Group VIB of transition elements contains___________________?
Group VIB of transition elements contains___________________?
A. Zn Cd Hg
B. Fe Ru Os
C. Cr Mo W
D. Mn Te Re
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Treating phenol with formaldehyde in the presence of dilute base forms Bakelite. The process involved is_________________?
Treating phenol with formaldehyde in the presence of dilute base forms Bakelite. The process involved is_________________?A. oxidation
B. elimination
C. condensation polymerization
D. additional polymertizationCannizzaros reaction is not given by__________________?
Cannizzaros reaction is not given by__________________?A. formaldehyde
B. acetaldehyde
C. benzaldehyde
D. trimethyl acetaldehydeThe amount of Zinc (at. Wt=65) necessary to produce 224 ml of H2 by the reaction with an acid will be______?
The amount of Zinc (at. Wt=65) necessary to produce 224 ml of H2 by the reaction with an acid will be______?A. 0.065gm
B. 0.65gm
C. 6.5gm
D. 7.5gmWith impurities like P and S the open hearth furnace is lined with ?
With impurities like P and S the open hearth furnace is lined with ?A. SiO2
B. Fe2O3
C. FeO
D. CaO MgOWhich of the following unit of concentration is independent of temperature ?
Which of the following unit of concentration is independent of temperature ?A. Molarity
B. Molality
C. Mole fraction
D. allFormalin is ___________ solution of formaldehyde in water?
Formalin is ___________ solution of formaldehyde in water?A. 10%
B. 20%
C. 40%
D. 60%