how to pass high school library

It is a technique used for creating multiple copies of a given gene. A chromosome of an organism is broken into small fragments comprising of one or a few genes with the help of restriction endo-nucleases. Each fragment is joined to a suitable vehicle DNA, forming recombinant DNAs of different nat..

A jet when 3400 m high passes vertically above another jet at an instant when the angles of elevation of the two jets from the same point on the ground are 35° and 20° respectively. Find the vertical distance between the two jets to the nearest meter. => 1630 m or 1638 m..

Zelma's parents, to encourage her, promised to give her $600 if she would pass the high school finals and $80 more for every 'A' grade she would get in her subjects. Zelma received $920 as her prize. Solve the equation, 600 + 80 s = 920, to find s , the number of subje..

Nitrogen readily combines with highly electropositive metals (Group 1), even at room temperature, to give nitrides. For example,..

Metals have high tensile strength. Metals can resist stretching without breaking. A strong electrostatic attraction between the positively charged kernels and the mobile electrons surrounding them is the reason for tensile strengt..

For high fidelity reception, the audio frequencies from 20Hz to 20000Hz must be reproduced. This requires a bandwidth + 20000Hz i.e., 40000Hz. (Note that both the sidebands must be reproduced). The bandwidth actually assigned for AM transmission is 20000Hz. This is done to keep the inter..

In this process, coal is heated in the absence of air to about 1273 - 1473 K. The major products of high temperature pyrolysis are, Coal..

Electron affinity is the amount of energy released, when an isolated gaseous atom accepts an electron to form a negative ion. The other atom participating in the formation of an ionic compound must form an anion by gaining an electron (s). Higher electron affinity favours the formation of an anion..

Welcome to the brave new world of high-tech dentistry. Here, teeth stained by coffee, tea and tobacco are bleached considerably white in a single sitting, and crowned and laminated in a single visit. Infected gum tissue can be vaporized bloodlessly in a few minutes with lasers. Even thou..

Elements that have higher ionisation energies cannot form ionic bonds, as they cannot lose electrons easily. Instead, they acquire stability by mutual sharing of electrons, and therefore form covalent bond..