Home
Class 12
CHEMISTRY
I. Tensile strength of vulcanised rubber...

I. Tensile strength of vulcanised rubber is almost ten times more than raw rubber .
II. Elasticity of raw rubber is very high.
Chose the correct options.

A

I is true II is false

B

I is false II is true

C

Both I and II

D

Neither I nor II

Text Solution

Verified by Experts

The correct Answer is:
A
Natural rubber is soft and sticky and after vulcanisation , its strength and elasticity increase due to cross links occur between different monomer units.
Promotional Banner

Topper's Solved these Questions

  • PRACTICE SET 01

    MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS|Exercise PAPER 1 (PHYSICS & CHEMISTRY)|50 Videos

  • PRACTICE SET 03

    MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS|Exercise PAPER 1 (PYSICS & CHEMISTRY)|50 Videos

Similar Questions

Explore conceptually related problems

Natural rubber or raw rubber consists of basic material latex which is a dispersion of isoprene .During the treatement this isoprene forms a high molecular wiehg polymer of isoprene. Natural rubber can be obtained from five hundred different species of plants. Consider the following properties of rubber , (i) Tensils strength of vulcanised rubber is almost ten times more than raw rubber . (ii) Elasticity of raw rubber is very high . Choose the correct option .

Which of the statement(s) is/are correct ? I. Raw rubber has high elasticity . II. Tensile strength of vulcanised rubber is almost ten times as compared to raw rubber . The correct option is

Steel is more elastic than rubber because it :

Statement I : Balloons made by nylon films are better for containing helium than the conventional rubber balloons. Statement II : R.M.S. velocity of helium is very high. So helium atom can effuse out through rubber balloons.

Assertion: Rubber is more elastic than glass Reason: The rubber has higher modulus of elasticity than glass

Which of the following statement is correct regardiing the drawbacks of raw rubber ?

Which of the following statement is correct regardiing the drawbacks of raw rubber ?

a. Glass is more elastic than rubber b. Rubber is miore elastic than glass c. Steel is more elastic than rubber d. Rubber is more elastic than steel For the above statements

MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-PRACTICE SET 02-Paper 1 (Chemistry )
  1. Sulphur on boiling with NaOH solution gives

    Text Solution

    |

  2. The volume of oxygen evolved at STP by decomposition of 0.68g '20 volu...

    Text Solution

    |

  3. Coordination compounds are the compounds in which the central metal at...

    Text Solution

    |

  4. To correct the order of stability of group II A metal carbonates is

    Text Solution

    |

  5. Which of the following test is not carried out of example the presence...

    Text Solution

    |

  6. The number of primary, secondary and tertiary carbons in 3,4-dimethylh...

    Text Solution

    |

  7. The reaction of chloroform with alcoholic KOH and p- toluidine forms

    Text Solution

    |

  8. The enzyme which can catalyse the conversion of glucose to ethanol is

    Text Solution

    |

  9. Which among the following free radicals is most stable

    Text Solution

    |

  10. The drug used aganist AIDS is

    Text Solution

    |

  11. Which one of the following halogens forms only one oxo acid ?

    Text Solution

    |

  12. p H of a solution of HCI is 4,its molar concentration is

    Text Solution

    |

  13. The complex ion [Cu(NH3)4]^(2+) is

    Text Solution

    |

  14. When phenol is heated with CHCl(3) and alcoholic KOH, salicylaldehyde ...

    Text Solution

    |

  15. Cod liver oil is

    Text Solution

    |

  16. Aniline when diazotiesd in cold and then treated with dimethy1 aniline...

    Text Solution

    |

  17. Glucose gives silver mirror test with ammoniacal silver nitrate becaus...

    Text Solution

    |

  18. I. Tensile strength of vulcanised rubber is almost ten times more than...

    Text Solution

    |

  19. Amoxillin is semi-syntheitc modification of :

    Text Solution

    |

  20. A correct statements is

    Text Solution

    |