Which one of the following is a buffer solution ?
Which one of the following is a buffer solution ?
A. brine
B. blood
C. glue
D. solution of CuSO4
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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 MgOThe anhydride of HCIO4 is_________________?
The anhydride of HCIO4 is_________________?A. Cl2O
B. Cl2O6
C. ClO2
D. Cl2O7If electricity is passed through CuSO4 solution by using Pt electrode then which of the following possible change occurs ?
If electricity is passed through CuSO4 solution by using Pt electrode then which of the following possible change occurs ?A. H2 is deposited at cathode
B. Colour of the solution becomes fade
C. Cu is deposited at anode
D. All are possibleThe technique used to separate components of mixture in solid phase ?
The technique used to separate components of mixture in solid phase ?A. Crystallization
B. Filtration
C. Sublimation
D. Solvent extractionBenzene is heated in air with V2O5 at 450°C it undergoes________________?
Benzene is heated in air with V2O5 at 450°C it undergoes________________?A. Substitution reaction
B. Addition reaction
C. Elimination reaction
D. Oxidation reactionThe species which donate two electron pairs in a coordination compound is called__________________?
The species which donate two electron pairs in a coordination compound is called__________________?A. ligand
B. mono-dentate ligand
C. poly-dentate ligand
D. bi-dentate ligand