Explanation

Bond order = ½ (Number of bonding electrons − Number of antibonding electrons)  

For H₂:  

- Bonding electrons = 2  

- Antibonding electrons = 0  

Bond order = ½ (2 − 0) = 1

Explanation

Cartilaginous rings in the respiratory tract, like those in the trachea and bronchi, serve multiple functions: 

Support:

The rings provide structural support to the airways.

They keep the trachea and bronchi open and stable. 

Keep the passage open:

This is directly related to the support function.

Prevent collapsing:

The rings are crucial in preventing the collapse of the airways, especially during exhalation when pressure changes occur. 

Explanation

A photon is a boson, which is a particle with an integer spin that transmits electromagnetic force. 

Proton: Protons are fermions, which have a half-integer spin. 

Neutrino: Neutrinos are also fermions. 

Pion: While considered a meson, pions are composite particles made of quarks and antiquarks and are classified as bosons. 

Explanation

 There are two isomers possible for the molecular formula C₂H₆O: ethanol (also known as ethyl alcohol) and dimethyl ether.

These two molecules have the same number of carbon, hydrogen, and oxygen atoms

However, their atoms are arranged differently, resulting in distinct properties

Explanation

  Plastids are organelles specific to plant cells, responsible for photosynthesis and the storage of starch.

Animal cells do not have plastids. 

Explanation

"6.022 × 10²³ atoms of carbon"

Correct — Each CO₂ molecule contains 1 carbon atom

So, 1 mole of CO₂ has 6.022 × 10²³ carbon atoms

Explanation

 White blood cells, also called leukocytes, are primarily responsible for fighting infections by engulfing and destroying harmful pathogens through a process called phagocytosis. 

Explanation

The process by which an organism develops from a single cell into a multicellular organism is called development. 

Development refers to the series of complex changes

That occur in an organism from fertilization to maturity, involving cell division, differentiation, and the formation of tissues and organs. 

Explanation

If the speed of a moving particle increases, the wavelength associated with it will decrease. 

This is due to the relationship between wavelength and momentum in the de Broglie equation, where wavelength is inversely proportional to velocity. 

Explanation

 The endometrium is the inner lining of the uterus, and this is where a fertilized embryo implants to begin pregnancy.