A. Olivine
B. Amphibole
C. Pyroxene
D. Biotite
Choose the correct answer from the options given below:
Understanding Mineral Crystallization Sequence
This question asks to identify the correct order in which minerals crystallize from magma as it cools, based on fractional crystallization. This process follows Bowen's Reaction Series.
Bowen's Reaction Series and Mineral Order
Bowen's Reaction Series describes the sequence of mineral formation as magma cools. Minerals that crystallize at higher temperatures tend to form first, followed by minerals that crystallize at lower temperatures.
The minerals given are:
- A: Olivine - Crystallizes at the highest temperatures (early stage).
- C: Pyroxene - Crystallizes after olivine but before amphibole.
- B: Amphibole - Crystallizes after pyroxene.
- D: Biotite - Crystallizes at lower temperatures (late stage).
Correct Mineralisation Sequence
Following Bowen's Reaction Series from high temperature to low temperature, the sequence is:
- Olivine (A)
- Pyroxene (C)
- Amphibole (B)
- Biotite (D)
Therefore, the correct sequence is A, C, B, D.
Important Questions from Forecasting
Name the human resource demand (need) forecasting technique, which solicits estimates of personnel needs from a group of experts, usually managers. The HRP experts act as intermediaries, summarise the various responses and report the findings back to the experts. The experts are surveyed again after they receive this feedback. Summaries and surveys are repeated until the experts' opinions begin to agree. The agreement reached is the forecast of the personnel needs.
Select the correct option :
The sensitivity of forecast in simple moving average forecasting method, for the increase of the length of average period,
For a product, the forecast and the actual sales for December 2008 were 25 and 20 respectively. If the exponential smoothing constant (α) is taken as 0.2, the forecast sales for January 2009 would be.
For a product the forecast and actual sales for December 2002 were 25 and 20 respectively. If the exponential smoothing constant is taken as 0.2, then forecast sale for January 2003 would be
- The difference between the actual demand for any time period and the forecast for the same period is termed as _______.
