Which of the following molecule is polar__________________? April 15, 2025 by admin A. CCI4 B. CO2 C. BF3 D. none of the above
Which of the following points are important in connection with equilibrium constant ? April 15, 2025 by admin 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
Solubility of CaF2 is 2.0×10-4 gdm-3 then Ksp of CaF2 is_______________? April 15, 2025 by admin A. 4.0 x 10-8 B. 3.2 x 10-11 C. 2.0 x 10-8 D. 4.0 x 10-12
The unit of molality is__________________? April 15, 2025 by admin A. moles dm-3 B. moles kg-1 C. gram dm-3 D. none
A solution can be both____________________? April 15, 2025 by admin A. dilute and concentrated B. dilute and saturated C. saturated and unsaturated D. saturated and super saturated
Consider the following redox reaction. Zn+dil HNO3? Zn (NO3)2 + N2O + H2O The coefficient number of HNO3 in the equation is__________________? April 15, 2025 by admin A. 6 B. 8 C. 10 D. 4
Which of the following elements react with steam to produce H2 gas? April 15, 2025 by admin A. Pd B. Ni C. Sn D. All of the above
The unit of the rate constant (k) is same as that of rate of reaction________________? April 15, 2025 by admin A. First order reaction B. Second order reaction C. Zero order reaction D. Third order reaction
Acid present in acid rain may be_________________? April 15, 2025 by admin A. H2SO4 B. HNO3 C. both A and B D. none of the above
Which of the following elements conduct electricity and also melts below 100°C ? April 15, 2025 by admin A. Aluminium B. Sodium C. Carbon D. Sulphur
