Reactivity with Air and Water (Group 2)

Q.

Which of the following is most soluble in water?

1. $\mathrm{AgI}$

2. $\mathrm{AgF}$

3. $\mathrm{AgCl}$

4. $\mathrm{AgBr}$

Q.

During a flame test, the alkaline earth metal that gives orange-red colour is:

1. Be

2. Mg

3. Ca

4. Ba

Q. Which of the followings readily react with cold water?