CBSE Class 10 Hindi - Kshitij - MCQ and Online Tests - Unit 11 - बालगोबिन भगत
CBSE Class 10 Hindi – Kshitij – MCQ and Online Tests – Unit 11 – बालगोबिन भगत
CBSE Class 10 Hindi - Kshitij - MCQ and Online Tests - Unit 10 - नेताजी का चश्मा
CBSE Class 10 Hindi – Kshitij – MCQ and Online Tests – Unit 10 – नेताजी का चश्मा
CBSE Class 10 Hindi - Kshitij - MCQ and Online Tests - Unit 9 - संगतकार
CBSE Class 10 Hindi – Kshitij – MCQ and Online Tests – Unit 9 – संगतकार
CBSE Class 10 Hindi - Kshitij - MCQ and Online Tests - Unit 8 - कन्यादान
CBSE Class 10 Hindi – Kshitij – MCQ and Online Tests – Unit 8 – कन्यादान
CBSE Class 10 Hindi - Kshitij - MCQ and Online Tests - Unit 7 - छाया मत छूना
CBSE Class 10 Hindi – Kshitij – MCQ and Online Tests – Unit 7 – छाया मत छूना
CBSE Class 10 Hindi - Kshitij - MCQ and Online Tests - Unit 6 - यह दंतुरहित मुस्कान और फसल
CBSE Class 10 Hindi – Kshitij – MCQ and Online Tests – Unit 6 – यह दंतुरहित मुस्कान और फसल
CBSE Class 10 Hindi - Kshitij - MCQ and Online Tests - Unit 5 - उत्साह और अट नहीं रही
CBSE Class 10 Hindi – Kshitij – MCQ and Online Tests – Unit 5 – उत्साह और अट नहीं रही
CBSE Class 10 Hindi - Kshitij - MCQ and Online Tests - Unit 4 - आत्मकथ्य
CBSE Class 10 Hindi – Kshitij – MCQ and Online Tests – Unit 4 – आत्मकथ्य
CBSE Class 10 Hindi - Kshitij - MCQ and Online Tests - Unit 3 - सवैया और कवित्त
CBSE Class 10 Hindi – Kshitij – MCQ and Online Tests – Unit 3 – सवैया और कवित्त
CBSE Class 10 Hindi - Kshitij - MCQ and Online Tests - Unit 2 - राम-लक्ष्मण-परशुराम संवाद
CBSE Class 10 Hindi – Kshitij – MCQ and Online Tests – Unit 2 – राम-लक्ष्मण-परशुराम संवाद
CBSE Class 10 Hindi - Kshitij - MCQ and Online Tests - Unit 1 - सूरदास के पद
CBSE Class 10 Hindi – Kshitij – MCQ and Online Tests – Unit 1 – सूरदास के पद
CBSE Class 12 French - MCQ and Online Tests - Unit 15
CBSE Class 12 French – MCQ and Online Tests – Unit 15
CBSE Class 12 French - MCQ and Online Tests - Unit 14
CBSE Class 12 French – MCQ and Online Tests – Unit 14
CBSE Class 12 French - MCQ and Online Tests - Unit 12
CBSE Class 12 French – MCQ and Online Tests – Unit 12
CBSE Class 12 French - MCQ and Online Tests - Unit 13
CBSE Class 12 French – MCQ and Online Tests – Unit 13
CBSE Class 12 French - MCQ and Online Tests - Unit 11
CBSE Class 12 French – MCQ and Online Tests – Unit 11
CBSE Class 12 French - MCQ and Online Tests - Unit 10
CBSE Class 12 French – MCQ and Online Tests – Unit 10
Every year CBSE conducts board exams for 12th standard. These exams are very competitive to all the students. So our website provides online tests for all the 12th subjects. These tests are also very effective and useful for those who preparing for competitive exams like NEET, JEE, CA etc. It can boost their preparation level and confidence level by attempting these chapter wise online tests.
These online tests are based on latest CBSE Class 12 syllabus. While attempting these our students can identify the weak lessons and continuously practice those lessons for attaining high marks. It also helps to revise the NCERT textbooks thoroughly.
CBSE Class 12 French – MCQ and Online Tests – Unit 10
Every
CBSE Class 12 French - MCQ and Online Tests - Unit 7
CBSE Class 12 French – MCQ and Online Tests – Unit 7
CBSE Class 12 French - MCQ and Online Tests - Unit 8
CBSE Class 12 French – MCQ and Online Tests – Unit 8
CBSE Class 12 French - MCQ and Online Tests - Unit 9
CBSE Class 12 French – MCQ and Online Tests – Unit 9
CBSE Class 12 French - MCQ and Online Tests - Unit 6
CBSE Class 12 French – MCQ and Online Tests – Unit 6
CBSE Class 12 French - MCQ and Online Tests - Unit 3
CBSE Class 12 French – MCQ and Online Tests – Unit 3
CBSE Class 12 French - MCQ and Online Tests - Unit 4
CBSE Class 12 French – MCQ and Online Tests – Unit 4
CBSE Class 12 French - MCQ and Online Tests - Unit 5
CBSE Class 12 French – MCQ and Online Tests – Unit 5
CBSE Class 12 French - MCQ and Online Tests - Unit 2
CBSE Class 12 French – MCQ and Online Tests – Unit 2
CBSE Class 12 French - MCQ and Online Tests - Unit 1
CBSE Class 12 French – MCQ and Online Tests – Unit 1
CBSE Class 12 Biology - MCQ and Online Tests - Unit 16 - Environmental Issues
CBSE Class 12 Biology – MCQ and Online Tests – Unit 16 – Environmental Issues
Every year CBSE conducts board exams for 12th standard. These exams are very competitive to all the students. So our website provides online tests for all the 12th subjects. These tests are also very effective and useful for those who preparing for competitive exams like NEET, JEE, CA etc. It can boost their preparation level and confidence level by attempting these chapter wise online tests.
These online tests are based on latest CBSE Class 12 syllabus. While attempting these our students can identify the weak lessons and continuously practice those lessons for attaining high marks. It also helps to revise the NCERT textbooks thoroughly.
CBSE Class 12 Biology – MCQ and Online Tests – Unit 16 – Environmental Issues
Question 1.
Acid Rain comes under which type of pollution?
(a) Water pollution
(b) Air pollution
(c) Soil pollution
(d) Sound Pollution
Answer
Answer: (c) Soil pollution
Question 2.
Bhopal gas tragedy of 1884 took place because methyl isocyanate reacted with:
(a) DDT
(b) Ammonia
(c) CO2
(d) Water
Answer
Answer: (c) CO2
Question 3.
Which chemical substance affects the Ozone Layer?
(a) Chlorofluorocarbon
(b) Chlorine
(c) Hexafluorocarbon
(d) Molecular Carbon
Answer
Answer: (a) Chlorofluorocarbon
Question 4.
Chlorofluoro carbon are responsible for:
(a) Acid rain
(b) Ozone layer depletion
(c) Global warming
(d) Thermal inversion
Answer
Answer: (d) Thermal inversion
Question 5.
Fluoride pollution mainly affect:
(a) Teeth
(b) Kidney
(c) Brain
(d) Heart
Answer
Answer: (a) Teeth
Question 6.
Environment (Protection) Act came into force in?
(a) 1986
(b) 1989
(c) 1992
(d) 1993
Answer
Answer: (c) 1992
Question 7.
In Ozone Degradation which element acts as catalyst?
(a) Chlorine
(b) Flurine
(c) Oxygen
(d) Potassium
Answer
Answer: (a) Chlorine
Question 8.
Nutrient enrichment of water bodies causes:
(a) Stratification
(b) Eutrophication
(c) Succession
(d) None of these
Answer
Answer: (b) Eutrophication
Question 9.
Ozone Layer is found in :
(a) Stratosphere
(b) Lithosphere
(c) Troposphere
(d) Hemisphere
Answer
Answer: (a) Stratosphere
Question 10.
Pollutant which causes acid rain is:
(a) SO2
(b) CO2
(c) CO
(d) Hydrocarbon
Answer
Answer: (a) SO2
Question 11.
Increased skin cancer and high mutation rate are due to:
(a) Acid Rain
(b) Ozone Depletion
(c) CO2 Pollution
(d) CO Pollution
Answer
Answer: (b) Ozone Depletion
Question 12.
Which one of the following is not a greenhouse gas?
(a) Methane
(b) CO2
(c) Chlorofluoro carbon
(d) Hydrogen
Answer
Answer: (d) Hydrogen
Question 13.
Minimata disease is caused by:
(a) ByChromium
(b) By Cadmium
(c) By Methyl mercury
(d) By Radioactive elements
Answer
Answer: (c) By Methyl mercury
Question 14.
Permissible noise levels in a residential area at night time is:
(a) 35 dB
(b) 40 dB
(c) 45 dB
(d) 50 dB
Answer
Answer: (c) 45 dB
Question 15.
A mutagenic pollutant is:
(a) Organophosphate
(b) Resines
(c) Hydrocarbons
(d) Nitrogen oxides
Answer
Answer: (c) Hydrocarbons
Question 16.
Natural air pollutant are:
(a) Pollen Grains
(b) Gases of Volcanic Eruption
(c) Aerosol
(d) Fluorides
Answer
Answer: (b) Gases of Volcanic Eruption
Question 17.
Rain is called acid rain, its pH is below:
(a) 7
(b) 6.5
(c) 6
(d) 5.6
Answer
Answer: (d) 5.6
Question 18.
Bluebaby syndrome results from:
(a) Excess of TDS
(b) Excess of DO
(c) Excess of chloride
(d) Methaemoglobin
Answer
Answer: (d) Methaemoglobin
Question 19.
Common indicator organism of water pollution is:
(a) Lemna pancicostata
(b) Eichhomia crassipes
(c) Escherichia coli
(d) Entamoeba histolytica
Answer
Answer: (c) Escherichia coli
Question 20.
Pollution of SO2 destroys:
(a) Lichen
(b) Fungi
(c) Algae
(d) Fish
Answer
Answer: (a) Lichen
CBSE Class 12 Biology - MCQ and Online Tests - Unit 15 - Biodiversity and Conservation
CBSE Class 12 Biology – MCQ and Online Tests – Unit 15 – Biodiversity and Conservation
Every year CBSE conducts board exams for 12th standard. These exams are very competitive to all the students. So our website provides online tests for all the 12th subjects. These tests are also very effective and useful for those who preparing for competitive exams like NEET, JEE, CA etc. It can boost their preparation level and confidence level by attempting these chapter wise online tests.
These online tests are based on latest CBSE Class 12 syllabus. While attempting these our students can identify the weak lessons and continuously practice those lessons for attaining high marks. It also helps to revise the NCERT textbooks thoroughly.
CBSE Class 12 Biology – MCQ and Online Tests – Unit 15 – Biodiversity and Conservation
Question 1.
Which type of living organisms given below are listed in Red Data Book”?
(a) Rare species
(b) Rare and endangered species
(c) Endangered species
(d) None of these
Answer
Answer: (b) Rare and endangered species
Question 2.
Reserve biosphere of Sundarban is situated in which of the following states :
(a) Bihar
(b) Uttar Pradesh
(c) Assam
(d) West Bengal
Answer
Answer: (d) West Bengal
Question 3.
Bandipurin Karnataka is the site of project:
(a) Elephant
(b) Hangul
(c) Tiger
(d) Peacock
Answer
Answer: (c) Tiger
Question 4.
Biodiversity Act of India was passed by the Parliament in the year:
(a) 1996
(b) 1992
(c) 2002
(d) 2000
Answer
Answer: (c) 2002
Question 5.
Red Data Book is produced by:
(a) IUCN
(b) WWF
(c) IBWL
(d) None of these
Answer
Answer: (a) IUCN
Question 6.
Lion-tailed Macaque is found in:
(a) Western Ghats
(b) Caucasus
(c) Eastern Ghats
(d) Western Himalaya
Answer
Answer: (a) Western Ghats
Question 7.
Kanha National Park is famous for:
(a) Birds
(b) Rhinoceros
(c) Tigers
(d) Crocodiles
Answer
Answer: (c) Tigers
Question 8.
Project tiger in India was started in the year:
(a) 1973
(b) 1981
(c) 1985
(d) 1986
Answer
Answer: (a) 1973
Question 9.
Lions m India are now found in :
(a) Jim Corbett National Park
(b) Forests of Madhya Pradesh
(c) Forests of Western Ghats
(d) Fir Forests
Answer
Answer: (d) Fir Forests
Question 10.
Dudhwa National Part is located in:
(a) In Himachal Pradesh
(b) In Uttar Pradesh
(c) In Madhya Pradesh
(d) Arunachal Pradesh
Answer
Answer: (b) In Uttar Pradesh
CBSE Class 12 Biology - MCQ and Online Tests - Unit 14 - Ecosystem
CBSE Class 12 Biology – MCQ and Online Tests – Unit 14 – Ecosystem
Every year CBSE conducts board exams for 12th standard. These exams are very competitive to all the students. So our website provides online tests for all the 12th subjects. These tests are also very effective and useful for those who preparing for competitive exams like NEET, JEE, CA etc. It can boost their preparation level and confidence level by attempting these chapter wise online tests.
These online tests are based on latest CBSE Class 12 syllabus. While attempting these our students can identify the weak lessons and continuously practice those lessons for attaining high marks. It also helps to revise the NCERT textbooks thoroughly.
CBSE Class 12 Biology – MCQ and Online Tests – Unit 14 – Ecosystem
Question 1.
Plant roots soil water is:
(a) Cellular water
(b) Surface water
(c) Humidity water
(d) Gravitational water
Answer
Answer: (d) Gravitational water
Question 2.
Submerged Rooted Hydrophyte are:
(a) Uticularia
(b) Prapa
(c) Nymphea
(d) Vallisnaria
Answer
Answer: (d) Vallisnaria
Question 3.
Xerophyte Contains:
(a) Deep roots
(b) Sunken stomata
(c) Thick cuticle
(d) All of these
Answer
Answer: (d) All of these
Question 4.
Soil particle determine the character of:
(a) Organisation
(b) Biomass
(c) Area capacity
(d) Soil plants
Answer
Answer: (a) Organisation
Question 5.
Soil developed from sedimented rock:
(a) Force Science
(b) Edaphology
(c) Pedogenesis
(d) All of these
Answer
Answer: (c) Pedogenesis
Question 6.
Who introduced term Ecosystem?
(a) Leaneous
(b) Reiter
(c) Odum
(d) Aristle
Answer
Answer: (b) Reiter
Question 7.
Small extremite animals of tropicalregion:
(a) Allen’s law
(b) Bergmen’s law
(c) Dollo’s law
(d) Cope’s law
Answer
Answer: (d) Cope’s law
Question 8.
Identity the Hetero Organism:
(a) Pistia
(b) Hydrilla
(c) Vallisnaria
(d) Casurina
Answer
Answer: (c) Vallisnaria
Question 9.
Hibernation of some animals:
(a) Regular
(b) Periodic
(c) Suddenly
(d) Temporary
Answer
Answer: (a) Regular
Question 10.
That animal who can bear one third loss of water of one third body weight is:
(a) Necturus
(b) Camel
(c) Wall Lizzard
(d) Kyton
Answer
Answer: (b) Camel
Question 11.
The average efficiency of energy transfer from herbivoure to carnivorce level is :
(a) 5%
(b) 10%
(c) 20%
(d) 30%
Answer
Answer: (b) 10%
Question 12.
Exchange of water in submerged plant:
(a) Stomata
(b) Normal surface
(c) Hydathode
(d) Lenticel
Answer
Answer: (b) Normal surface
Question 13.
Physical and chemical properties of soil studied by :
(a) Climatic factor
(b) Biotic factor
(c) Soil factor
(d) Topographic factor
Answer
Answer: (b) Biotic factor
Question 14.
Root hair absent in:
(a) Hydrophyte
(b) Halophyte
(c) Mesophyte
(d) Heliophyte
Answer
Answer: (a) Hydrophyte
Question 15.
A water co-efficient Mesophyte is:
(a) Cappais
(b) Agave
(c) Acacia
(d) Hemeris
Answer
Answer: (b) Agave
Question 16.
Kanha National Park is famous for:
(a) For Birds
(b) For Tendua
(c) For Tiger
(d) For Crocodile
Answer
Answer: (b) For Tendua
Question 17.
During food chain the maximum energy is stored in :
(a) Producers
(b) Decomposers
(c) Herbivoures
(d) Camivourse
Answer
Answer: (a) Producers
Question 18.
Ecological pyramids were first devised by:
(a) Charles Eltom
(b) R. Hesse
(c) R.A. Lindemann
(d) Justus von Liebig
Answer
Answer: (a) Charles Eltom
Question 19.
Gravitated carried soil is:
(a) Alluvial
(b) Muddy
(c) Glacier
(d) Compound
Answer
Answer: (d) Compound
Question 20.
Which of the following ecosystem has highest gross primary productivity:
(a) Grassland
(b) Coral reefs
(c) Mangrooves
(d) Rainforests
Answer
Answer: (b) Coral reefs
Question 21.
Which types of the following pyramid are never inverted?
(a) Pyramid of energy
(b) Pyramid of biomass
(c) Pyramid of number
(d) Pyramid of dry biomass
Answer
Answer: (a) Pyramid of energy
Question 22.
Best soil for plant growth is:
(a) Grit
(b) Sandy
(c) Soily
(d) Clay
Answer
Answer: (d) Clay
Question 23.
Water co-deficient contains:
(a) Large thin walled cells
(b) Large-vacuoles
(c) Membrane
(d) All of these
Answer
Answer: (c) Membrane
Question 24.
Which one of the following is not used for construction of ecological pyramid?
(a) Dry weight
(b) Number of individuals
(c) Rate of energy flow
(d) Fresh weight
Answer
Answer: (a) Dry weight
Question 25.
Biosphere means:
(a) Atmosphere
(b) Lithosphere and ionosphered
(c) Atmosphere, lithosphere and hydrosphere
(d) Hydrosphere lithosphere and ionsophere
Answer
Answer: (c) Atmosphere, lithosphere and hydrosphere
Question 26.
In the phosphorus cycle, weathring makes phosophate available first to:
(a) Producers
(b) Decomposers
(c) Consumers
(d) None of these
Answer
Answer: (a) Producers
Question 27.
Best type of pyramid which is always true is:
(a) Pyramid or energy
(b) Pyramid of Biomass
(c) Pyramid of number
(d) Both (a) and (c)
Answer
Answer: (a) Pyramid or energy
Question 28.
The largest ecosystem is :
(a) Forest ecosystem
(b) Marine ecosystem
(c) Pond ecosystem
(d) Grassland ecosystem
Answer
Answer: (b) Marine ecosystem
Question 29.
Ecology deals with:
(a) The arth and plants
(b) The relationship between organisms and their environment
(c) Economical growth of poor people
(d) The life under sea
Answer
Answer: (b) The relationship between organisms and their environment
Question 30.
More than 70 of world freshwater is contain in:
(a) Antarctica
(b) Glaciers and mountains
(c) Greenland
(d) Polar ice
Answer
Answer: (c) Greenland
Question 31.
Decomposers are:
(a) Autotrophs
(b) Autohetrotrophs
(c) Organotrophs
(d) Heterotrophs
Answer
Answer: (d) Heterotrophs
Question 32.
Which one of the following pair is mismatched?
(a) Prairies-Epiphytes
(b) Tundra-Permafrost
(c) Savannaha-Acacia trees
(d) Coniferous forests-Evergreen trees)
Answer
Answer: (a) Prairies-Epiphytes
Question 33.
Which of the following is the most stable ecosystem?
(a) Mountain
(b) Desert
(c) Forest
(d) Ocean
Answer
Answer: (b) Desert
Question 34.
What is the main cause of extinction of some species in tropical forests?
(a) Deforestation
(b) Afforestation
(c) Pollution
(d) Soil erosion
Answer
Answer: (a) Deforestation
Question 35.
Primary succession occurs in :
(a) Primary succession occurs
(b) Previously unoccupied area
(c) Both of the above
(d) None of these
Answer
Answer: (b) Previously unoccupied area
CBSE Class 12 Biology - MCQ and Online Tests - Unit 13 - Organisms and Populations
CBSE Class 12 Biology – MCQ and Online Tests – Unit 13 – Organisms and Populations
Every year CBSE conducts board exams for 12th standard. These exams are very competitive to all the students. So our website provides online tests for all the 12th subjects. These tests are also very effective and useful for those who preparing for competitive exams like NEET, JEE, CA etc. It can boost their preparation level and confidence level by attempting these chapter wise online tests.
These online tests are based on latest CBSE Class 12 syllabus. While attempting these our students can identify the weak lessons and continuously practice those lessons for attaining high marks. It also helps to revise the NCERT textbooks thoroughly.
CBSE Class 12 Biology – MCQ and Online Tests – Unit 13 – Organisms and Populations
Question 1.
Water holding capacity is maximum in:
(a) Clay
(b) Sand
(c) Silt
(d) Gravel
Answer
Answer: (a) Clay
Question 2.
Submerged hydrophytes havedisseced leaves for:
(a) Decreasing surface area
(b) Increasing surface area
(c) Reducing effect pf water currents
(d) Increasing number of stomata
Answer
Answer: (c) Reducing effect pf water currents
Question 3.
Animals undergo inactive stage during winters. It is called :
(a) Acclimatisation
(b) Hibernation
(c) Aestivation
(d) Adapatation
Answer
Answer: (b) Hibernation
Question 4.
Animals have innate ability to escape from predation. Select the incorrect example:
(a) Colour change in Chameleon
(b) Enlargement of body by swallowing air in puffer fish
(c) Poison fangas of snakes
(d) Melaninin in moths
Answer
Answer: (c) Poison fangas of snakes
Question 5.
Praying mantis is a good example of:
(a) Camouflage
(b) Mullarian mimicry
(c) Warning colouration
(d) Social insect
Answer
Answer: (a) Camouflage
Question 6.
Niche overlap is:
(a) Mutualism between two species
(b) Active cooperation between two species
(c) Tjvo different parasites on same food
(d) Sharing resources between two species
Answer
Answer: (d) Sharing resources between two species
Question 7.
Habitat together with functions of a species constitute its:
(a) Topography
(b) Trophic level
(c) Boundary
(d) Ecological niche
Answer
Answer: (d) Ecological niche
Question 8.
Science linking heredity with environment is:
(a) Ecology
(b) Ecophysiology
(c) Genecology
(d) Genetics
Answer
Answer: (c) Genecology
Question 9.
Ozone protects biosphere from high energetic:
(a) Infra-red rays
(b) Ultraviolet rays
(c) X-rays
(d) gamma rays
Answer
Answer: (b) Ultraviolet rays
Question 10.
The maximum growth rate occurs in :
(a) Lag phase
(b) Exponential, phase
(c) Stationary phase
(d) Senescent phase
Answer
Answer: (b) Exponential, phase
Question 11.
Plants growing in saline soil with high salt concentration are:
(a) Xerophytes
(b) Halophytes
(c) Heliophytes
(d) Hydrophytes
Answer
Answer: (b) Halophytes
Question 12.
Avicennia, Rhizophora andAtriplex are:
(a) Xerophytes
(b) Halophytes
(c) Hydrophytes
(d) Mesophytes
Answer
Answer: (b) Halophytes
Question 13.
Maximum amounts of humus occurs on:
(a) In lower most layer
(b) In upper layer
(c) In Middle layer
(d) Same everywhere
Answer
Answer: (b) In upper layer
Question 14.
In which one of the following habitats, does the diurnal temperature of soil surface veiw most?
(a) Shrub land
(b) Forest
(c) Desert
(d) Grassland
Answer
Answer: (c) Desert
Question 15.
Mycorrhiza is an example to:
(a) Decomposers
(b) Endoparasitism
(c) Symbiotic relationship
(d) Ectoparasitism
Answer
Answer: (c) Symbiotic relationship
