Question

Choose the correct statements about reactivity of metals *

1 point

Calcium floats in water due to formation of hydrogen gas

Iron reacts with prolonged heating as well as steam

When metal reacts with Acid like Nitiric acid, hydrogen gas bubbles not formed

All the statements are correct​

Answer 1

Metals low in the metal reactivity series do not react with water even at high temperature. Calcium (Ca) reacts slowly with cold water. Magnesium (Mg) reacts very slowly with hot water. It reacts with steam when being heated and gives hydrogen..

hence option 2 is correct