Choose a topic to test your knowledge and improve your CBES Board Class 11 skills
Species which are not the natural inhabitants of the local habitat but are introduced into the system are called:
Each couple should produce only two children which will help in
The percentage of species that are contained by Tropical rain forests are
Growth in the human population has increased the rate of
National parks and sanctuaries are established for the purpose of
Biodiversity has contributed to the development of
Which is of the following is not true regarding the causes of loss of Biodiversity?
The Government of India passed the Wildlife Protection Act in the year
IUCN publishes information about endangered species world-wide as the
What was the main cause of latter Earthquakes?
How many divisions are there on Richter Scale?
Natural disasters are
The cause for floods in India is due to
Tsunamis are caused when
Which one of the following states receives floods in the winter?
The most disastrous giant waves are
The river valley project has been constructed to check floods in India is
What was the cause of the Koyna Earthquake?
Debris flow that originates on the slope of a volcano is known as
Which instrument measures the seismic waves?
Far less dramatic disaster is
Which soil is most widespread over Peninsular India?
Ravines are widespread in the
What is the function of clay in soils?
Which is the most widespread soil in India?
Which of the following states have very little alluvial soil area?
Khadar soils are found in:
Which of the following soils contain a large proportion of sodium, potassium, and magnesium?
Cultivation should never be done on the slope gradient of
Name the crop for which black soil is best suited.
In arid and semi-arid areas, lands unsuitable for cultivation should be converted into
The state has very little alluvial soil area is
Black soils are best for growing
Vegetation cover is very scanty in parts of Rajasthan due to
Farm forestry refers to the
How much part of the total geographical area of India is under forests?
State the annual rainfall required for deciduous monsoon forests.
The world’s richest region from marine biodiversity is
The Nanda Devi Biosphere Reserve is situated in
Bamboos are the important raw material for making
Monsoon or Tropical Deciduous forests are found in areas with rainfall between
Plants remain leafless for most of the year in
Which of the following was the purpose of Project Tiger?
Bamboos are grown most commonly at
Khar, Neem, Khejri, Palas are:
Name a river of antecedent drainge.
Which is the north-flowing tributary of Ganga?
A relief which divides two areas drained by the river is known as
Name the source of the Krishna River.
In the mountainous course, the Himalayan rivers form