high school library tips

. You are Vinay Srinivasan, the Secretary of the Cultural Society of your school. Your school has been asked to present a programme on the All India Radio on the popular show 'Children's World'. Write a notice in not more than 50 words for your school notice board invi..

Use the rough workspace to plan out your message or note. Remember it has to be written within the stipulated word limit. First note down all the important details that need to be included. Then write out the note. Count the number of words. If it exceeds the word limit, cut it down by usin..

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..

Alice bought a steak platter for lunch for $20. She paid some money for tax and tip. The total bill came up to $24. How much did she pay for tax and tip? => $3 or $2 or $5 or $4..

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..