Q1. Write a brief note on the preparation, structure, and bonding of diborane (B₂H₆). (6 marks)
Answer:
Diborane can be prepared by reducing boron trifluoride (BF₃) with lithium aluminium hydride or by reacting sodium borohydride (NaBH₄) with acids. The molecule consists of two boron atoms linked to four terminal hydrogen atoms and two bridging hydrogen atoms. The four terminal B–H bonds are normal covalent bonds, while the two bridging hydrogen atoms form three-centre two-electron bonds,
Consumer: The individual who uses or consumes a product or service. Customer: The individual or organization that purchases a product or service. Client: The individual or organization that receives personalized or professional services, often involving an ongoing relationship.
Consumer behavior all activities associated with the purchase, use, and disposal of goods and services, including the emotional, mental, and behavioral processes that precede and follow these activities.
Internal Influences
Below are clear, slightly detailed (“little big”) answers to all Short Answer and Long Answer questions from the image.
Internal audits are conducted by an organization’s internal audit team to evaluate internal controls, risk management, and operational efficiency. They focus on improving internal processes.
Regulatory audits are performed by external regulators or certified auditors...
A Python dictionary is a collection of key-value pairs used to store data in an unordered, mutable structure. You create a dictionary using curly braces `{}` with key-value pairs, for example: `my_dict = {"name": "Alice", "age": 25}`. You can also use the `dict()` constructor to create dictionaries. Accessing values is done by referring to their keys: `my_dict["name"]` returns `"Alice"`.
You add or update items by assigning a value to a key, such as `my_dict["city"] = "New York"` to add new or
1.Saliva: Lubricates food for swallowing, moistens the mouth, and contains the enzyme Salivary Amylase (Ptyalin) which begins the digestion of carbohydrates (starches).HCl (Hydrochloric Acid): Maintains an acidic pH (1.5–3.5) in the stomach to activate pepsinogen into pepsin (for protein digestion) and kills ingested bacteria/microbes.
2.BMR : is the minimum amount of energy (calories) required by the body to maintain vital life functions (breathing, circulation, cell production) while at complete
🐍 Python Loop and Branching Statements
Python provides powerful structures for iteration (loops) and flow control (branching statements) that allow you to execute blocks of code repeatedly or conditionally.
Python Loop Statements
Loops are used to execute a block of code multiple times. The main loop types in Python are while and for.
1. The while Loop
The while loop repeatedly executes a block of statements as long as a given condition is True.
* Syntax:
while condition:
# statement(s)