Home
Class 12
CHEMISTRY
If the result of following calculation i...

If the result of following calculation is written in the form of scientific notation as `A xx 10^(Y)`.
`(63.2 xx 545 = A xx 10^Y`
The vakue of Y is

A

1

B

2

C

3

D

4

Text Solution

Verified by Experts

The correct Answer is:
D
`63.2 xx 545 = 34444 = 3.4444 xx 10^4`
`Y=4`
Promotional Banner

Topper's Solved these Questions

  • NTA TPC JEE MAIN TEST 66

    NTA MOCK TESTS|Exercise CHEMISTRY|30 Videos

  • NTA TPC JEE MAIN TEST 68

    NTA MOCK TESTS|Exercise CHEMISTRY|30 Videos

Similar Questions

Explore conceptually related problems

Express the following mathematical operations in scientific notation (1) (7.7 xx 10^(9))/(6.6 xx 10^(5)) (2) (7.7 xx 10^(-7))/(6.6 xx 10^(5))

Express the following mathematical operations in scientific notation (1) (7.7 xx 10^(4))+ (0.77 xx 10^(5)) (2) (8.7 xx 10^(4))/(0.77 xx 10^(5))

Average life time of a hydrogen atom excited to n=2 state is 10^(-8) s. Find the number of revolutions made by the electron on an average before it jumps to the ground state. If your answer in scientific notation is x xx 10^(y), then find the value of y.

Express the following mathematical operations in scientific notation. 1) (6.6xx10^(5))xx(7.7xx10^(8)) 2) (6.6xx10^(5))xx(7.7xx10^(-7))

A beam of light has three lambda, 4144 "Å", 4972 "Å" "and"6216 "Å" with a total intensity of 3.6 xx10^(-3) Wm^(-2) equally distributed amongst the three lambda. The beam falls normally on an area 1.0 cm^(2) of a cleam metallic surface of work function 2.3 eV. Assume that there is no loss of light by reflection etc. Calculate the no. of photoelectrons emitted in 2 sec, in scientific notation, x xx 10^(y) find the value of y.

Silver (atomic weight 108 g mol^(-1)) has a density of 10.5 g cm^(-3) . The number of silver atoms on a surfaces of area 10^(-12) m^(2) can be expressed in scientific notation as Y xx 10^(-x) , The value of x is …….

Express the following mathematical operations in scientific notation. (1) (7.7xx10^(4))+(0.77xx10^(5)) (2) (8.7xx10^(4))-(0.77xx10^(5))

Express the following mathematical operations in scientific notation. (1) (7.7xx10^(9))/(6.6xx10^(5)) (2) (7.7xx10^(-7))/(6.6xx10^(-5))

NTA MOCK TESTS-NTA TPC JEE MAIN TEST 67-CHEMISTRY

  1. Text Solution

    |

  2. Best method to prepare ethyl benzene is :

    Text Solution

    |

  3. The following pair of compounds which can be classified as positional ...

    Text Solution

    |

  4. is :-

    Text Solution

    |

  5. The correct match of List - 1 with List - II will be:

    Text Solution

    |

  6. The cell reaction involving quinhydrone electrode is :- What will...

    Text Solution

    |

  7. What will be the degree of hydrolysis of 0.1 M solution of Nax? When a...

    Text Solution

    |

  8. How many mL of 0.1M aqueous solution of NaOH contains 4g NaOH :-

    Text Solution

    |

  9. If the result of following calculation is written in the form of scien...

    Text Solution

    |

  10. The energy of a photon is given as 3.03 xx 10^(-19) J// "atom". The wa...

    Text Solution

    |

  11. Silver is extracted from its ore by cyanide process. In this process, ...

    Text Solution

    |

  12. The number of correct trends in halogen gas, among the following will ...

    Text Solution

    |

  13. For the quadratic eqation 6x^2+11x+3=0, if alpha and beta are the root...

    Text Solution

    |

  14. How many monosaccharides are examples of Aldose ? Fructose, Ribulose...

    Text Solution

    |

  15. How many of the following groups if substituted at o- and/or p- positi...

    Text Solution

    |

  16. What is the average oxidation number of iron in Fe3O8? (upto 2 places ...

    Text Solution

    |

  17. 25 g of an element contains 25 xx 10^(24) atoms. If it crystallises in...

    Text Solution

    |

  18. The pressure is found to be 1 atm when 2 g of a gaseous substance A ar...

    Text Solution

    |

  19. Find the value of (x+y+z) of a hypothetical first order reaction, A+B+...

    Text Solution

    |

  20. If 20 gm N2 at 300 K is compressed reversibly and adiabatically from 2...

    Text Solution

    |