What Statement Is Not Consistent with the Chemistry of Lead

question 187

Multiple Choice

What statement is not consistent with the chemistry of lead?

• A)It has the highest density of the group 4A elements.
• B)It is commonly used as a fuel additive in gasoline to boost the octane rating.
• C)It is obtained from its ore galena (PbS)by roasting in air and then by reduction with carbon monoxide.
• D)It is used in making pipes,cables,paint pigments and electrodes for storage batteries.

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Definitions:

Moving Averages

A method used in time series analysis to smooth out short-term fluctuations and highlight long-term trends by averaging data points over specific periods.

Exponential Smoothing

A method used in time series forecasting that applies decreasing weights to past observations.

3-year Moving Averages

A method to smooth out data over a three-year period to identify trends and patterns.

Seasonal Variation

Refers to periodic fluctuations in data or variables that occur at or depend on specific times of the year.