Advertisements
Advertisements
प्रश्न
Differentiate between in Chemical reaction and chemical equation.
Advertisements
उत्तर
| Chemical reaction | Chemical Equation |
| Any chemical change in matter which involves its transformation into one or more new substances is called a chemical reaction. | A chemical equation is the symbolic representation of a chemical reaction using the symbols and the formula of the substances involved in the reaction. |
APPEARS IN
संबंधित प्रश्न
Changes in which new substances are formed are called ______ changes.
Name three biochemical catalysts found in the human body.
Complete and balance the following chemical equations
Na + H2 O →
Write the missing reactants and products and balance the equations.
NaOH + ............... `→` NaCI + ...................
FILL IN THE BLANK
........... electrolytes dissociate completely in aqueous state and allow large amount of electricity to flow through it.
TRUE \ FALSE
A precipitation reaction takes place only in a solution.
TRUE \ FALSE
Ammonia is a good oxidizing agent.
Fill in the blank
A new substance is formed in a _______ change.
Give an example of a reaction where the following are involved
Light
Write the chemical reaction where the following changes are observed.
Gas is evolved
Match the chemical reactions in List I with the appropriate answer in List II.
| List I | List II | ||
| 1. | \[\ce{XY⇌[heat]X + Y}\] | A: | Displacement reaction |
| 2. | \[\ce{XY->X + Y}\] | B: | Double decomposition |
| 3. | \[\ce{X+Y- + A+B^-->X+B- + A+Y-}\] | C: | Endothermic reaction |
| 4. | \[\ce{X + YZ->XZ + Y}\] | D: | Thermal dissociation |
| 5. | \[\ce{X + Y->[heat]XY -\Delta}\] | E: | Decomposition reaction |
Give a balanced equation for the conversion of an ammonium salt to a basic gas.
Explain the following statement: Digestion is a chemical change.
Higher order Thinking question
A very hot glass on putting in cold water cracks. What does this change indicate?
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
Which of the following is a chemical change?
Which of the following statement is incorrect for a chemical reaction?
Write a note on the following:
Fermentation
Both CO2 and H2 gases are ______.
