With 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 MgO
Similar Posts
Critical temperature for different gases is different and depends upon______________?
Critical temperature for different gases is different and depends upon______________?A. Size of molecule
B. Shape of molecule
C. Intermolecular attractions
D. All of the aboveAtoms of all the elements always contain in nucleus:
Atoms of all the elements always contain in nucleus:A. Proton and neutron
B. Neutron and electron
C. Proton
D. NeutronElements with similar chemical properties appear in the_________________?
Elements with similar chemical properties appear in the_________________?A. Same family
B. Same period
C. p block elements
D. Right upper cornerWhen aquious bromine is added to aqueous phenol a creamy white ppt is obtained. What does this reaction show ?
When aquious bromine is added to aqueous phenol a creamy white ppt is obtained. What does this reaction show ?A. phenol is unsaturated
B. 2-bromophenol is insoluble in water
C. a hydroxy group makes the benzene ring more susceptible to electrophilic attack
D. acid-base reactionThe halogen which reacts very slowly with halogen is________________?
The halogen which reacts very slowly with halogen is________________?A. Fluorine
B. Chlorine
C. Bromine
D. IodineNoble gases are so called zero group because they have:_________?
Noble gases are so called zero group because they have:_________?A. Zero Valency
B. Zero Electronegativity
C. Zero Electron Affinity
D. Both A and B
E. All of these