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

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Photochemical smog causes cracking of rubber.
Reason (R) : Presence of ozone, nitric oxide, acrolein, formaldehyde and peroxyacetyl nitrate in photochemical smog makes it oxidizing.
Choose the most appropriate answer from the options given below :

A

Both (A) and (R) are true but (R) is not the true explanation of (A)

B

(A) is false but (R) is true.

C

Both (A) and (R) are true and (R) is the true explanation of (A).

D

(A) is true but (R) is false.

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • JEE MAINS 2021

    JEE MAINS PREVIOUS YEAR|Exercise Chemistry (Section B )|10 Videos
  • JEE MAINS 2021

    JEE MAINS PREVIOUS YEAR|Exercise Chemistry (Section B)|40 Videos
  • JEE MAINS 2020

    JEE MAINS PREVIOUS YEAR|Exercise CHEMSITRY|25 Videos
  • JEE MAINS 2022

    JEE MAINS PREVIOUS YEAR|Exercise CHEMISTRY (SECTION-B)|10 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) : 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 : 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) : Heavy water is used for the study of reaction mechanism. Reason (R) : The rate of reaction for the cleavage of O - H bond is slower than that of O - D bond. 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) : Barium carbonate is insoluble in water and is highly stable. Reason (R) : The thermal stability of the carbonates increases with increasing cationic size. Choose the most appropriate answer from the options given below :

Given below are two statements : One is labelled as Assertion A and other is labelled as Reason R. Assertion A : The dihedral angles in H_2 O_2 in gaseous phase is 90.2^@ and in solid phase is 111.5^@ . Reason R : The change in dihedral angle in solid and gaseous phase is due to the difference in the intermolecular forces. Choose the most appropriate answer from the options given below for A and R.

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.

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R ). Assertion (A) : Lithium salts are hydrated Reason (R ): Lithium has higher polarising power than other alkali metal group members . 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) : Sucrose is a disaccharide and a non-reducing sugar. Reason (R) : Sucrose involves glycosidic linkage between C_1 of D-glucose and C_2 of a-fructose. 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) : 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: 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 :

JEE MAINS PREVIOUS YEAR-JEE MAINS 2021- Chemistry (Section A )
  1. The interaction energy of London forces between two particles is propo...

    Text Solution

    |

  2. The Major Product in the above reaction is:

    Text Solution

    |

  3. Match List - I with List - II. Choose the most appropriate match.

    Text Solution

    |

  4. Given below are two statements : Statement I : Sphalerite is a sulp...

    Text Solution

    |

  5. Indicate the complex/complex ion which did not show any geometrical is...

    Text Solution

    |

  6. Given below are two statements : one is labelled as Assertion (A) and ...

    Text Solution

    |

  7. Which one of the following phenols does not give colour when condensed...

    Text Solution

    |

  8. The number of stereoisomers possible for 1,2-dimethyl cyclopropane is ...

    Text Solution

    |

  9. Chalcogen group elements are .

    Text Solution

    |

  10. The class of drug to which chlordiazepoxide with above structure belon...

    Text Solution

    |

  11. The sol given below with negatively charged colloidal particles is :

    Text Solution

    |

  12. Arrange the following Cobalt complexes in the order of increasing Crys...

    Text Solution

    |

  13. The bond order and magnetic behaviour of O2^- ion are, respectively :

    Text Solution

    |

  14. The number of non-ionisable hydrogen atoms present in the final produc...

    Text Solution

    |

  15. Given below are two statements: one is labelled as Assertion (A) and t...

    Text Solution

    |

  16. Given below are two statements: one is labelled as Assertion (A) and t...

    Text Solution

    |

  17. Consider the given reaction, the Product A is :

    Text Solution

    |

  18. Given below are two statements: one is labelled as Assertion (A) and t...

    Text Solution

    |

  19. Consider the given reaction, Identify 'X' and 'Y' :

    Text Solution

    |

  20. Which one of the following compounds is not aromatic ?

    Text Solution

    |