Heat of sun reaches the earth by ___________?
Heat of sun reaches the earth by ___________?
A. Convection
B. radiation
C. Conduction
D. None of these
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The frequency of a turning fork determined by a:
The frequency of a turning fork determined by a:A. Magnetic tape
B. Modulator
C. Sonometer
D. Reed instrumentBasic metals can be converted into gold by ?
Basic metals can be converted into gold by ?A. Heating
B. Beating
C. Artificial nuclear radioactivity
D. Chemical reactionThe good sources of Vitamin-A are?
The good sources of Vitamin-A are?
A. green leafy vegetables
B. seeds
C. fresh vegetables and fruits
D. sea foodsBlack gold is an oil; Black diamond is_________?
Black gold is an oil; Black diamond is_________?A. Copper
B. Iron
C. Coal
D. WoodBlack gold is a liquid based term applied to oil or petroleum, which comes in black color when it comes out of the ground and is worth a great deal of money. Petroleum is black gold and coal is black diamond.
which of these plants open its mouth when insect sit on its lid?
which of these plants open its mouth when insect sit on its lid?
A. Sunflower
B. Pitcher plant
C. Brassica Plant
D. None of theseStudy of fruit is called ___________?
Study of fruit is called ___________?A. Pomology
B. Plriculture
C. Sericulture
D. Apiculture