Substance whose atoms can be split are known as __________ materials.
A. Fusionable B. Fissionable C. Combustible D. None of these
“Green House Effect” means:____________?
A. Pollution B. Prevention of ultraviolet rays C. Trapping of Solar energy due to atmospheric carbon dioxide D. None
Tropism mostly refers to as_______?
A. Bird migration B. Directional growth of a plant C. Longevity of animal species D. Behavioral pattern of human
A seed can germinate in the absence of__________?
A. Oxygen B. Light C. Moisture D. Temperature
Diamond is harder than Graphite because of___________?
A. Difference in crystalline Structure B. Tetrahedral structure of diamond C. Difference in layer of atoms D. None of these
Which of these is a micronutrient of plants?
A. Oxygen B. Nitrogen C. Boron D. Carbon
Which planet is called “red planet”?
A. Mars B. Venus C. Jupiter D. Saturn
An example of rhizome is_________?
A. Carrot B. Tomato C. Ginger D. Garlic
Which metal is pure conductor of electricity?
A. Copper B. Gold C. Silver D. lead