Home
Class 12
CHEMISTRY
Given below are two statement :one is la...

Given below are two statement :one is labelled as Assertion A and the other is labelled as Reason R
Assertion A: In the Ellingham diagram , a sharp change in slope of the line is observed for `Mg rarr MgO` at `-1120^(@)C`
Reason R : There is a large change of entropy associated with the change of state
in the light of the above statements, choose the correct answer from the option given below

A

A is true but R is false

B

Both A and R are true but R is NOT the correct explanation of A

C

A is false but R is true

D

Both A and R are true but R is the correct explanation of A

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • JEE MAIN 2022

    JEE MAINS PREVIOUS YEAR|Exercise Question|561 Videos

  • JEE MAIN 2024

    JEE MAINS PREVIOUS YEAR|Exercise Questions|24 Videos

Similar Questions

Explore conceptually related problems

Given below are two Statements : One is labelled as Assertion A and the other is labelled as Reason R : Assertion A: During the boiling of water having temporary hardness, Mg(HCO_3)_2 " is converted to " MgCO_3 . Reason R: The solubility product of Mg(OH)_2 , is greater than that of MgCO_3 . In the light of the above statements, choose the most appropriate answer from the options

Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R: Assertion A: The H-O-H bond angle in water molecule is 104.5^(@) Reason R: The lone pair - lone pair repulsion of electrons is higher than the bond pair - bond pair repulsion. In the light of the above statements, choose the correct answer from the options given below:

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Aluminium is extracted from bauxite by the electrolysis of molten mixture of Al_(2)O_(3) 3 with cryolite. Reason (R) : The oxidation state of Al in cryolite is + 3. In the light of the above statements, choose the most appropriate answer from the options given below:

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R ) : Assertion (A) : Synthesis of ethyl phenyl ether may be achieved by Williamson synthesis. Reason (R ) : Reaction of bromobenzene with sodium ethoxide yields ethyl phenyl ether. In the light of the above statements, choose the most appropriate answer from the options given below :

Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R. Assertion A: The escape velocities of planet A and B are same. But A and B are of unequal mass. Reason R: The product of their mass and radius must be same, M_(1)R_(1)=M_(2)R_(2) In the light of the above statements, choose the most appropriate answer from the options given below :

Given below are two statements one is labelled as Assertion A and the other is labelled as Reason R Assertion A : In TlI_(3) , isomorphous to CsI_(3) the metal is present in +1 oxidation state. Reason R: Tl metal has fourteen f electrons in the electronic configuration. In the light of the above statements, choose the most appropriate answer from the options given below:

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Treatment of bromine water with propene yields l-bromopropan-2-ol. Reason (R) : Attack of water on bromonium ion follows Markovnikov rule and results in l-bromopropan-2-ol. In the light of the above statements, choose the most appropriate answer from the options given below :

Given below are two statements : one is labelled as Assertion A and the other is labelled as Assertion A: An electron microscope can achieve better resolving power than an optical microscope. Reason R : The de Broglie's wavelength of the electrons emitted from an electron gun is much less than wavelength of visible light. In the light of the above statements, choose the correct answer from the options given below:

Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : Hydrogen is the most abundatn element in the Universe, but it is not the most abundant gas in the troposphere . Reason R : Hydrogen is the lightest element . In the light of the above statements , choose the correct answer from the options given below :

Given below are two statement : one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : SO _(2) (g) is adsorbed to a large extent than H _(2) (g) on activated charcoal. Reason R : SO _(2) (g) has a higher critical temperature than H _(2) (g). In the light of the above statements, choose the most appropriate answer from the options given below.

JEE MAINS PREVIOUS YEAR-JEE MAIN 2023-Question
  1. A metal choride contains 0.57g. The molecular formula of the metal chl...

    Text Solution

    |

  2. Match List I with List II Choose the correct answer from the optio...

    Text Solution

    |

  3. Given below are two statement :one is labelled as Assertion A and the ...

    Text Solution

    |

  4. In the given reaction cycle X,Y and Z respectively are

    Text Solution

    |

  5. For lead storage battery pick the correct statements A. During charg...

    Text Solution

    |

  6. The bond order and magnetic property of acetylid ion are same as that ...

    Text Solution

    |

  7. Four gases A,B,C and D have critical temperaturres 5.3,33.2,126.0 and...

    Text Solution

    |

  8. Correct statement for the given reaction are : A. Compound B is a...

    Text Solution

    |

  9. The density of alkali metals is in the order

    Text Solution

    |

  10. Three organic compounds A,B and C were allowed to run in thin layer ch...

    Text Solution

    |

  11. The value of x in compound D is

    Text Solution

    |

  12. An analyst wants to convert 1L HCL of pH=1 to a solution of HCL of pH=...

    Text Solution

    |

  13. The mass of NH(3) produced when131.8 kg of cyclohexanecarbaldehyde und...

    Text Solution

    |

  14. Values of work function (W0) for a few metals are given below The ...

    Text Solution

    |

  15. One mole of an ideal gas at 350K is in a 2.0L vessel of thermally cond...

    Text Solution

    |

  16. 80 mole percent of mgCl(2) is dissociated in aqueous solution .The vap...

    Text Solution

    |

  17. The reaction 2NO+Br(2)rarr2NOBr takes place throught the mechanism g...

    Text Solution

    |

  18. In an oligopeptide named Alanylglenyl alanyl isoleucine , the number o...

    Text Solution

    |

  19. At 600k, the mean spuare (rms) speed of gas X (molar mass =40) is equa...

    Text Solution

    |

  20. Prolonged heating is avoided during the preparation of ferrous ammoniu...

    Text Solution

    |