Which of the following molecule is polar__________________?
A. CCI4
B. CO2
C. BF3
D. none of the above
Chemistry MCQs
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
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
The unit of molality is__________________?
A. moles dm-3
B. moles kg-1
C. gram dm-3
D. none
A solution can be both____________________?
A. dilute and concentrated
B. dilute and saturated
C. saturated and unsaturated
D. saturated and super saturated
Which of the following elements react with steam to produce H2 gas?
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________________?
A. First order reaction
B. Second order reaction
C. Zero order reaction
D. Third order reaction
Acid present in acid rain may be_________________?
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 ?
A. Aluminium
B. Sodium
C. Carbon
D. Sulphur
