Tag: group 2

Quizzes (2) Questions (47)

Questions Related to group 2

Multiple choice limestone uses of group 2 compounds group 2 industrial inorganic chemistry chemistry

Following compounds are used in fire-works :

  1. $LiNO _{3}$
  2. $BaCl _{2}$
  3. $(NH _{4}) _{2}Cr _{2}O _{7}$

  4. all of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

All compounds are used in fire works.
$LiNO _{3}$ on ignition imparts crimson red,
                        $BaCl _{2} \rightarrow $ green
           $(NH _{4}) _{2}Cr _{2}O _{7}\rightarrow$ green.

Multiple choice limestone uses of group 2 compounds group 2 industrial inorganic chemistry chemistry

The hydration energy of ${Mg}^{+2}$ is larger than that of ?

  1. ${Al}^{+3}$
  2. ${Na}^{+1}$
  3. ${Be}^{+2}$
  4. ${Mg}^{+3}$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Hydration energy depends on charge of ion and ionic radius. Higher the charge, greater the hydration energy. On the other hand, smaller the size, greater the hydration energy. Charge is considered first for comparison. Hence, $Mg^{2+}$ has higher hydration energy than $Na^+$.

Multiple choice limestone uses of group 2 compounds group 2 industrial inorganic chemistry chemistry

State True or False.
Caphosol a supersaturated calcium phosphate solution is used in the prevention and treatment of oral mucositis caused by chemotherapy or radiotherapy.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A supersaturated calcium phosphate solution such as Caphosol may be used in the prevention and treatment of oral mucosits caused by chemotherapy or radiotherapy.