Which gas was discovered on the sun about 151 years ago during total solar eclipse?
Which gas was discovered on the sun about 151 years ago during total solar eclipse?
A. Hydrogen
B. Helium
C. Nitrogen
D. Flourine
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Which gas is used for artificial ripening of green fruit ?
Which gas is used for artificial ripening of green fruit ?A. Carbon dioxide
B. Acetylene
C. Ethane
D. EthyleneEthylene plays a vital role in the natural ripening of fruits. It is a hormone produced naturally within the fruits to stimulate ripening process. Ethylene, being a natural hormone, does not pose any health hazards to consumers, the guidance note points out.
What divides the Earth into the Northern and the Southern Hemispheres?
What divides the Earth into the Northern and the Southern Hemispheres?A. Axis of rotation
B. Equator
C. North Pole
D. South PoleWho invented Logarithm Tables?
Who invented Logarithm Tables?A. John Napier
B. John Doe
C. John Harrison
D. John DouglasMaterials for rain-proof coats and tents owe their water proof properties to________?
Materials for rain-proof coats and tents owe their water proof properties to________?
A. Surface tension
B. Viscosity
C. Specific gravity
D. ElasticityThe reaction between methane and chlorine in diffused sunlight is__________?
The reaction between methane and chlorine in diffused sunlight is__________?A. Oxidation
B. Reduction
C. Polymerisation
D. Radical substitutionHow many calories are there in 1 gram of carbohydrate?
How many calories are there in 1 gram of carbohydrate?A. 2
B. 2
C. 4
D. 10.25Carbohydrates provide 4 calories per gram, protein provides 4 calories per gram, and fat provides 9 calories per gram.