Consider the following redox reaction. Zn+dil HNO3? Zn (NO3)2 + N2O + H2O The coefficient number of HNO3 in the equation is
A. 6
B. 8
C. 10
D. 4
Chemistry
A solution can be both
A. dilute and concentrated
B. dilute and saturated
C. saturated and unsaturated
D. saturated and super saturated
A solution can be both Read More »
The unit of molality is
A. moles dm-3
B. moles kg-1
C. gram dm-3
D. none
The unit of molality is Read More »
Solubility of CaF2 is 2.0×10-4 gdm-3 then Ksp of CaF2 is
A. 4.0 x 10-8
B. 3.2 x 10-11
C. 2.0 x 10-8
D. 4.0 x 10-12
Solubility of CaF2 is 2.0×10-4 gdm-3 then Ksp of CaF2 is Read More »
Which of the following points are important in connection with equilibrium constant ?
A. Kc is constant at given temperature
B. Kc is unaffected by change in concentration of reactants or products
C. Kc indicates the extent of reaction but not about the rate of reaction.
D. All of the above
Which of the following points are important in connection with equilibrium constant ? Read More »
Which of the following molecule is polar
A. CCI4
B. CO2
C. BF3
D. none of the above
Which of the following molecule is polar Read More »
Which catalyst is used in contact process ?
A. Fe2O3
B. V2O5
C. SO3
D. Ag2O
Which catalyst is used in contact process ? Read More »