The metal which is used in thermite process because of its activity is____________________?

Related Mcqs:

1. Because of its ability to combine with both oxygen and nitrogen aluminium metal is used_____________?

   A. As nitrometer
   B. To remove air bubbles from molten metal
   C. To produce alloy
   D. As insulator

2. The metallurgical process in which a metal is obtained in a fused state is called__________?

   A. smelting
   B. roasting
   C. calcinations
   D. froth floatation

   Submitted by: Muhammad Ali Kunbhar

3. Phosphoric acid is a weak acid and its basicity is____________________?

   A. 1
   B. 3
   C. zero
   D. 2

4. A brivalent metal has the equivalent weighr of 12. The molecular weight to its oxide will be_______?

   A. 24
   B. 32
   C. 36
   D. 40

   Submitted by: Muhammad Ali Kunbhar

5. The weight of a metal of equivalent of 12 which will give 0.475g of its chloride is_______?

   A. 0.12g
   B. 0.16g
   C. 0.18g
   D. 0.24g

   Submitted by: Muhammad Ali Kunbhar

6. Boron is non metal while other elements of IIIA group are metals. This is because______________?

   A. it has small size
   B. it has high nuclear charge
   C. it forms molecular addition compounds
   D. all of the above

7. Boron is non-netal whereas A1 is metal. It is due to_______________________?

   A. Small size
   B. High nuclear charge
   C. Both A and B
   D. No authorized justification yet

8. The most paramagnetic element is____________________?

   A. Iron
   B. Cobalt
   C. Chromium
   D. Manganese

9. The main pollutant of leather tanneries in the waste water is____________________?

   A. chromium III
   B. chromium IV
   C. chromium V
   D. chromium VI

10. In K2Cr2O7 the oxidation number of chromium is____________________?

    A. 7
    B. 6
    C. -7
    D. -6