MANOJ KUMAR (SHELFORD)

Sunday, February 3, 2013

C.B.S.E. SA-II SCIENCE REVISION QUESTION PAPER


Shelford Tutorials
      Contact: manoj.kumar.mans@gmail.com website: www.mkshelford.blogspot.com  


Download in .Pdf format

1.       Draw electron dot structure of H2.
2.      What is the criteria for the arrangement of elements in the modern periodic table?
3.      Budding is one of the mode of reproduction in yeasts. [true/false]
4.    
The germ cells of human contains 23 pairs of chromosomes. [true/false]
5.      Who postulated the hypothesis -  ‘evolution takes place due to natural selection’
6.     What do you mean by acquired traits?
7.      Define focal length of a spherical mirror.
8.      What is Fovea centralis?
9.     Name one gas responsible for acid rain.

10.  What are two properties of carbon which lead to the huge amount of carbon compounds we see around us? 11. What do you mean by “Law of octaves”?
12.   Differentiate between atomic mass and atomic number.
13.   How does the creation of variations in a species promote survival?
14.  Give the phenotypic and genotypic ratio of a monohybrid cross.
15.  
Why are the small numbers of surviving tigers a cause of worry from the point of view of genetics?
16.  What is Myopia? Suggest the corrective measures for it.
17.   Why is colour of sky blue?
18.   What is law of reversibility of light?
19.  What will be the formula and electron dot structure of cyclopentane?
20. (a) What were the limitations of Döbereiner’s classification?
(b) What were the limitations of Newlands’ Law of Octaves?
21.   How is the sex of the child determined in human beings?
22.  Describe the formation of rainbow with diagram?
23.  A convex mirror used for rear-view on an automobile has a radius of curvature of 3.00 m. If a bus is located at 5.00 m from this mirror, find the position, nature and size of the image.
24. An object is placed between the focal length and radius of curvature of a concave mirror. Draw a ray diagram to show the formation of image and right the characteristics of the image formed.
25.  Ethanol, commonly called as alcohol is an excellent solvent, is used in medicines and is an important chemical compound involved in synthesis of many chemical compounds. However in spite of its benefits to man, its impact on social behaviour has always been questioned. Media has often show abnormal behaviour of people while drunk. It is considered as a curse in the lives of those who are addicted to alcohol – ‘Alcoholic’ people are not only lowering their metabolism and affecting Central Nervous System, they are also a threat to the lives of others. Anger and rude behaviour are some of its ill effects.
(i)   Comment on the statement ‘Should production of alcohol should be banned’, give three valid reasons to justify.
(ii)                        As a student what initiative would you take in the common concern of ‘Save Life, Do not Drink’. Give two suggestions.
Or
A 2.0 cm tall object is placed perpendicular to the principal axis of a concave lens of focal length 10 cm. The distance of the object from the mirror is 15 cm. Find the nature, position and size of the image formed. Represent the situation with the help of a ray diagram.
26. Draw a well labeled diagram of human eye. What is power of accommodation?
Or
Make a diagram to show how hypermetropia is corrected. The near point of a hypermetropic eye is 1 m. What is the power of the lens required to correct this defect? Assume that the near point of the normal eye is 25 cm.
27.  Draw the electron dot structures of -- Cyclopentane, methane, S8, N2.
Or
Write the history of development of periodic table in brief.

Markings:  question no. 1 – 9 contains 1 mark each [1x9 = 9] Question no. 11 – 18 contains  2 marks each[2 x 9 = 18]
Question no. 19 – 24 contains 3 marks  each [3 x 6 = 18]
Question no. 25 – 25 contains 5 marks each [5 x 3 = 15]

Total = 9 + 18 + 18 + 15 = 70 marks 

No comments:

Post a Comment

Blog Archive

Labels

2012 4TH LARVAL AND PUPAL STAGES. manoj kumar adaptations ADHATODA VASICA agarose agarose gel electrophoresis. agaros gel electrophoresis theory allergic reactions allergy amino acids anopheles ANSWER KEYS CSIR antheraea mylitta ANTI-HEMOLYTIC anti-typhoid antibacterial antibody anurans aquatic aquatic mammals arthropoda autotrophs BACTERIAL DISEASES BAT BEHAVIOUR benedict reagent benedict's reagent benedict's test benedicts reagent biochemistry bioscan biotechnology BIRDS bis bizzare phenomena blood blood sucking blood sucking bugs bruce effect bugs carbohydrate carbon dioxide CARNIVORUS. CAT CBSE CBSE 2014 CBSE EXAM CBSE SEMESTER II SCIENCE cbsex census 2011 centepede central board of secondary education chapter chapter 2 chapter2 class class 6 CLASS 7 class x class6 CLASS7 classical genetics CLASSIFICATION classification of amino acids cloning vectors COMMON DISEASES conference india CSIR WEB LINKS cuscuta dav dempster department of zoology Digestive System DNA RECOMBINANT TECHNOLOGY DOG domestic domestic levels. india DOWNLOAD NET ANSWER KEYS DOWNLOAD NET QUESTION PAPERS drury haemocytes drury hemocytes ecology ecoscan electrophoresis elements of innate immune system energy entomology environmental biology. exam extraction farmers fat father female anopheles fertilisers fine structure of antibody FMD food food chain FOOT AND MOUTH DISEASE Franz frog vocal FUNCTIONS fut content analysis GE02 gel genetic engineering genetics giardia giardiasis glucose test gorakhpur conference 2013 gram stain harmony - 2013 harmony 2-13 HARMONY 2014 harmony-2013 harmony2013 hemiptera heteroptera heterotrophs house centipede hypersensitivity immune system immunology in in plants India inheritance innate inportance INSECT ENDOCRINOLOGY isotypes Jhakrhand kwashiorkor lamblia larval stage law of minimum leibig levels limiting factors M. P. SINHA M. P. SINHA. malaria malarial malnutrition mammals mammals. manoj kumar manoj kumar shelford manoj kumar zoology manoj kumar zoology ranchi marasmus MATING microbiology MINERAL CONTENTS minerals MODE OF ACTION OF RABIES VIRUSE molecular genetics Mp sinha national environmentalists association ncert nea NEA CONFERENCE nea conference 2013 NEST nutrition nutrition in NUTRITIVE VALUE origin and evolution of reptiles oxygen parasite PARENTAL CARE IN BIRDS pcr pharmacological photosynthesis physical barriers PHYTOCHEMICALS PLACENTA PLACENTA VERA plants plasmids plasmodium polyadenylation. polymerase chain reaction potable potable water precipitaion test pregnancy block proper growth protein protein energy malnutrition proteins PROTOZOAN DISEASE purification qpcr qualitative test RABIES RANCHI UNIVERSITY RANCHI. revesion test RHEOCIRUSE SA -b 1SCIENCE SA CBSE SCIENCE SA-II SCIENCE SAMPLE PAPER CLASS X saprotrophs science SCIENCE CBSE science class x Scoliodon Scoliodong ppt scutigera sex linked inheritance shelford significance of foood chain soxhlet soxhlet extraction soxhlet. soxlet extraction stanley cohen STUDIES ON ANTHERAEA MYLITTA DRURY HEMOCYTES DURING 3RD sucking sucking bugs Sukumar Dandapat summative assesment summative assesment - II summative assesment 2012 synce ten trap cropping TYPES TYPHOID UDAIPUR UMBILICAL CORD use of radioactive isotopes vectors VIRUS. VIRUSE vitamins VITEX NEGUNDO vocalisation in amphibia vocalization in amphibians Von water web