Molten metal and arc zone are submerged in water.

The molten weld and arc zone are submerged under a blanket of granular fusible flux.

Molten metal and arc zone are submerged in a blanket of granular flux of helium.

Arc zone is submerged under fusible flux of graphite

A and B only

B and C only

A, B and D only

A, B, C and D

the angle between the cutting edge of the tool and the normal to the direction of velocity of work.

the angle between chip flow direction and the normal to thecutting edge of the tool.

the angle between cutting edge of the tool and normal to the cutting edge.

the angle between chip flow direction and direction of velocity of work.

18% tin, 4% nickel, 1% chromium

18% tungsten, 4% nickel, 2% chromium

18% tungsten, 4% chromium, 1% vanadium

18% nickel, 4% chromium, 1% manganese

A is correct

A and B are correct

A, B and C are correct

All are correct