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By Chemistry Mcqs No Comments

Mass spectroscopy mainly tells about ____________?

A. Mass
B. e/m ratio
C. Isotopes
D. None of These

Submitted by: Safeullah Bullo

Mass spectroscopy primarily provides information about the ratio of the charge (e) of an ion to its mass (m), known as the e/m ratio. This technique is commonly used to identify compounds, determine their molecular structure, and measure the isotopic composition of elements. While mass is indirectly related to mass spectroscopy, it is not the main focus of the technique. Isotopes can indeed be identified and quantified using mass spectroscopy, but again, the primary information derived from the technique is the e/m ratio.

Related Mcqs:

  1. Quantum number which tells the energy of electron is________________?

    A. n
    B. 1
    C. m
    D. s

  2. Mass spectrometer is used to determine Mass number of isotopes and___________________?

    A. Atomic number
    B. Relative abundance
    C. Electronic configuration
    D. All of the above

  3. A sample of an iron and oxygen ore has a mass of 35.8 grams. The iron in the compound has a mass of 27.9 grams. What is the percent iron in the ore?

    A. 74% Fe
    B. 75% Fe
    C. 77% Fe
    D. 78% Fe

    Submitted by: Muhammad Ali Kunbhar

  4. Boiling points of hydrocarbons increase with the increase in number of carbon atoms. It is mainly due to_________________?

    A. More strength of H-bonding
    B. More strength of London forces
    C. Less polarizability
    D. All of the above

  5. On increasing the temperature the rate of reaction increases mainly because_________________?

    A. The activation energy of the reaction increases
    B. Concentration of the reacting molecules increases
    C. Collision frequency increases
    D. None of these

  6. Best position of hydrogen in the periodic table is above I.A Group which is mainly due to_______________?

    A. Both are electropositive
    B. Similar outer most shell electronic configuration
    C. Both form ionic compounds
    D. All

  7. Commercial detergents contain mainly _____________?

    A. RCOON
    B. RONa
    C. RSNa
    D. ROsO3Na
    Muhammad Ali Kunbhar

  8. By which method the molecular mass of benzene was determined as 78.108 ?

    A. Specific gravity method
    B. Vapour density method
    C. X-ray diffraction method
    D. Distillation methos

  9. The mass of P4O10 that will be obtained from the reaction of 1.33 gram of P4 and 5.07 of oxygen is___________?

    A. 2.05 gram
    B. 3.05 gram
    C. 4.05 gram
    D. 5.05 gram

    Submitted by: Muhammad Ali Kunbhar

  10. The maximum mass is present in 1dm3 for the following gas at STP.

    A. C3H8
    B. CO2
    C. CO
    D. CS2

    Submitted by: Aamir khan Hullio

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