When an iron nail gets rusted, iron oxide is formed
A). Without any change in the weight of the nail
B). With decrease in the weight of the nail
C). With increase in the weight of the nail
D). Without any change in colour or weight of the nail
With increase in the weight of the nail
With increase in the weight of the nail.
1. the density of gas is maximum at
2. The density of the liquid when heated
3. Iron in hemoglobin exists as
4. The anode of a dry cell is made up of
5. Major gaseous pollutant of the thermal power station is
6. German silver an alloy does not contain the metal
7. Percentage of lead in lead pencils is
8. The polymerisation of which of the following is used in manufacturing of polythene in industry ?
9. When heated from 0° to 10°C volume of a given mass of water Will