(a) Two lens have power of (i) +2D (ii) -4D.What is the nature and focal length of each lens?
(b) An object is kept at a distance of 100cm from each of the above lenses . Calculate the
(i) image distanc
Functional groups and isomerism
What are isomers? Draw the structural isomers of:
2. Draw the structures of :
a) butanoic acid
c) acetic acid
i)What are functional groups?
ii) Name a functional g
The Sermon At Benares
1. When her son dies, Kisa Gotami goes from house to house. What does she
ask for? Does she get it? Why not?
Answer: Kisa Gotami goes from house to house in the hope of getting some wonder
drug which would rekindle the life in her de
THE HUMAN EYE
Illustration of the proposed eco-city
In 2005, the Shanghai Industrial Investment Corporation (SIIC) hired the
consultancy Arup to design a city which would exclusively use
sustainable energy, be self-sufficient and reduce energy consumption by
PERIODIC CLASSIFICATION OF ELEMENTS
Q1) What is Dobereiners law of triads and give example.
Ans) Johann Wolfgang Dbereiner was a German chemist who is best known for work that
foreshadowed the periodic law for the chemical elements. His law states that: W
THE INDIAN HIGH SCHOOL , DUBAI
Grade: 9& 10(girls)
Exercise I: The following passages are incomplete. One word has been omitted in every line
against which there is a blank. Indicate the place where the word has to be inserted with a /
NAME OF NAME OF
THE DAMS THE RIVER
Bhagirathi River Uttarakhand
highest dam at
about 856 feet
Nangal Dam Sutlej river
largest dam in the
country at about
738 feet high
Hirakud Dam Mahanadi river
In 1948, the World Health Organization held the First World Health Assembly. The Assembly decided to
celebrate 7 April of each year, with effect from 1950, as the World Health Day. The World Health Day is
held to mark WHO's founding, and is seen as an opp
FA3 (NW) 5 Marks
(Submit by 18th
Assignment- Global Dimensions of health
An insight into Global health
a) WHO & its functioning.
b) Appreciate vital role played by UNICEF in child health &
QUESTION BANK 2
DATE OF SUBMISSION ( 15.11.12 )
1. Differentiate between saturated and unsaturated hydrocarbons.
2. Define homologous series.
3. List the properties of homologous series.
4. Identify the straight chain, branched chain, cyclic chain .Write
QUESTION BANK - 3
Why are carbon & its compound used as fuels? Justify with chemical
Why is the flame of unsaturated hydrocarbon sooty?
Explain the following:
a. Air holes of a gas burners have to be cleaned when heated vessels get
Atmospheric refraction The refraction of light caused by the earths atmosphere
(having air layers of varying optical densities) is called atmospheric refraction.
Some optical phenomena in nature that occur due to atmospheric refract