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All magnets have exactly two poles-a north and a south. Some scientists theorize that a magnet with one pole called a monopole is possible, but the feat has yet to be achieved. In fact, if you were to take a bar magnet and cut it in half, the two pieces would separate and form new sets of poles

The Emu egg is made up a three distinct layers. The outer layer has a distinctive texture and is dark green to almost black in color. When the dark outer layer is carved away, a hard, waxy, teal colored layer is exposed.

Of the inner planets, Mercury and Venus have no natural satellites; Earth has one large natural satellite, known as the Moon; and Mars has two tiny natural satellites, Phobos and Deimos

Dichloro diphenyl trichloroethane (DDT) Non-water soluble chlorinated hydrocarbon in use since Second World War (1939-1945) as an insecticide for the control of lice (that spread typhus) and mosquitoes (that spread malaria and yellow fever).

Stapes : Stirrup-shaped bone in the middle ear of humans, smallest bone of human body.
Malleus :Hammer-shaped bone in the middle ear.
Incus : Anvil-shaped bone in the middle ear, receives and transmits vibrations from malleus to stapes.
Femur : Thigh bone – Longest bone in human body.

Other characteristics of the noble gases are that they all conduct electricity, fluoresce, are odorless and colorless, and are used in many conditions when a stable element is needed to maintain a safe and constant environment.

Blood group O (or blood group zero in some countries) individuals do not have either A or B antigens on the surface of their RBCs, and their blood serum contains IgM anti-A and anti-B antibodies.
Therefore, a group O individual can receive blood only from a group O individual, but can donate blood to individuals of any ABO blood group (i.e., A, B, O or AB).
If a patient needs an urgent blood transfusion, and if the time taken to process the recipient’s blood would cause a detrimental delay, O negative blood can be issued.
Because it is compatible with anyone, O negative blood is often overused and consequently is always in short supply

Atom, smallest unit into which matter can be divided without the release of electrically charged particles. It also is the smallest unit of matter that has the characteristic properties of a chemical element.

The Mantoux test (Tuberculin sensitivity test, Pirquet test, or PPD test for purified protein derivative) is a tool for screening for tuberculosis (TB) and for tuberculosis diagnosis.

Hay’s test – a chemical test used for detecting the presence of bile salts in urine (jaundice).

Rotheras test – test for the diagnosis of diabetes mellitus

Schick test – test for the diagnosis of diphtheria

liver

The study of liver – hepatology
largest gland in human body – Liver
Liver is made up of specilized cells called -Hepatocytes
liver is dark brown colour

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