Pick out the wrong statement?

Compressive strength of wood is usually more along the grains. The tenile strength of wood as compared to that of steel is about________?

500 c.c. each of hydrogen at 700 mm Hg pressure and oxygen at 600 mm Hg pressure are put together in a vessel of 1 litre capacity. The final pressure of the gas mixture will be ________ mm Hg?

What is the average life of a radioactive atom having a ‘half life period’ of T?

Which of the following does not require preheating during storage in the storage tank as well as during atomisation through burners?

________ paint has the minimum absorption co-efficient?