Colour of fluorescene produced by cathode rays depends upon________________?

Related Mcqs:

1. Which one is not true about cathode rays ?

   A. 9.11×10-31 Kg
   B. Cast shadow
   C. Heat up the platinum foil
   D. Cannot ionize

2. Which of the following properties prove that cathode rays are material in nature_________________?

   A. they cast shadow
   B. they possess momentum
   C. they are negatively charged
   D. all of the above

3. Size of molecule depends upon________________?

   A. Atomicity
   B. Shape of molecule
   C. Both A and B
   D. Difficult to predict

4. In Galvanic cell electrons flow from anode to cathode through__________________?

   A. external electric circuit
   B. salt bridge
   C. movement of ions
   D. all of the above

5. During Electrolysis of Water the product @cathode obtained is ___________?

   A. Hydrogen Gas & Water
   B. Oxygen Gas & Water
   C. CO & Water
   D. Hydrogen & Carbon monoxide

   Submitted by: Aamir khan Hullio

6. In electrolysis of NaCl the product obtained at cathode is_______.

   A. Sodium ions
   B. Chloride ions
   C. Both
   D. Remain at the bottom of the cell

   Submitted by: Aamir khan Hullio

7. During electrolysis of Water, the product obtained at cathode is ___________?

   A. Hydrogen Gas &Water
   B. Oxygen Gas &Water
   C. Only oxygen
   D. Only Water
   Aamir khan Hullio

8. In Dry cell, cathode is made up of_______?

   A. Zinc
   B. Carbon (Graphite)
   C. ZnCl²
   D. MnO²(Pyrolusite)

   Submitted by: Aamir khan Hullio

9. Cathode is a metalic plate where__________ takes place.

   A. Oxidation
   B. Reduction
   C. Redox
   D. Substitution

   Submitted by: Aamir khan Hullio

10. Positive rays give flash on________________?

    A. AgNO3 plate
    B. AgCl plate
    C. ZnO
    D. ZnS