A. Orange yellow in alkaline medium
B. Orange yellow in acidic medium
C. Colourless in acidic medium
D. Colourless in basic medium
Related Mcqs:
- Which of the following is not the commercial name of poly-methyl-methacrylate (PMMA) ?
A. Styrofoam
B. Lucite
C. Perspex
D. Plexiglass - Colour comparator is used to measure the___________________?
A. pH value
B. Electrode potential
C. Colour intensity
D. None of these - Good design of the casing of a centrifugal pump aims at minimising the __________________________?
A. Cavitation
B. Frictional losses
C. Kinetic energy loss
D. Static head - Alumina, silica, lime and iron oxide are the basic raw material for the manufacture of Portland cement. The component of Portland cement which first hardens is_____________________?
A. 5CaO. 3 Al2O3
B. 3CaO. Al2O3
C. 3CaO. SiO2
D. 2CaO. SiO2 - The noble metals________________?
A. Are exemplified by Na, K and Li
B. Do not resist corrosion very strongly
C. Are the lowermost in the electro-chemical series of metals
D. None of these - Specific gravity of a metal, which weighs 5 kg in air and 4 kg when submerged in water, will be_____________________?
A. 5
B. 1.25
C. 2.5
D. 3.75 - Eutectoid composition of carbon steel at room temperature is___________________?
A. Cementite
B. Pearlite
C. Martensite
D. Ferrite - Cast iron contains ____________________ percent carbon?
A. 2.5
B. 3.75
C. 4.75
D. 5.25 - Annealing of white cast iron produces _____________________ iron?
A. Grey
B. Nodular
C. Malleable
D. Spheroidal - The maximum thickness of the metal which can be welded using ultrasonic welding is _____________ mm ?
A. 0.5
B. 3
C. 10
D. 25
