The melting points and boiling points upto meddle of 3d- series
A. increases
B. decreases
C. remain same
D. no regular trend
The melting points and boiling points upto meddle of 3d- series Read More »
Chemistry
Group VIB of transition elements contains
A. Zn Cd Hg
B. Fe Ru Os
C. Cr Mo W
D. Mn Te Re
Group VIB of transition elements contains Read More »
The reduction potential Zn is
A. 0.76
B. -0.76
C. -0.55
D. 0.55
The reduction potential Zn is Read More »
Apparent charge on atom in molecule is
A. valency
B. coordination number
C. oxidation number
D. charge number
Apparent charge on atom in molecule is Read More »
In alkaline battery the anode is made up of
A. MnO2
B. Zn
C. AgO2
D. cadmium
In alkaline battery the anode is made up of Read More »
Density of H2SO4 in lead accumulator is
A. 1.25g/cm3
B. 1.3g/cm3
C. 1.20g/cm3
D. 1.15g/cm3
Density of H2SO4 in lead accumulator is Read More »
Secondary cell is
A. rechargeable
B. non rechargeable
C. electrolytic cell
D. Daniel cell
Secondary cell is Read More »
The element that act as anode always have ______________ position in electrochemical cell?
A. higher
B. lower
C. in middle
D. no effect of position