black book online trade in

The price of a share at the beginning of trading was $633. At the close of trading, the price of the same share was $493. By how much did the price go down at the end of the day? => $115 or $140 or $190 or $215..

When natural gas is burnt in limited supply of air, the resulting soot is deposited on the underside of a revolving disc. This is carbon black and it is then scraped off and filled in bags. It differs from lamp black in being not so greasy. Carbon black is added to th..

Describe the pattern of the graph of the situation. "The value of a car from the time it was purchased as a new car to the time it was traded in 5 years later." => Decreasing and then increasing or Increasing and then decreasing or Increasing or Decreasing..

Lamp Black is also known as Soot. Soot is obtained by the incomplete combustion of carbonaceous, fuels, especially oil fuels, in limited supply of air. The soot settles on the cooler parts of the chamber, and can be collected by scrapping it (Fig.10.5). It is used in the manufacture of pr..

Consider two bodies of equal surface areas suspended in a room. One of the bodies has a polished surface and the other is painted black. After sufficient time, the temperature of both the bodies are equal to the room temperature. As the surface areas of the bodies are the same, equal amou..

It is prepared by heating white phosphorus to about 470 K under high pressure of 1200 atmospheres in inert atmosphere. (i) It has metallic lustre. (ii) It is most inactive form of phosphorus. (iii) It has a layer type structure in which each layer consists of phosphorus atoms. Some ph..

There are some gray and some black buttons in the figure. Identify the ratio of gray buttons to black buttons. => 5 : 9 or 1 : 2 or 4 : 5 or 5 : 4..

There are 19 books on Geography, 16 books on Zoology and 20 books on Math in a bundle of books. Three books are selected one after the other. Find P(book on Zoology, book on Geography, no book on Math). => 2 321 or 152 ..

There are 6 drawing books and 15 work books in a school bag. A book is picked from the bag. Which book is least likely to be picked? => drawing book or work book or both are equally likely or none of the above..

Botanical survey of India publishes this book. This book provides information about plant species which are rare, endangered or endemic, but all of which are grown in botanical garden..