Onions, broccoli, fresh fruits, milk, eggs, and iodized salt are good sources of _________.

When a metal reacts with dilute hydrochloric acid, it produces:

What is the chemical symbol for Gold? 

A spring of spring constant 500 N/m is compressed by 5 cm. The potential energy stored is:

Which one of the following statement regarding the sun is correct? 

A body of mass 4 kg falls freely from a height of 5 m. What is its kinetic energy just before it hits the ground? (Take g = 10m/s²)

What happens when sodium reacts with water?

Which gas is responsible for the ozone layer's depletion?

Humans have _____ lobes in the left lung.

Which of these is not a function of proteins?