Answer: B) Potential energy Explanation: An object at rest may have Potential energy.

The persons whose primary investing objective is to preserve capital while generating a tax-free income stream, then municipal bonds are worth considering. Municipal bonds (munis) are debt obligations issued by government entities. When you buy a municipal bond, you are loaning money to the issuer in exchange for a set number of interest payments over a predetermined period. At the end of that period, the bond reaches its maturity date, and the full amount of your original investment is returned to you.   Types of Municipal Bonds : Municipal bonds come in the following two varieties: 1. General obligation bonds (GO)2. Revenue bonds General obligation bonds, issued to raise immediate capital to cover expenses, are supported by the taxing power of the issuer. Revenue bonds, which are issued to fund infrastructure projects, are supported by the income generated by those projects.   Both types of bonds are tax exempt and particularly attractive to risk-averse investors due to the high likelihood that the issuers will repay their debts.

Answer: D) Tuber Explanation: Tuber is considered as a modified stem. These type of stems carry out special functions that are important for the plant to survive. Tubers serves as a food reserve and bearing buds wherein new plants can grow.

Answer: C) 042 Explanation: From all the hints given,  only 042 satisfies and it unlocks the key.

Answer: A) Green & Red Explanation:

Answer: B) HSBC Bank Explanation: HSBC (Hongkong and Shanghai Banking Corporation) is the first bank to introduce ATM concept in India in the year 1987 in Mumbai.

Answer: A) Proteins Explanation: Here the Nitrogenous Food is Proteins. Nitrogenous Food :: The animal body is more than a machine. It requires fuel to enable it not only to work but also to live, even without working. A part of the food eaten must go to maintain the body Nitrogenous food compounds are sometimes classed together under the name of proteins. These may be divided into proteids, gelatinoids, and extractives.

Answer: C) cosx Explanation:   Thus, the derivative of sinx by first principle is cosx.