Explanation

Propranolol is a non-selective beta-blocker that blocks both beta-1 and beta-2 receptors.

Therapeutic uses:

Used to treat conditions like hypertension, angina pectoris, arrhythmias, migraines, and hyperthyroidism. 

Side effects:

Due to its non-selective nature, potential side effects can include bronchospasm in individuals with asthma, fatigue, and cold extremities. 

Explanation

A) Methane (CH₄) - Molecular weight = 16 g/mol
B) Ethane (C₂H₆) - Molecular weight = 30 g/mol
C) Propane (C₃H₈) - Molecular weight = 44 g/mol
D) Butane (C₄H₁₀) - Molecular weight = 58 g/mol

Correct Answer: D) Butane

Butane is the heaviest among the options listed, with a molecular weight of 58 g/mol.

Explanation

An indehiscent integument megasporangium in the form of ovule is found in spermatophytes.

The ovule then forms the seed after fertilization

Explanation

In sociology, a community is defined as a collection of people who adhere to a social structure within a society.

Sociology means انسانی معاشرے کی تحقیق و ترقی پر مبنی علم

Community means سماج, معاشرہ, فرقہ, برادری

Explanation

A well-accepted example of pleomorphism is Helicobacter pylori, which exists as both a helix-shaped form (classified as a curved rod) and a coccoid form.

H. pylori is a type of bacteria that infects your stomach the first part of your small intestine (the duodenum).

This can cause redness and soreness (inflammation)

Explanation

Parvoviruses are single-stranded DNA viruses that have a predilection for mitotically active host cells.

Parvoviruses that infect rats include (Kilham's) rat virus (RV), (Toolan's) H-1 virus, rat parvovirus (RPV), and rat minute virus (RMV).

Explanation

Uranium is the most widely used fuel by nuclear power plants for nuclear fission.

Nuclear power plants use a certain type of uranium—U-235—as fuel

because its atoms are easily split apart.

Explanation

• Oligosaccharides are also called Carbohydrates
• ***
• Oligosaccharides are a type of carbohydrate chain made up of three to 10 simple sugars, which are also known as monosaccharides ( 1 ).
• To give you some perspective, table sugar, also called sucrose, is made up of two simple sugars joined together — glucose and fructose.
  

Explanation

Resistivity is a measure of how strongly a material opposes the flow of electric current.

Here's a general classification based on resistivity (in Ω-cm):

$10^5$ and 10 ^9 Ω-cm, it is classified as an insulator because it resists the flow of electric current very strongly.

Explanation

The momentum 

𝑝 of a photon is given by the equation:

𝑝=ℎ/𝜆 

where:

h is Planck's constant,

λ is the wavelength of the photon.

Since photons are massless, their momentum is not related to mass but to their wavelength.