GK (Science)

The chemical formula for methane is CH4, which indicates that one molecule contains one carbon atom and four hydrogen atoms.

The atomic number of an element is defined by the number of protons in the nucleus of its atoms. This number uniquely identifies the element.

Fluorine is a highly reactive halogen, which is a type of non-metal located in Group 17 of the periodic table.

Uranium is a heavy metal that exists in a solid state at standard temperature and pressure (0 degrees Celsius and 1 atm).

Cobalt is a chemical element with the symbol Co and atomic number 27. It is located in the d-block of the periodic table, classifying it as a transition metal.

THEL stands for Tactical High Energy Laser, which is a weapon system developed by the US and Israel.

Recoilless guns are designed with an open barrel at the rear, allowing propellant gases to escape backward, which creates a forward force that counteracts the recoil force.

Molarity is defined as the number of moles of solute per litre of solution.

Plasma is the most abundant state of matter in the visible universe, making up stars and interstellar gas.

To make an airplane dive, the pilot moves the control column forward, which moves the elevators on the tail down. This creates an upward force on the tail, pushing the nose of the plane down.

Vertebrates are classified into two main groups based on the presence of jaws: Agnatha (jawless fish) and Gnathostomata (jawed vertebrates). Other options do not represent primary taxonomic divisions of fish.

The phase transition from liquid to gas is called evaporation or vaporization. Boiling is a specific type of rapid evaporation occurring at the boiling point, but the general term is vaporization.

In a medical context, CBC stands for Complete Blood Count. It is a common blood test used to evaluate overall health and detect various disorders.

NPO is a medical abbreviation derived from the Latin 'nil per os', which translates to 'nothing by mouth'. This is a standard instruction before certain medical tests or surgeries.

Eukaryotic cells are defined by the presence of a membrane-bound nucleus that contains the genetic material. Prokaryotic cells lack a distinct nucleus.

The reciprocal of a number x is 1/x. For 0, the expression 1/0 is undefined in mathematics, meaning 0 has no reciprocal.

The prefix 'tachy-' (often misspelled as 'achy' in this context) comes from Greek and means fast or rapid, as seen in words like tachycardia.

Yttrium is a chemical element with the atomic number 39, and its chemical symbol is Y.

If you travel one mile every minute, there are 60 minutes in an hour, so you travel 60 miles in one hour.

Liquids have a definite volume because their particles are close together, but they lack a definite shape because the particles can slide past one another, allowing the liquid to take the shape of its container.

Pi is an irrational number, meaning its decimal representation is infinite and non-repeating. Therefore, it cannot be expressed as an exact fraction or a terminating decimal.

A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself. The smallest such number is 2.

CaSO4 is the chemical formula for calcium sulfate. The subscript 4 indicates four oxygen atoms attached to the sulfur atom.

 The Ideal gas law is PV = nRT