## Law of mass action MCQ Basic level

Compared to other sections, Chemistry is considered to be the most scoring section. If prepared thoroughly, chemistry can help students to secure a meritorious position in the exam. These questions are very important in achieving your success in Exams after 12th.

Q1.The active mass of a reactant is

•  Its gram molecular weight
•  Its equivalent weight
•  Per litre number of moles
•   None of these

Per litre number of moles

Q2. In a reaction the rate of reaction is proportional to its active mass, this statement is known as

•  Law of mass action
•  Le- chatelier principle
•  Law of constant proportion

Law of mass action

Q3. The law of mass action was enunciated by

•  Guldberg and Waage
•  Bodenstein
•  Berthelot
•  Graham

Guldberg and Waage

Q4. Theory of ‘active mass’ indicates that the rate of chemical reaction is directly proportional to the

•  Equilibrium constant
•  Properties of reactants
•   Volume of apparatus
•   Concentration of reactant

Concentration of reactant

Q5. 240g of urea is present in 10 litre solution the active mass of urea will be

•  0.2 mol/litre
•  0.06 mol/litre
•  0.4 mol/litre
•   0.08 mol/litre

0.4 mol/litre

Q6.  According to law of mass action, the rate of a reaction is directly proportional to

•  Molarities of the reactants
•  Normalities of the reactants
•  Molalities of the reactants
•  Mole fractions of the reactants

Molarities of the reactants

Q7. The number of gram molecules of substance present in unit volume is termed as

•  Activity
•  Normal solution
•  Molar concentration
•  Active mass

Molar concentration

Q8.  The active mass of 64 gm of HI in a two litre flask would be

•  2
•  1
•  5
•  0.25

0.25

Q9. 120 gm of urea are present in 5 litre solution, the active mass of urea is

•  0.2
•  0.06
•  0.4
•  0.08

0.2

Q10. Active mass is given as, {If f = activity coefficient & CM= Molarity}

•  a = f CM
•  a = r CM
•  Amount of substance per unit Volume
•  Number of g mol per 100 litre

Amount of substance per unit Volume

## Want to know more

Please fill in the details below:

## Latest NEET Articles\$type=three\$c=3\$author=hide\$comment=hide\$rm=hide\$date=hide\$snippet=hide

Name

ltr
item
BEST NEET COACHING CENTER | BEST IIT JEE COACHING INSTITUTE | BEST NEET & IIT JEE COACHING