Physical properties of materials

Increasing the amount of a substance does not change its—

When water is heated from 0°C to 10°C, it's volume :

What changes will the volume of water show if the temperature is lowered from 9°C to 3°C :

The density of water will reach its maximum value at the temperature of–

At which temperature density of water is maximum ?

The maximum density of water is at :

What is the law in which under the same conditions of temperature and pressure, equal volumes of all gases contain equal number of molecules?

In which of the following distance between molecules of carbon dioxide filled in container may increase ? 1. On increasing the temperature of the container 2. On increasing volume of container 3. On increasing air pressure in the container 4. On adding more carbon dioxide gas in container without changing its size

If a gas is compressed to half of its original volume at 27°C, to what temperature should it be heated to make it occupy its original volume?

Assertion (A) : An iron ball floats on mercury but gets immersed in water. Reason (R) : The specific gravity of iron is more than that of mercury.