Exams

Visible Horizon is the circle of contract, with the earth, of the cone of visual rays passing through the point of observation.

World Pulses Day is a new opportunity to heighten public awareness of the nutritional benefits of eating pulses. In 2019, 10th February is celebrated as first ever World Pulses Day.

Bronze is the mixture of is a mixture of copper and tin. The composition is copper is 88% and tin is 12%.

Lord Kelvin, working in Scotland, developed the Kelvin scale in 1848. His scale uses molecular energy to define the extremes of hot and cold. Absolute zero, or 0 K, corresponds to the point at which molecular energy is at a minimum. The Kelvin scale is preferred in scientific work, although the Celsius scale is also commonly used. Temperatures measured on the Kelvin scale are reported simply as K, not °K.

T (in °C) + 273.15 = T (in K)

T (in K) − 273.15 = T (in °C)