Advertisements
Advertisements
Question
Explain the following:
Lime water turns milky on passing carbon dioxide gas into it.
Advertisements
Solution
When carbon dioxide gas is passed through lime water, it turns milky because a white precipitate of calcium carbonate is formed.
Calcium hydroxide + Carbon dioxide → Calcium carbonate + Water
APPEARS IN
RELATED QUESTIONS
Tinning : Tin : : Galvanizing : _________
Tiffin boxes are electroplated with ______ but car bumpers are electroplated with ______ to protect them from rusting.
Name any two metals which do not corrode easily.
Observe the following picture a write down the chemical reaction with the explanation.
What is done to prevent corrosion of metals?
Write the name.
An alloy of copper and tin-
Write scientific reason.
Anodization method is useful for prevention of the corrosion of the aluminium.
State two conditions necessary for rusting of iron.
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.
State whether the following statement is true or false:
Ships suffer a lot of damage though they are painted.
