- (A) Rises in the tube
- (B) Rotates at higher speed
- (C) Rotates at lower speed
- (D) Drops down in the tube
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- (A) H2
- (B) CCl4
- (C) C2H2
- (D) S
- (A) 0.2
- (B) 0.4
- (C) 0.6
- (D) 0.8
- (A) Sand
- (B) Magnesium silicate
- (C) Calcium silicate
- (D) Iron pyrite
- (A) Sulphur stick, which on detection gives white smoke
- (B) Using chemical reagents
- (C) Its smell
- (D) Soap solution
- (A) Emissivity of pipe surface
- (B) Diameter & length of the pipe
- (C) Temperature of hot pipe surface & that of air in the room
- (D) None of these
- (A) Grashoff number
- (B) Grashoff number & Reynolds number
- (C) Reynolds number
- (D) Grashoff number & Prandtl number
- (A) 2.5
- (B) 3.75
- (C) 4.75
- (D) 5.25
- (A) Ductile & resistant to corrosion/rusting
- (B) Weldable easily
- (C) Having uniform strength in all directions
- (D) Having maximum tensile strength along the lines of slag distribution
- (A) Rapidly first and then slowly
- (B) Linearly
- (C) Slowly first and then rapidly
- (D) Exponentially
