811. Name the gas which is used in the electric bulbs?
A: Oxygen
B: Hydrogen
C: Helium
D: Nitrogen
812. What is the largest flower in the world?
A: Fern
B: Conifer
C: Rafflesia
D: Horsetail
813. What is the breathing rate of the human body?
A: 16-20 minutes
B: 15-11 minutes
C: 25-26 minutes
D: 32-35 minutes
814. Hydrogen bomb is based on the principle of _ ?
A: Artificial radioactivity
B: Nuclear fusion
C: Natural radioactivity
D: Nuclear fission
815. The sounds of which frequency are human beings most sensitive?
A: 20 hertz
B: 400 hertz
C: 20000 hertz
D: 5000 hertz
816. According to the quantum theory of light, photons are __?
A: Particles
B: Waves
C: Energy packets
D: Electromagnetic
817. Dengue Fever is also called______?
A: Breakbone Fever
B: Black Fever
C: Plasmodium Fever
D: Remittent Fever
818. __ are positively (+) charged particles?
A: Electrons
B: Neutrons
C: Protons
D: None of These
819. Density of Water is____?
A: 997 kg/m³
B: 897 kg/m³
C: 1000 kg/m³
D: 1025 kg/m³
820. Pedosphere is the sum of________?
A: Soil and water
B: Organisms
C: Air
D: All of above
Admin