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Pedon is the smallest volume of soil that can be recognized as a soil individual. In soil color indication, the notation "2.5Y x 4/2, D" represents the Munsell color system notation. "2.5Y" denotes the hue, which indicates the dominant color of the soil. "4/2" represents the value which indicate the lightness/darkness and intensity of the color.
The gas used for filling weather balloons is-
The gas usually causing explosions in coal mines is-
The fuel that is used in modern submarines is -
The most reactive among the halogens is-
The nucleus of an atom consists of-
Petroleum is a mixture of-
The noble gas used in radiotherapy is
The chemical name of'Common salt’
The pH of a neutral solution is —
Bronze is an alloy of-