Kindly answer the questions in the box mentioned below:

1. What is the main safety precaution to be followed to avoid the damage of soldering iron?

A Keep the iron in a stand when not in use

B Check the soldering iron bit for required heat

C Keep the iron in suspending position after use

D Keep the iron nearer to the parts to be soldered

2. The defective in soldering joint is called as.....

A hot solder

B cold soder

C safety solder

D endangered joint

3. ‘ALCAP’ solder is used for soldering....

A zinc plates

B brass terminals

C copper conductors

D aluminium conductors

4. The commercial name of flux used for joining aluminium conductor is.....

A ALCAP

B ker-al-lite

C eyre No.7

D organic flux

5. The temperature of the solder for soldering aluminium conductor must be maintained within.....

A 360°

B 420°

C 540°

D 600°

6. What effect will occur, during the operation of joining aluminium conductor?

A Inhaling copious toxic fumes

B Spreading of molten solder

C Increasing the surface area

D Formation of slug on the molten solder

7. In soldering process, good wetting results can be obtained from........

A very low heat

B In oil surfaces

C untinned surfaces

D sufficient flux of correct type is used

8. Which is to be added to recondition the solder?

A Tin

B Zinc

C Lead

D Rosin