Which of the following ion formation is always exothermic ?

Related Mcqs:

1. Which of the following ion is stable in aqueous solution ?

   A. H+
   B. H-
   C. Cl-
   D. All are stable

2. A solution has pH = 0 its H+ ion concentration is__________________?

   A. 1 x 10-1
   B. 1 x 10-14
   C. 1 x 10-7
   D. 1

3. When sparingly soluble salt is in equilibrium with molar concentration of its oppositely charged ion when the product is called_________________?

   A. common ion effect
   B. solubility product
   C. dissociation constant
   D. dissociation constant for an acid

4. The compound or complex ion which has a ring in its structure__________________?

   A. polydentate ligand
   B. chelate
   C. monodentate ligand
   D. hydrate

5. Addition of 2nd electron to a uni negative ion is always____________________?

   A. Exothermic
   B. Endothermic
   C. Data is insufficient
   D. Unpredictable

6. Tetrahydroborate ion is the source of_______________?

   A. proton
   B. H+
   C. both A & amp; B
   D. H-

7. Which ion will have maximum value of heat of hydration ?

   A. A1+3
   B. Cs+
   C. Ba+
   D. Mg+2

8. Nitronium ion is___________________?

   A. NO3
   B. NO
   C. NO2-
   D. NO2+

9. Which element can form tripositive ion ?

   A. Beryllium
   B. Carbon
   C. Silicon
   D. Aluminium

10. A scale which used to measure the Hydrogen Ion concentration in a solution is known as__________?

    A. Thermometer
    B. Viscometer
    C. PH Scale
    D. Stagmometer

    Submitted by: Ali Jan