine crystals | Colour of vapours evolved |
Complete the table given below.
| Heat on copper carbonate | Test for gas evolved |
The chemical change is ______.
A reaction between an acid and a base is called ______.
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
If you leave a piece of iron in the open for a few days, it acquires a film of brownish substance, called rust.
Do you think formation of rust from iron is a chemical change?
The chemical formula of rust is ______.
Write a note on the following:
Fermentation
Write the characteristics of chemical change.
