Questions

1558 AD

Burns are classified into 4 degrees. They are ::

1. First-degree (superficial) burns. First-degree burns affect only the epidermis, or outer layer of skin.

2. Second-degree (partial thickness) burns. Second-degree burns involve the epidermis and part of the dermis layer of skin.

3. Third-degree (full thickness) burns.

4. Fourth-degree burns.

Blisters are a sign of Second-degree burns.

Inhaling of oxygen and releasing of carbon dioxide to make our living is the process called as respiration. We know that, air is a mixture several gases like 78% of nitrogen, 21% of oxygen and several other gases with watervapour.

Hence, Oxygen is essential for respiration process.

The odometer or the odograph is an instrument used to indicate the distance travelled by the vehicle.

An ideal gas cannot be liquified because forces between the molecules are negligible.

214 BC