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In the context of banking, an account is opened and not started or begun. Therefore, "open" would be the appropriate verb. The sentence would read: "When my elder brother decided to open a current account with United Bank for Africa..."

The "branches" of a bank are the different locations of a bank. The sentence would read: "When my elder brother decided to open a current account with United Bank for Africa, he walked into one of its branches..."

When opening a bank account, one fills out "forms" to provide necessary information. The sentence would read: "When my elder brother decided to open a current account with United Bank for Africa, he walked into one of its branches and obtained the necessary forms which he completed and returned to the..."

The person handling the account opening process and assisting with the necessary forms would most likely be a manager. Bank managers oversee the operations at a branch and typically handle account-related tasks. A director or chairman has higher roles in the organisation. A "Principal" works in a school setting and not a bank.

In banking, when a person is issued paying-in slips, they are required to deposit money into an account. The completed sentence would then be: "He was then given paying-in slip.

In the context of banking, the most logical option is cheques, as they are commonly issued for transactions. Therefore, the completed sentence would be: Soon, he started issuing cheques to people with whom he transacted business.

In banking, when a cheque has an irregular signature, it is not honoured i.e. it is not cleared by the bank and so, the transaction is not approved. The completed sentence would be: "Whenever his signature was irregular, his cheque was not honoured."

When someone needs to borrow money from a bank, they request a loan. Therefore, the completed sentence would be: "Once, he wanted to obtain a loan, and the bank insisted on -100-."

When a person applies for a loan, collateral is an asset pledged to secure the loan. When applying for a loan, you have to pledge some assets should in case you cannot pay the loan.

The Molecular formula of the compound is CH\(_3\)CH\(_2\)COOCH\(_2\)CH\(_3\). The name of the compound is Ethyl propanoate. i.e it is an alkanoate or esters. It is actually a product from the reaction of propanoic acid, CH\(_3\)CH\(_2\)COOH and Ethanol, CH\(_3\)CH\(_2\)OH. Hence, the correct answer is Ester - Option B

From the graph, when you extrapolate when the temperature is @ 60 deg, Solubility = 5.5 mol/dm3 Also, when the temperature is @ 20 deg, Solubility = 4.0 mol/dm3. Difference in solubility = 5.5 - 4.0 = 1.5 mol/dm3 Recall that, solubility = amount x 1000/ volume of solvent 1.5 = n x 1000/500 n = 1.5/2 n = 0.750 mole - Option A

Zero order - A horizontal line indicates that the reaction rate is independent of the reactant concentration. The rate equation is: rate = k First order - A straight line passing through the origin signifies that the reaction rate is directly proportional to the reactant concentration. The rate equation is: rate = k[X] Second order - A curved plot indicates that the reaction rate is proportional to the square of the reactant concentration. The rate equation is: rate = k[X]2

The Molecular formula of the compound is CH\(_3\)CH\(_2\)COOCH\(_2\)CH\(_3\). The name of the compound is Ethyl propanoate. i.e it is an alkanoate or esters. It is actually a product from the reaction of propanoic acid, CH\(_3\)CH\(_2\)COOH and Ethanol, CH\(_3\)CH\(_2\)OH. Hence, the correct answer is Ester - Option B

Element S has an atomic number of 10, which means it belongs to Group O. Recall that elements in group O are inert gases (Unreactive) as they have completely filled electrons in their outermost shell. However, no other element in the option has its outermost shell electrons completely filled. The correct answer is option C

All non-metals will gain electron(s) to become negatively charge unlike metals which lose electron(s) to become positively charged. Chlorine atom is a non-metal in group VII, once it gains an electron to have its outermost shell completely filled with electrons, thus becoming negatively charged. The correct answer is option D