1 Carat is equal to __________?
1 Carat is equal to __________?
A. 0.2 g
B. 0.3 g
C. 0.4 g
D. 0.5 g
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About 50% of the Earth’s crust, including the waters on the Earth and atmosphere, is?
About 50% of the Earth’s crust, including the waters on the Earth and atmosphere, is?A. Oxygen
B. Cabon Dioxide
C. Silicon
D. ClayThe light rays used for eliminating bacteria?
The light rays used for eliminating bacteria?A. X-rays
B. infrared rays
C. microwave radiation
D. ultra-violet radiationAll of the following substances are crystalline except_____________?
All of the following substances are crystalline except_____________?
A. Ice
B. Diamond
C. Sucrose
D. PlasticLactometer is used for__________?
Lactometer is used for__________?
A. Ship
B. Milk
C. Honey
D. NoneDioptre is a unit of measurement for __________ ?
Dioptre is a unit of measurement for __________ ?A. Current
B. Lens
C. Force
D. Focal LengthA dioptre is a unit of measurement of the optical power of a lens or curved mirror, which is equal to the reciprocal of the focal length measured in metres. (1 dioptre = 1 m−1.) It is thus a unit of reciprocal length.
Select the arrangement of electromagnetic radiation which starts with the lowest energy and increases to greatest energy?
Select the arrangement of electromagnetic radiation which starts with the lowest energy and increases to greatest energy?
A. radio, visible, infrared, ultraviolet, x-ray, gamma ray
B. radio, infrared, visible, x-ray, gamma ray, ultraviolet
C. visible, radio, infrared, ultraviolet, x-ray, gamma ray
D. radio, infrared, visible, ultraviolet, x-ray, gamma ray