Correct Answer : Geotropism
Correct Answer : Potassium iodide
It consists of 40% sodium and 60% chloride, by weight. Salt is by far the biggest dietary source of sodium, and the words “salt” and “sodium” are often used interchangeably. Some varieties of salt may contain trace amounts of calcium, potassium, iron and zinc. Iodine is often added to table salt ( 2 , 3 ).
Correct Answer : Hydrogen Sulphide
Correct Answer : Herschel
Most encyclopedias and physics books credit the great British astronomer Sir William Herschel with the discovery of infrared radiation in 1800.
Correct Answer : Lead
Correct Answer : Soil
Aeroponics is the process of growing plants in an air or mist environment without the use of soil or an aggregate medium. ... Aeroponic culture differs from both conventional hydroponics, aquaponics, and in-vitro (plant tissue culture) growing.
Correct Answer : Nitrous oxide
Correct Answer : Michael Faraday
In 1831, Michael Faraday's experiments led to the discovery of electromagnetic induction, whereby electricity is induced by changes in a magnetic field.
Correct Answer : Phosphorus
Correct Answer : Graphite
