Solder is an alloy of______________?

Related Mcqs:

1. __________ is a hard solder?

   A. Tin-lead B. Tin-silver-lead C. Copper-zinc D. None of the above...

2. By increasing impurity content in the metal alloy the residual resistivity always_____________?

   A. decreases B. increases C. remains constant D. becomes temperature independent...

3. The conduction of electricity, in semiconductors, takes place due to movement of______________?

   A. positive ions only B. negative ions only C. positive and negative ions D. electrons and holes...

4. The co-ordination number of a simple cubic structure is______________?

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

5. Superconductors are becoming popular for use in________________?

   A. generating very strong magnetic field B. manufacture of bubble memories C. generating electrostatic field D. generating regions free from magnetic field...

6. _____________is viscoelastic?

   A. Cast-iron B. Graphite C. Rubber D. Glass...

7. Most of the common metals have _________ structure?

   A. linear B. hexagonal C. orthorhombic D. cubic...

8. Carbon rods are used in wet and dry cells because_____________?

   A. carbon rod serves as conductor B. carbon can resist the attack of battery acid C. both (A) and (B) D. either (A) or (B)...

9. Copper, even though costly, finds use in the windings of electrical machines because_____________?

   A. copper points offer low contact resistance B. copper can be easily soldered and welded E. copper windings are less bulky and the machines become compact D. all of the above...

10. For a particular material the Hall coefficient was found to be zero. The material is______________?

    A. insulator B. metal C. intrinsic semiconductor D. none of the above...