Nimi mock test welder

Nimi mock test welder MCQ Objective Question Bank 

Nimi mock test welder for Multiple Choice Type Questions for Welder subject  ncvt online test

1. Which one is the temporary joint

A) Forged Welding
B) Cotter Joint
C) Brazing
D) Soldering

ANSWER= (D) Soldering

 

2. Which is the non-pressure welding

A) Spot Welding
B) Seam Welding
C) Arc Welding
D) Forge Welding

ANSWER= (C) Arc Welding

 

3. Oxy Acetylene Gas flame used in

A) Gas Welding
B) Gas Cutting
C) MIG Welding
D) (A) & (B) both

ANSWER= (B) Gas Cutting

 

4. The color code of Combustible Gas is

A) Red
B) Blue
C) Black
D) Green

ANSWER= (A) Red

 

5. The chemical formula of Acetylene is

A) C4H4
B) C2H2
C) CO2
D) C2O2

ANSWER= (B) C2H2

 

6. The Flame Temperature of Oxy – Acetylene Gas

A) 1750° - 2000°C
B) 2400° - 2700°C
C) 3000° - 3300°C
D) 3600° - 4000°C

ANSWER= (C) 3000° - 3300°C

 

7. Which one of the flames develops the lowest temperature

A) Oxy-Coal
B) Oxy-Hydrogen
C) Oxy-Acetylene
D) Oxy-Propane-Butane

ANSWER= (A) Oxy-Coal

 

8. The term D.A. means

A) Dissolve – Acetylene
B) Dissipate – Acetylene
C) Delivered – Acetylene
D) None of these.

ANSWER= (A) Dissolve – Acetylene

 

9. The ratio of oxygen to Acetylene in the neutral flame is

A) 2:1
B) 1:2
C) 1:1
D) 1:3

ANSWER= (C) 1:1

 

10. The best flame used to join a mild steel sheet is

A) Carburising flame
B) Oxidising flame
C) High-Pressure Flame
D) Neutral Flame

ANSWER= (D) Neutral Flame