Question

Describe the relative reactivity of the following elements with hot water and cold water .

1. Mg
2.Ca
3 Na

ans

1. Mg - It reacts with steam but not react with cold and hot water . It forms a white precipitate of magnesium oxide
Mg + h2o- Mgo + H20

2. Ca - It reacts vigorously with hot water but not with cold . However , the hydrogen produced , does not catch fire. The hydrogen starts floating over surface of metal
Ca + H20 = Ca(OH)2 + h2

3. Na - It reacts violently with cold water and the hydrogen produced catches fire.
Na + H20 - Naoh + H2

If it is of 3 Mark's , how many I will get in boards . I not balance the reaction as it was not mentioned in the question .

Think With point of view of examiner ..

PLZ SOLVE MY DOUBT .​

Answer 1

Answer:

Question itna Bda h or point bs esse kesse kam chlega yarrr

point bdhao kuch to btaye ☺️☺️