The amount of buoyancy obtained by a solid partially or fully immersed in a liquid depends on?
(A) on the amount of liquid displaced by the solid
(B) on the weight of the solid
(C) on the mass of the solid
(D) none of these
Archimedes' principle states that : "The upward buoyant force that is exerted on a body immersed in a fluid, whether fully or partially submerged, is equal to the volume of the fluid that the body displaces."
The reason why a needle floats on top of the water is?
(A) Surface tension
(B) Adhesion
(C) Cohesion
(D) Capillarity
It is due to the surface tension of the liquid.
What is the reason for the spherical shape of a liquid drop?
(A) Viscosity
(B) Light Load
(C) Surface Tension
(D) Atmospheric Pressure
The working principle of the washing machine is?
(A) Sub-Centre
(B) Diffusion
(C) Centrifugation
(D) Dialysis
An iron needle sinks in water but a ship floats, on what principle is this based?
(A) Pascal's principle
(B) Principle of Archimedes
(C) Law of Gravitation
(D) None of these
Hence, according to Archimedes' principle, the upthrust is more than the weight of the ship. That is why the iron ship floats in water.
What is the end product of glycolysis?
(A) Ethyl Alcohol
(B) Carbon Dioxide
(C) Pyruvic Acid
(D) Glucose
Lysosomes are known as suicide bags because of their _.
(A) Protolytic Enzyme
(B) parasitic Nucleus
(C) Hydrolytic Enzyme
(D) Phagocytic Cctivity
Due to the presence of which of the following, animal cells and plant cells differ?
(A) Ribosome
(B) Cell Wall
(C) Chloroplast
(D) Protoplasm
Bricks in a building are like _ in living beings.
(A) Cells
(B) Tissues
(C) Organs
(D) Glands
Which of the following is not present in adult stomata?
(A) Cytoplasm
(B) Chloroplast
(C) Cell Wall
(D) Vacuole
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