Advertisements
Advertisements
प्रश्न
Give a reason why rust turns moist red litmus blue.
Advertisements
उत्तर
A suspension of rust is basic in nature and hence turn moist red litmus blue.
APPEARS IN
संबंधित प्रश्न
Which of the following methods is suitable for preventing an iron frying pan from rusting?
In stainless steel alloy, iron metal is mixed with ______.
Explain with reason:
Roasting is carried out on sulphide ores and not on carbonate ores.
State whether the statement given below is true or false. If false write the correct statement.
Either oxygen or moisture is essential for rusting.
Rusting of iron : Fe2O3 : : corrosion of copper : ______
Explain concept with example/explain with the help of a balanced equation.
Corrosion
Write a molecular formula for rust.
The process of coating the surface of the metal with a thin layer of zinc is called ______
The table shown below gives information about four substances: A, B, C and D.
| SUBSTANCE | MELTING POINT (K) | ELECTRICAL CONDUCTIVITY | |
| SOLID | LIQUID/ AQUEOUS | ||
| A | 295 | Good | Good |
| B | 1210 | Poor | Good |
| C | 1890 | Poor | Good |
| D | 1160 | Poor | Poor |
Identify Ionic compounds from the above given substances.
Explain the following:
Bubbles are produced when acetic acid is added to a solution of sodium hydrogencarbonate.
