Home
Class 12
CHEMISTRY
Which symbol replaces the unit of atomic...

Which symbol replaces the unit of atomic mass, amu ?

A

u

B

A

C

M

D

n

Text Solution

Verified by Experts

The correct Answer is:
A

Presently the new symbol used is 'u' (known as unified mass) in palce of amu. It is defined as mass exactly equal to 1/12th the mass of one C-12 atom.
Promotional Banner

Topper's Solved these Questions

  • MHTCET 2017

    MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS|Exercise CHEMISTRY|50 Videos
  • MHTCET 2019 PAPER 1

    MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS|Exercise CHEMSITRY|50 Videos

Similar Questions

Explore conceptually related problems

The unit of atomic mass is :

What is atomic mass unit (amu)?

Define the atomic mass unit.

Sodium crystallises in a cubic lattice and the edge length of the unit cell is 430 pm. Calculate the number of atoms in the unit cell. (Atomic mass Na = 23 amu, Density of Na = 0.9623 g cm^(-3) )

(a) Write Einstein's mass-energy equation. Give the meaning of each symbol which occurs in it. (b) If 25 atomic mass units (u) of a radioactive material are destroyed in a nuclear reaction, how much energy is released in MeV ?

MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-MHTCET 2018-Chemistry
  1. Which among the following oxoacids of phosphorus shows a tendency of d...

    Text Solution

    |

  2. What is the oxidation number of gold in the complex [AuCl(4)]^(1-) ?

    Text Solution

    |

  3. Which symbol replaces the unit of atomic mass, amu ?

    Text Solution

    |

  4. Which of the following compounds reacts immediately with Lucas reagent...

    Text Solution

    |

  5. What is the catalyst used for oxidation of SO(2) to SO(3) in lead cham...

    Text Solution

    |

  6. The number of moles of electrons passed when current of 2 A is passed ...

    Text Solution

    |

  7. The molarity of urea (molar mass 60 g mol^(-1)) solution by dissolving...

    Text Solution

    |

  8. Which carbon atom of dexyribose sugar in DNA does not contain -underse...

    Text Solution

    |

  9. Which of the following carboxylic acids is most reactive toward esteri...

    Text Solution

    |

  10. Molarity is

    Text Solution

    |

  11. Which of the following is a tricarboxylic acid ?

    Text Solution

    |

  12. What is the number of donar atoms in dimethylglyoxinato ligand ?

    Text Solution

    |

  13. In which substance does nitrogen exhibit the lowest oxidation state ?

    Text Solution

    |

  14. Which of the following is most reactive towards addition reaction of h...

    Text Solution

    |

  15. The most basic hydroxide from following is

    Text Solution

    |

  16. What is the SI units of density ?

    Text Solution

    |

  17. Which of the following compoinds does not undergo haloform reaction ?

    Text Solution

    |

  18. Two moles of n ideal gas are allowed to expand from a volume of 10dm^(...

    Text Solution

    |

  19. In which among the following solids, Schottky defeat is not observed ?

    Text Solution

    |

  20. What are the products of auto - photolysis of water ?

    Text Solution

    |