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प्रश्न
Complete and balance the following reaction:
NaCl(aq) + AgNO3(aq) →
उत्तर
NaCl(aq) + AgNO3(aq) → AgCl(aq) + NaNO3(aq)
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संबंधित प्रश्न
The chemical name of baking soda is ______.
When baking soda is mixed with lemon juice, bubbles are formed with the evolution of a gas. What type of change is it? Explain.
How do the following help in bringing about a chemical change?
pressure.
MULTIPLE CHOICE QUESTIONS
Tick the most appropriate answer
Which of the following is a reducing agent?
- oxygen
- chlorine
- hydrogen
- none of these
TRUE \ FALSE
Electrolytic refining is a method in which a thin coating of a metal is done over another metal.
TRUE \ FALSE
The evolution of a gas during a chemical reaction is shown by an arrow pointing downwards. True or false ?
What are the characteristics of a chemical reaction ? A chemical reaction is characterised by an irreversible change in which a new substance is formed.
State four conditions necessary for a chemical reaction to take place.
Name the type of chemical reaction shown by the following equation:
Fe + CuSO4 → FeSO4 + Cu
Match the pairs.
| a. | Photosynthesis | i. | Tendency to lose electrons |
| b. | Water | ii. | Reactant in combustion process |
| c. | Sodium chloride | iii. | Chemical change |
| d. | Dissolution of salt in water | iv. | Covalent bond |
| e. | Carbon | v. | Ionic bond |
| f. | Fluorine | vi. | Physical change |
| g. | Magnesium | vii. | Tendency to form anion |
What is a chemical reaction?
Give an example of a reaction where the following are involved
Electricity
Multiple choice:
A reaction of a type: AB + CD → AD + CD, involves
Name: A greenish-yellow gas.
Give a chemical test to distinguish between the following gases.
CO2 and SO2
Give a chemical test to distinguish between the following gases.
H2 and O2
Complete the table given below.
| Flame test for calcium chloride | Acid used for flame test |
Name the solid residual product formed reaction and state its colour during – thermal decomposition of the following substance.
Lead nitrate.
The changes in which new substance with new chemical properties are formed are ______.
Is the conversion of milk into ice cream a chemical change?
