CPMT Sample Paper Biology
1. The collection of food pushed form pharynx into oesophagus is called
a) embolus
b) chyme
c) chyle
d) bolus e) chylomicron
Ans (d)
2. 2, 4-D is a synthetic
a) auxin
b) gibberellin
c) cytokinin
d) Zeatin
Ans (a)
3. The secondary pollutant among the following is
a) DDT
b) BHC
c) CO
d) PAN
Ans (D)
4. In a double stranded B-DNA, the adenine form 18%, what is the expected percentage of guanine in the DNA molecule
a) 18%
b) 36%
c) 32%
d) 64%
Ans (C)
5. The process by which milk and milk products are made germ free (from harmful bacteria)
(a) sterilization
(b) pasteurization
(c) dehydration
(d) metachromasis
Ans (B)
6. Prions can cause the disease like
(a) variola
(b) varicella
(c) tetanus
(d) scrapie
Ans (D)
7. Haemocoel is present in
(a) scolapendra
(b) earthworm
(c) hydra
(d) Neries
Ans (A)
8.Example for osmotrophs
(a) fungi
(b) bacteria
(c) lichen
(d) both a & b
Ans (d)
9. The enteric group of bacteria include
(a) obligate aerobes
(b) facultative aerobes
(c) obligative anaerobes
(d) facultative anaerobes
Ans (b)
10. During mitosis, nuclear membrane disappears at
(a) early prophase
(b) late prophase
(c) metaphase
(d) anaphase Ans (b) 11. Synapsis is a characteristic of
(a) leptotene
(b) zygotene
(c) pachytene
(d) diplotene
Ans (b)
12. Longest phase in inter-phase is(a) G2
(b) S
(c) G1
(d) prophase Ans (c) 13. Water is a reagent in photosyntheis and product in
(a) respiration
(b) transpiration
(c) guttation
(d) all of these
Ans (d)
14. Minamatta disease was due to(a) mercury
(b) cadmium
(c) silver
(d) gold
Ans (a)
15.Tetse fly is the vector of the disease(a) Typhoid
(b) Kalaazar
(c) Gambia fever
(d) Pneumonia
Ans (c)
16. Body of leech is metamerically divided into
(a) 30 segment
(b) 33 segment
(c) 44 segment
(d) 22 segment
Ans (b)
17. Testis in ascaris is-
(a) paired
(b) single
(c) numerous
(d) two pairs
Ans (a)
18. Digestive system is absent in
(a) ascaris
(b) meagascolex
(c) taenia
(d) periplanata
Ans (c)
19. In obelia sexual generation is alternated with asexual generation, this phenomenon is called
(a) alternation of generation
(b) metagenesis
(c) metamorphosis
(d) plastochronic
Ans (b)
20.Respiration is sponges
(a) aerobic
(b) anaerobic
(c) obligate anaerobes
(d) facultative anaerobes
Ans (a)
21. Diatoms float due to the presence of
(a) storage lipids
(b) air vacuoles
(c) flagella
(d) cillia
Ans (a)
22. Depth is measured in a unit called
(a) meter
(b) fathom
(c) feet
(d) kilometer
Ans (b)
23. The unicellular and primarily aquatic eukaryotes are included in the kingdom
(a) monera
(b) protista
(c) protozoa
(d) parazoa
Ans (b)
24. Various source of industrial pollution is given, choose the correct order
Chemicals (pollutants) Process 1. chlorides, Various metals, sulphuric acid a. mining
2. tertiary ammonium compounds, alkalies b. soap and detergent
3. bleaching liquors c paper and pulp
(a) 1 -C 2-B 3-A
(b) 1-A 2-B 3-C
(c) 1-B 2-C 3-A
(d) 1-A 2-C 3-B
Ans (b)
25. Constantly changing the shape is referred to be
(a) pleiotrophic
(b) pleiomorphic
(c) actinomorphic
(d) chasmogamous
Ans (b)
26. Paramylon is the reserve food of paramoecium chemically it is
(a) protein
(b) oil
(c) carbohydrate similar to starch
(d) phenol
Ans (c)
27. The kingdom protoctist is diverse collection of
(a) virus
(b) prokaryotic organisms
(c) eukaryotic organism not included in other kingdoms
(d) all of these
Ans (c) It contains all unicellular eukaryotes and their direct multi-cellular descendants
28. Epulopiscium fishelsoni is a
(a) bacterium
(b) virus
(c) chlamydieae
(d) mycoplasma
Ans (a) A cigar shaped bacterium that lives in the intestinal tract of red sea surgeon fish, It has an size of 80 um wide and 600 um length, an exception
29. The statement true is
1) some fishes, amphibians and reptiles reproduce only by parthenogenesis
2) Whiptail lizards (cnemidophorus uniparens) are sexless
3) an alternation of asexual and sexual phases, occurs in the life cycle of most aphids (small insects which feed plant soup; greenfly are one type of aphid)
(a) 1, 2, are true
(b) only 1 true
(c) 1,2, 3 are true
(d) only 2 true
Ans (C)
30. An instrument used in connection with respiration
(a) spiro meter
(b) auxanometer
(c) anemometer
(d) dialiser
Ans (a)
31. Cyan bacteria do not reproduce by
(a) binany fission
(b) fragmentation
(c) conjugation
(d) budding
Ans (c)
32. When the cell are placed in hypotonic solution water flows into the cell by process of
(a) osmosis
(b) exomosis
(c) endosmosis
(d) imbibitions
Ans (c)
33. In mitochondria rich amount of enzymes and carriers are present on
(a) outer membrane
(b) inner membrane
(c) matrix (d) inter-membrane space
Ans (b)
34. Smaller ribosome is seen in
(a) cytoplasm of eukaryotes
(b) stroma of chloroplasts
(c) the matrix of mitochondria
(d) b & c
Ans (d)
35. Net gain of ATP in glycolysis
(a) 4 ATP
(b) 2 ATP
(c) 3 ATP
(d) 1 ATP
Ans (b)
36. The process by which milk and milk products are made germ free (from harmful bacteria)
(a) sterilization
(b) pasteurization
(c) dehydration
(d) metachromasis
Ans (b)
37. Cell apparently recognize one another on the basis of
(a) glycoproteins
(b) glycolipids
(c) glycoproteins & glycolipids
(d) lipoprotein
Ans (c)
38. Mucilages are polysaccharides formed from
(a) galactose and mannose
(b) glucose and chitin
(c) galactose and fructose
(d) glucose and chitin
Ans (a)
39. Among the natural materials, the fibre containing large amount of cellulose is
(a) jute
(b) coconut
(c) flax
(d) cotton
Ans (d) it contains 90% of cellulose
40. The most common pigment in tomato is
(a) carotene
(b) xanthophylls
(c) phycoerythrin
(d) lycopene
Ans (d)
41.Arginine and Lysin are amino acids and their nature is
(a) acidic
(b) basic
(c) arginine acidic and lysin basic
(d) arginine basic and Lysin acidic
Ans (b)
42. Plants and animals are coming under the group called organism, many characters are common to both, at the same time many characters are different. The structures normally common to plants and animals include
(a) cell wall
(b) plastid
(c) centriole
(d) cell membranes
Ans (d)
43. Steward conducted his experiment in
(a) xylem tissue of carrot root
(b) phloem tissue of carrot root
(c) xylem tissue of cabbage root
(d) phloem tissue of beet root
Ans (b)
44. Movement of solid parts with respect to one another is called
(a) catastrophism
(b) diastrophism
(c) formation
(d) pedalogy
Ans (b)
45. Finger printing, genetic engineering, gene manipulation are modern branches of biology, a famous institute in India doing all these types of research work is
(a) IRRI
(b) NEERI
(c) CCMB
(d) CAZRI
Ans (c) centre for cellular and molecular biology located at Hyderabad
46. w. B Canon was famous in connection with
(a) pollution
(b) homeostasis
(c) pathology
(d) microbiology
Ans (b)
47.Match the following
column A column B
1. Hornbill A. Worm eater
2. Spoonbill B. Snail eater
3. Sand piper C. Aquatic vegetable eater
4. Duck D. fruit eater
5. Parrot E. Fruit and nut eater (
a) 1 -C 2-A 3-B 4-D 5-E
(b) 1-D 2-C 3-A 4-B 5-E
(c) 1-B 2-A 3-C 4-E 5-D
(d) 1-A 2-C 3-D 4-E 5-B
(e) 1-E 2-B 3-D 4-A 5-C
Ans (b)
48. The correct statement is
(1) ophrys muscifera belong to the family orchidaceae
(2) limnophila hetrophylla is seen in water
(3) the flowers of ophrys resembles the males of certain species of wasp
(a) 1 & 2
(b) 2 & 3
(c) 1 &3
(d) 1,2,3
Ans (a) the flowers resembles the females of a certain species of wasp
49.Presumptions about natural phenomenon are termed
(a) telepathy
(b) teleology
(c) psychology
(d) psychiatry (
Ans (b)
50. The chemical used to stain mitochondria
(a) eosin
(b) janus green
(c) saffranin
(d) alizarin
Ans (b)
upcpmt model question paper 2008
CPMT Sample Paper Biology
1. The tusks of elephant are modified form of
(a) Canines (b) Incisors (c) Pre molars (d) Snout
2. Fluoride pollution mainly affects
(a) Teeth (b) Kidney (c) Heart (d) Brain
3. Hormones like thyroxine, adrenaline and melanin are formed from
(a) Tryptophan (b) Tyrosine (c) Proline (d) Glycine
4. Study of ultra-microscopic structure and interpretation of
biological events in terms of physico-chemical aspects is known
as
(a) Biochemistry (b) Cytology
(c) Radiation Biology (d) Molecular Biology
5. How many meiotic divisions are required to form 100 maize
grains?
(a) 50 (b) 125 (c) 25 (d) 100
6. Which is not a polysaccharide?
(a) Mannan (b) Aramylum (c) Sphingosine (d) Peptidoglycan
7. Vestigeal organ in python
(a) Eyes (b) Hind limbs (c) Fore limbs (d) Nostrils
8. Convergent evolution is illustrated by
(a) Dog fish and Whale (b) Rat and Dog
(c) Bacterium and Protozoan (d) Star fish and Cuttle fish
9. Cniodo blast are commonly found in
(a) Pelecipoda (b) Cnidaria (c) Heliozoa (d) Ctenophora
10. Kangaroo is a native of
(a) Africa (b) Australia (c) Mexico (d) Austria
11. Bundle of his is a network of
(a) Muscle fibres distributed throughout the heart walls
(b) Muscle fibres found only in the ventricle wall
(c) Nerve fibres distributed in ventricles
(d) Nerve fibres found throughout the heart
12. Which of the following sets belong to the same class
(a) Hydra, Jellyfish, cray fish (b) Bat, Pigeon, Whale
(c) Spider, Scorpion, Centipede (d) Whale, Otter, Kangaroo
13. Dinoflagellate are coming under
(a) Euglenophyta (b) Rhodophyta
(c) Pyrophyta (d) Chrysophyta
14. Which is the common character between all the mammals
(a) They are viviparous (b) They are herbivores
(c) They are carnivores (d) They have 7 cervical vertebrace
15. Protein part of enzyme is known as
(a) Apoenzyme (b) Co-enzyme (c) Co-factor (d) Holoenzyme
16. Nucleous was discovered by
(a) Fontana (b) Porter (c) Huxley (d) Robert Brown
17. Which of the following has no segmentation
(a) Hydra (b) Earth worm (c) Centipede (d) Cockroach
18. Trematodes include
(a) Planaria (b) Tape worm (c) Flukes (d) All the above
19. Which one of the following sequences was proposed by Darwin
and Wallace for organic evolution?
(a) Variations, natural selection, overproduction, constancy of
population size
(b) Overproduction, constancy of population size, variations,
natural selection
(c) Overproduction, variations, constancy of population size,
natural selection
(d) Variations, constancy of population size, overproduction,
natural selection
20. One of the following is not a true fish
(a) Dog fish (b) Pipe fish (c) Silver fish (d) Saw fish
21. Food capturing cell present in ctenophora
(a) Lasso cell (b) Cnidobalst (c) Pseudopodia (d) Filopodia
22. The basic unit of taxonomy is
(a) Genus (b) Species (c) Order (d) Class
23. Which mineral is essential for the activity of the enzyme nitrate
reductase?
(a) Molybdenum (b) Copper (c) Iron (d) Magnesium
24. The bonds that stabilize the coils and folds of three dimensional
form of protein are
(a) Hydrogen bonds (b) covalent disulphide binds
(c) ionic bonds (d) All the above
25. Name of Fritz Lipman is associated with
(a) DNA (b) ATP (c) Virus (d) Mitochondria
26. The adult are radically symmetrical but larva exhibit bilateral
symmetry in
(a) Echinodermata (b) Cephalochordata
(c) Hemichordata (d) Mollusk
27. Viruses are no more 'alive' than isolated chromosomes because
(a) both require the environment of a cell to replicate
(b) They both need food molecules
(c) They require both RNA and DNA
(d) They both require oxygen for respiration
28. Test tube baby means a baby born when
(a) It is developed in a test tube
(b) It is developed through tissue culture method
(c) The ovum is fertilized externally and thereafter implanted in
the uterus
(d) It develops from a non-fertilized egg.
29. Relationship of alge and fungi in a lichen where fungus makes
an upper role
(a) Amensalism (b) Commensalisms (c) Heliotism (d) Symbiosis
30. Birds and bats are good fliers. The bats differ from birds in
having
(a) Four chambered heart (b) Diaphragm
(c) Small brain (d) Wings
31. Which group of vertebrates comprises the highest number of
endangered species?
(a) Mammals (b) Birds (c) Fishes (d) Reptiles
32. Which one of the following is a coelenterate
(a) Sea urchin (b) Sea cucumber (c) Sea horse (d) Sea pen
33. The cell organelle connected with photorespiration is
(a) Peroxisomes (b) Glyoxysomes
(c) Sphaerosomes (d) Microsomes
34. Portuguese man of war (Physalia) is a
(a) Soldier of world war
(b) Sponge
(c) Solitary polymorphic coelenterate
(d) A polymorphic colonial coelenterate
35. Most appropriate term for life cycle of obelia
(a) Alternation of generation (b) Metagenesis
(c) Metamorphosis (d) Neoteny
36. Given below are four matching of an animal and its kind of
respiratory organ
(1) Silver fish - Trachea
(2) Scorpion - Book lung
(3) Sea squirt - Pharyngeal gills
(4) Dolphin - Skin
The correct matching are
(a) 1 & 2 (b) 2 & 4 (c) 3 & 4 (d) 1, 2 & 3
37. A rabbit shows resemblance with frog in
(a) Renal portal system (b) Dorsal tubular nerve cord
(c) Nucleated RBC (d) Oval RBC
38. During which phase of the cell cycle does the centrosome
replicate?
(a) Metaphase (b) Interphase (c) Telophase (d) Prophase
39. Digestive enzymes are generally found in
(a) Iysosome (b) Ribosomes (c) Peroxisome (d) Mitochondria
40. Proglottid is the segment of
(a) Leech (b) Flat worm (c) Taenia d) Neries
41. Cellular totipotency is demonstrated by
(a) All eukaryotic cells (b) Only bacterial cells
(c) Only gymnosperm cells (d) All plant cells
42. Which is the characteristic of phylum protozoa
(a) Cell membrane (b) Binary fission
(c) Contractile vacuole (d) Pseudopodia
43. Which one of the following is absent in autotrophic prokaryotic
cells?
(a) Chloroplast (b) Photosynthetic pigment
(c) Cytoplasm (d) Cell wall
44. The protein that binds te larger subunit of ribosome to the
endoplasmic reticulum is
(a) Ricin (b) Ribophorin (c) Ionophore (d) Ribozyme
45. Chromosomes with equal arms are said to be
(a) Telocentric (b) Metacentric
(c) Acrocentric (d) Sub-metacentric
46. The jungle edge is tangle of sun loving woody climbers called
(a) Twiners (b) Savannah (c) Pampas (d) Lianas
47. An animal with a haemocoel is
(a) Earthworm (b) Hydra (c) Sponge (d) Centiped
48. The resolving power of human eye is
(a) 50 microns (b) 10 microns (c) 100 microns (d) 1000 microns
49. Haemoglobin is a
(a) fibrous protein (b) chromoprotein
(c) phosphoprotein (d) nucleoprotein
50. Crossing over occurs during
(a) Diakinesis (b) Zygotene (c) Pachytene (d) Diplotene
Answers
1 B 11 B 21 A 31 A 41 D
2 A 12 D 22 B 32 D 42 D
3 B 13 C 23 A 33 A 43 A
4 D 14 D 24 D 34 D 44 B
5 B 15 A 25 B 35 B 45 B
6 C 16 A 26 A 36 C 46 D
7 B 17 A 27 A 37 B 47 D
8 A 18 C 28 C 38 D 48 D
9 B 19 C 29 C 39 A 49 B
10 B 20 C 30 B 40 C 50 C
CPMT Sample Paper Biology
1. A cartilaginous fish with operculum considered as connecting link
between bony fishes and cartilage fishes
(a) Protopterus (b) Latimeria (c) Chimaera (d) Sphyrna
2. Maximum noise limit in the silence zone near hospitals at night is
(a) 80dB (b) 70dB (c) 75dB (d) 40dB
3. ........ are examples for group transferring (transferase)
enzyme
(a) Hexokinase, triose phosphate isomerase, cytochrome
oxidase
(b) Hexokinase, Glutamate Pyruvate amino transferase
(c) GOGAT, Amylase
(d) Aldolase, enolase, ferredoxin
4. Paleontology is the study of
(a) Primates (b) Birds (c) Fossils (d) Bones
5. Louis Pasteur is known for
(a) View for Biogenesis
(b) Spontaneous generation
(c) Use and disuse of organs
(d) Method of sterilization and germ theory of disease
6. Vampire bats are
(a) Frugivorous (b) Sanguivorous
(c) Insectivorous (d) Omnivorous
7. The total number of nitrogen bases, deoxy ribose sugars and
phosphate present in a double stranded DNA are 16, 16 & 14
respectively. What is the length of DNA?
(a) 10.88nm (b) 2.72nm (c) 5.44nm (d) 2.38nm
8. Study of tissue is
(a) Anatomy (b) Physiology (c) Histology (d) Ecology
9. 'John Snow' is associated with
(a) Parasitology (b) Immunology (c) Pharmacology (d) Genetics
10. In termites, sterile castes are
(a) workers (b) soldiers (c) nasutes (d) all the above
11. The most important ozone depleting substance (ODS) in the
stratosphere is
(a) SO2 (b) Methane (c) CFC (d) PAN
12. Match the following
A B
a) Club Fungi 1) Fusarium
b) Sac fungi 2) Zygomycetes
c) Conjugation 3) Basidia
d) Fungi imperfecti 4) Apothecium
(a) a1, b2, c3, d4 (b) a2, b1, c4, d3
(c) a3, b4, c2, d1 (d) a4, b3, c2, d1
13. Ornithology is concerned with the study of
(a) Fishes (b) Birds (c) Animal fossils (d) Reptiles
14. Reducing agent or reductant in anaerobis respiration process is
(a) Triose phosphate (b) Pyruvic acid
(c) NADH (d) 1,3 diphosphoglyceric acid
15. One of the following is a connecting link between annelida and
mollusca
(a) neomenia (b) peripatus (c) neopilina (d) ctenoplana
16. The term 'Protista' was given by
(a) E. Haeckel (b) John Ray (c) Linnaeus (d) G. Cuvier
17. In plants, during photosynthesis
(a) Entropy increases, free energy increases, total energy
increases
(b) Entropy decreases, free energy decreases, total energy
increases
(c) Entropy decreases, free energy increases, total energy
increases
(d) Entropy increases, free energy increases, total energy
decreases
18. Linnaeus had the credit for
(a) Discovery of blood circulation (b) Theory of biogenesis
(c) Discovery of microscope (d) Binomial nomenclature
19. Study of lizards is
(a) Serpentology (b) Herpetology (c) Serology (d) Ornithology
20. Chromosomes labeled with A/a, B/b, C/c, D/d, E/e where slash
line separates one chromosome from its homologue. How many
different kind of meiotic products can this individual produce?
(a) 32 (b) 16 (c) 8 (d) 4
21. Branch of Zoology dealing with the study of fishes is known as
(a) Herpatology (b) Ichthyology (c) Saurology (d) Arthrology
22. The hemichordate Balanoglossus has its larva called
(a) Bipinnaria (b) Veliger (c) Tornaria (d) Ammocoete
23. For Gycosidation and Glycosylation lipids and proteins are
supplied by
(a) Golgi (b) ER (c) Mitochondria (d) Chloroplast
24. Study of human being is known as
(a) Antropoidy (b) Anthropology
(c) Humanology (d) Homonidology
25. The book 'The Origin of life on Earth' was written by
(a) Charles Darwin (b) Stanley Loyld Miller
(c) A.I. Oparin (d) S.L. Miller and Urey
26. One of the following made a commitment to reduce green
house gases
(a) UNCED (b) Earth summit at Rio De Janiero
(c) Kyoto Protocol (d) Montreal Protocol
27. Which among the following combinations are haploid?
(a) Endosperm of gymnoserm, protonema, prothallus, perisperm
(b) Protonema, prothallus, perisprem, nucellus leaves of funaria
(c) Endosperm of gymnosprem, protonema, prothallus, capsule
of funaria
(d) Endosperm of gymnosperm, protonema, prothallus, Ricca
vegetative thallus
28. Study of behaviour of animals is known as
(a) Ecology (b) Sociology (c) Ethology (d) Anthropology
29. Australian lung fish is
(a) lepidosiren (b) neoceratodes
(c) crypto branchus (d) protopterus
30. The living agnatha are included under
(a) Ostracodermi (b) Placodermi
(c) Cyclostomata (d) Holocephali
31. World habitat day is on
(a) 3rd October (b) 4th October
(c) 21st March (d) 5th June
32. Study of growing old is
(a) Genology (b) Genecology (c) Gerontology (d) Gynecology
33. Blood groups were discovered by
(a) Landsteiner (b) Altmann (c) Ronald Ross (d) Losch
34. The salamander popularly called 'congo eel' is
(a) Amblystoma (b) Necturus (c) Amphiuma (d) Siren
35. The agroforestry method of planting herbs and shrubs between
woody trees like sal and teaks is called
(a) Jhum cultivation (b) Taungya system
(c) Urban forestry (d) Social forestry
36. Study of animals that live and subsist on other animals is
(a) Pathology (b) Ecology (c) Parasitology (d) Taxonomy
37. Two enzymes common in Glycosis & Calvin cycle are
(a) Aldolase & Transaminase
(b) Aldolase & Trios phosphate isomerase
(c) Aldolase & PEP carboxylase
(d) Phospho hexo isomerase & Enolase
38. The Ethnology is the study of
(a) Man kind behaviour (b) Past life of organisms
(c) Conditions of animals (d) Joints
39. Which one of the following is a free living nitrogen fixing
bacteria
(a) Nitrosomonas (b) Nitrocystis (c) Rhizobuim (d) Clodtridium
40. Sedentary echinoderms are included under
(a) asteroidea (b) ophiuroidea (c) holothuroidea (d) crinoidea
41. Cockroach and Grasshopper are
(a) ametabolous (b) paurometabolous
(c) hemimetabolous (d) holometabolous
42. Term 'Biology' was introduced by
(a) Aristotle (b) Lamarck (c) Darwin (d) Linnaeus
43. Study of nuclear cytology is
(a) Neurology (b) Mycology (c) Rhinology (d) Karyology
44. Choose the organophosphate pesticide
(a) Aldrin (b) Endrin (c) Parathion (d) BHC
45. Study of snakes is called
(a) Ichthyology (b) Serpentology
(c) Herpetology (d) Entomology
46. AbCDeFgh are the gight genes located on 5th chromosome
(paternal). Its homologue (maternal) may have the gene
sequence
(a) abcdefgh (b) aBcdEfGH (c) AbCdEfGh (d) any of the above
47. Aquatic birds like penguin are included under the super order
called
(a) Ratitae (b) Carinatae (c) Odontognathae (d) Impennae
48. The term 'Cell' was given by
(a) Robert Hooke (b) Weisemann (c) Darwin (d) Cuvier
49. Choose the odd toed hoofed mammal
(a) Hippopotamus (b) Camel (c) Giraffe (d) Rhinoceros
50. Stink glands are seen in
(a) Buthus (b) Julus (c) Scolopendra (d) Araenia
Answers
1 C 11 C 21 B 31 B 41 B
2 D 12 C 22 C 32 C 42 B
3 B 13 B 23 B 33 A 43 D
4 C 14 C 24 B 34 C 44 C
5 D 15 C 25 C 35 B 45 B
6 B 16 A 26 C 36 C 46 D
7 D 17 C 27 D 37 B 47 D
8 C 18 D 28 C 38 A 48 A
9 C 19 B 29 B 39 D 49 D
10 D 20 B 30 C 40 D 50 B
