Home
Class 12
BIOLOGY
Statement (s) : According to Von't Hoff'...

Statement (s) : According to Von't Hoff's rule, metabolic activity doubles with energy `10^(@)C` increase in temperature
Reason (R ) : Reation rate is not affected with evergy `10^(@)C` decrease in temperature.

A

S is correct but R is wrong

B

S is wrong but R is correct

C

Both S and R are correct and R is correct explanation to S

D

Both S and R correct but R is not correct explanation to S.

Text Solution

AI Generated Solution

The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding the Statement:** - The statement claims that according to Van't Hoff's rule, metabolic activity doubles with every 10°C increase in temperature. This is a well-known principle in biochemistry that relates temperature to reaction rates. 2. **Analyzing Van't Hoff's Rule:** - Van't Hoff's rule states that for many biochemical reactions, the rate of reaction approximately doubles with every 10°C increase in temperature. This is due to the increased kinetic energy of molecules, which leads to more frequent and effective collisions between reactants. 3. **Evaluating the Reason:** - The reason provided states that the reaction rate is not affected by a 10°C decrease in temperature. This is incorrect. A decrease in temperature typically slows down the reaction rate, as molecules have less kinetic energy, leading to fewer collisions. 4. **Conclusion:** - The statement is correct as per Van't Hoff's rule, but the reason is incorrect. Therefore, the correct assessment is that the statement is true, while the reason is false. 5. **Final Answer:** - The statement is correct, but the reason is incorrect. Hence, the correct option is that the statement is true and the reason is false. ---
Promotional Banner

Topper's Solved these Questions

  • MOLECULES OF THE CELL

    DINESH PUBLICATION ENGLISH|Exercise CYG|43 Videos

  • MOLECULES OF THE CELL

    DINESH PUBLICATION ENGLISH|Exercise CYG|43 Videos

  • MICROBES IN HUMAN WELFARE

    DINESH PUBLICATION ENGLISH|Exercise Brain Teasers-VIII|60 Videos

  • MOLLUSCA

    DINESH PUBLICATION ENGLISH|Exercise CYG|10 Videos

Similar Questions

Explore conceptually related problems

The rate of reaction increases isgnificantly with increase in temperature. Generally, rate of reactions are doubled for every 10^(@)C rise in temperature. Temperature coefficient gives us an idea about the change in the rate of a reaction for every 10^(@)C change in temperature. "Temperature coefficient" (mu) = ("Rate constant of" (T + 10)^(@)C)/("Rate constant at" T^(@)C) Arrhenius gave an equation which describes aret constant k as a function of temperature k = Ae^(-E_(a)//RT) where k is the rate constant, A is the frequency factor or pre-exponential factor, E_(a) is the activation energy, T is the temperature in kelvin, R is the universal gas constant. Equation when expressed in logarithmic form becomes log k = log A - (E_(a))/(2.303 RT) Activation energies of two reaction are E_(a) and E_(a)' with E_(a) gt E'_(a) . If the temperature of the reacting systems is increased form T_(1) to T_(2) ( k' is rate constant at higher temperature).

The rate of reaction increases isgnificantly with increase in temperature. Generally, rate of reactions are doubled for every 10^(@)C rise in temperature. Temperature coefficient gives us an idea about the change in the rate of a reaction for every 10^(@)C change in temperature. "Temperature coefficient" (mu) = ("Rate constant of" (T + 10)^(@)C)/("Rate constant at" T^(@)C) Arrhenius gave an equation which describes aret constant k as a function of temperature k = Ae^(-E_(a)//RT) where k is the rate constant, A is the frequency factor or pre-exponential factor, E_(a) is the activation energy, T is the temperature in kelvin, R is the universal gas constant. Equation when expressed in logarithmic form becomes log k = log A - (E_(a))/(2.303 RT) For a reaction E_(a) = 0 and k = 3.2 xx 10^(8)s^(-1) at 325 K . The value of k at 335 K would be

The rate of reaction increases isgnificantly with increase in temperature. Generally, rate of reactions are doubled for every 10^(@)C rise in temperature. Temperature coefficient gives us an idea about the change in the rate of a reaction for every 10^(@)C change in temperature. "Temperature coefficient" (mu) = ("Rate constant of" (T + 10)^(@)C)/("Rate constant at" T^(@)C) Arrhenius gave an equation which describes aret constant k as a function of temperature k = Ae^(-E_(a)//RT) where k is the rate constant, A is the frequency factor or pre-exponential factor, E_(a) is the activation energy, T is the temperature in kelvin, R is the universal gas constant. Equation when expressed in logarithmic form becomes log k = log A - (E_(a))/(2.303 RT) For which of the following reactions k_(310)//k_(300) would be maximum?

The rate of reaction increases isgnificantly with increase in temperature. Generally, rate of reactions are doubled for every 10^(@)C rise in temperature. Temperature coefficient gives us an idea about the change in the rate of a reaction for every 10^(@)C change in temperature. "Temperature coefficient" (mu) = ("Rate constant of" (T + 10)^(@)C)/("Rate constant at" T^(@)C) Arrhenius gave an equation which describes aret constant k as a function of temperature k = Ae^(-E_(a)//RT) where k is the rate constant, A is the frequency factor or pre-exponential factor, E_(a) is the activation energy, T is the temperature in kelvin, R is the universal gas constant. Equation when expressed in logarithmic form becomes log k = log A - (E_(a))/(2.303 RT) For the given reactions, following data is given {:(PrarrQ,,,,k_(1) =10^(15)exp((-2000)/(T))),(CrarrD,,,,k_(2) = 10^(14)exp((-1000)/(T))):} Temperature at which k_(1) = k_(2) is

The rate of reaction is doubled for every 10^(@)C rise in temperature. The increase in rate as result of an increase in temperature from 10^(@)C to 100^(@)C is how many times of the original rate?

The rate of a chemical reaction doubles for every 10^(@)C rise of temperature. If the temperature is raised by 50^(@)C , the rate of the reaction increases by about

Calculate the activation energy of a reaction whose reaction rate at 310 K gets doubled for 10 K rise in temperature.

Each question contains STATEMENTS-1 (Assertion) and STATEMENT -2 (Reason). Examine the statements carefully and mark the correct answer according to the instructions given below: STATEMENT-1: For exothermic reaction equilibrium constant decrease with increase in temperature. STATEMETN-2: For exothermic reaction rate constant decrease with decrease in temperature.

If the temperature is increased by 10°C the rate of the reaction becomes:

Assertion (A): The rate of reaction increases generally by 2 to 3 times for every 10^(@)C rise in temperature. Reason (R ): An increase intemperature increases the colliison frequency.

DINESH PUBLICATION ENGLISH-MOLECULES OF THE CELL-RQ
  1. An alkaloid which arrests cell division is Obtained from

    Text Solution

    |

  2. What is the role of competitive inhibitor during enzyme action? (a) It...

    Text Solution

    |

  3. Glycosidic bonds exist in DNA molecule between (a) Sugar and phosphate...

    Text Solution

    |

  4. match the following and find correct option {:(,,I,,II),(,a,"Hydroge...

    Text Solution

    |

  5. The enzyme which catalyses the formation of glutamine from its substra...

    Text Solution

    |

  6. Statement (s) : According to Von't Hoff's rule, metabolic activity dou...

    Text Solution

    |

  7. Arrange the following compounds in descending order on the basis of nu...

    Text Solution

    |

  8. Identify the wrong statements (a) The substrate binds to active site...

    Text Solution

    |

  9. Which of the following is the earliest discovered amino acid ?

    Text Solution

    |

  10. Which one of the following is not an oligosaccharide

    Text Solution

    |

  11. Match and find the correct option {:(,"",I,"",II),(,a,"Transferases"...

    Text Solution

    |

  12. Identity P,Q,R and S in the diagram

    Text Solution

    |

  13. Which one of the following statement is wrong

    Text Solution

    |

  14. Phytochrome is a

    Text Solution

    |

  15. Among the following edible fishes which one is a marine fish having ri...

    Text Solution

    |

  16. Which of the following is the least likely to be involved in stabil...

    Text Solution

    |

  17. Which of the following describes the given graph correctly ?

    Text Solution

    |

  18. Read the assertion and reason carefully to mark the correct option ou...

    Text Solution

    |

  19. Assertion : Secondary metabolites are produced in small quantities and...

    Text Solution

    |

  20. Which of the following are not polymeric

    Text Solution

    |