Based on following information answer question:

Apex Ltd. issued to public ₹10,00,000, 10% Debentures of ₹100 each at par, redeemable at a premium of 20%. It also issued 10,000, 11% Debentures ₹100 each as collateral security of against bank loan of ₹8,00,000. 

The company bought building worth ₹50,00,000 from Beta Ltd. against a cheque of ₹20,00,000 and balance by issue of 12% Debentures of ₹100 each at a premium of 20%.

Which of the following correctly explains the meaning of collateral security?

Additional security mortgaged against a loan, which is put to use only when primary security remains insufficient to cover up default on repayment of loan

The correct answer is Option (3) - Additional security mortgaged against a loan, which is put to use only when primary security remains insufficient to cover up default on repayment of loan.

A collateral security may be defined as a subsidiary or secondary or additional security besides the primary security when a company obtains a loan or overdraft from a bank or any other financial Institution. It may pledge or mortgage some assets as a secured loan against the said loan. But the lending institutions may insist on additional assets as collateral security so that the amount of loan can be realised in full with the help of collateral security in case the amount from the sale of principal security falls short of the loan money. In such situation, the company may issue its own debentures to the lenders in addition to some other assets already pledged. Such an issue of debentures is known as ‘Debentures issued as Collateral Security’. If the company fails to repay the loan along with interest, the lender is free to receive his money from the sale of primary security and if the realisable value of the primary security falls short to cover the entire amount, the lender has the right to invoke the benefit of collateral security whereby debentures may either be presented for redemption or sold in the open market. Debentures issued as collateral security can be dealt within two ways in the books of the company.