When an active metal like Al comes in contact with less active element like Cu then it produces__________________?

Related Mcqs:

1. The basic hydrolysis of ethyl acetate produces__________________?

   A. ethanol B. acetic acid C. ethanol and acetic acid D. ethanol and sodium acetate...

2. Which of the following produces black spots when it comes in contact with organic substances such as skin and cellulose?

   A. CuSO4 B. AgNO3 C. K2MnO4 D. CH3COOH Submitted by: Muhammad Kamal...

3. The radio-active element used in heart pacemakers is ___________?

   A. Uranium B. Deuterium C. Plutonium D. Radium Submitted by: Name...

4. The element of group VIA which is a non-metal is________________?

   A. S B. Se C. Te D. Po...

5. Many properties of an element and its compounds can be predicted from the position of the element in the periodic table. What property could not be predicted in this way ?

   A. The nature of its oxides B. The charge on its ions C. The formula of its oxide D. Its number of isotopes...

6. Which catalyst is used in contact process ?

   A. Fe2O3 B. V2O5 C. SO3 D. Ag2O...

7. The oxidation number of central metal atom in [Ni(CO)4] is_________________?

   A. 0 B. 2 C. 4 D. 6...

8. The specie which donates electrons to central metal atom in coordination sphere is called____________________?

   A. anion B. cation C. Ligand is positively charged D. acid...

9. Which of the following is typical transition metal ?

   A. Sc B. Y C. Cd D. Co...

10. Coordination number of the transition element in [Pt Cl NO2 (NH3)4]2- is____________________?

    A. 2 B. 6 C. 4 D. 8...