A. whole amount of reactant does not change into product
B. chemical equilibrium is established
C. a catalyst changes the direction of reaction
D. rate of forward reaction decreases as reaction proceeds
Related Mcqs:
- Ideal gasses have all the following characteristics except ?
A. Absence of intermolecular forces
B. Collisions among the molecules of an ideal gas are perfectly elastic
C. The molecules occupy no space
D. All of the above are correct - When benzene is substituted by halogens only which one of the following halogens only which one of the following halogens is given the number one position in the ring while writing the name of compound ?
A. Bromine
B. Chlorine
C. Fluorine
D. Iodine - Which one of the following has the maximum number of isotopes ?
A. oxygen
B. carbon
C. tin
D. chlorine - Which of the following terms is used for the mass of chlorine 35.5 ?
A. relative atomic mass
B. mass number
C. atomic weight
D. relative isotopic mass - Which one of the following is not the mono isotopic element ?
A. arsenic
B. uranium
C. iodine
D. nickel - Which of the following methods is used to estimate hydrogen in an organic compound ?
A. Combustion method
B. Dumas method
C. Kjeldahls method
D. All of the above methods are for different purposes - Which of the following properties prove that cathode rays are material in nature_________________?
A. they cast shadow
B. they possess momentum
C. they are negatively charged
D. all of the above - The hardest of the following solids is__________________?
A. sodium
B. diamond
C. graphite
D. magnesium - Which of the following statement is correct ?
A. size of Cl atoms > Cl- ion
B. size of Na+ ion < Na atom
C. size of Na atom < Na+ ion
D. Cl- < Na+ - Which of the following elements conduct electricity and also melts below 100°C ?
A. Aluminium
B. Sodium
C. Carbon
D. Sulphur
