True or False Questions

True, Stress is a factor that contributes to heart disease risk.

More factors that contributes to heart disease risk are blood pressure, cholesterol, smoking, physical inactivity and overeating.

Graphite is a good conductor of electricity as it contains free electrons to move through the structure of the graphite.

We know that, 

Earth is known as Watery planet.

Neptune is known as Blue planet. 

Elasticity is measured as ratio of stress to strain. For a given amount of stress, the strain produced in the steel is comparatively smaller than the strain produced in the rubber.

Therefore, with the help of Young's modulus, it can be concluded that steel has greater elasticity than rubber.