Showing posts with label GS- Science Pre. Show all posts
Showing posts with label GS- Science Pre. Show all posts

Monday, July 22, 2013

EVERYDAY SCIENCE : BIOLOGY -NO.1

                     EVERYDAY SCIENCE : BIOLOGY -NO.1
1. Green plants carry on respiration
A. only during the day                      B. only when photosynthesis is going on
C. only at night                                 D. during both day and night

2. Two elements needed for the production of chlorophyll are
A. Calcium and potassium               B. magnesium and iron
C. phosphorus and sulphur               D. chlorine and copper

3. During respiration green plants take in
A. water      B. oxygen     C. oxygen and water     D. carbon dioxide

4. Speed and accuracy are the main advantages of developing
A. instincts      B. tropisms     C. simple reflexes      D. habits

5. In the dark a green plant excretes
A. oxygen      B. carbon dioxide      C. hydrogen      D. None of the above

6. The normal temperature of the body is
A. 96.7°F         B. 97.8°F       C. 98.6°F       D. 97.6°F

7. The Wassermann test is used to determine whether a person has contracted
A. tuberculosis         B. diphtheria           C. poliomyelitis          D. syphilis

8. Blood in the pulmonary artery
A. lacks carbon dioxide          B. contains nitrogen      C. lacks oxygen        D.ontains all three gases

9. The thyroid gland
A. is known as the gland of emergency             B. controls the production of ACTH
C. stimulates the liver to store glycogen           D. regulates the rate of metabolism

10. An example of a habit forming narcotic is
A. heroin         B. quinine      C. penicillin        D. cortisone

11. The light sensitive zone at the rear of the eye is called
A. Cornea       B. Retina       C. Eyeball         D. None of the above

12. If nerves to the heart are severed, the heart will
A. beat regularly    B. cease functioning      C. beat faster     D. beat erratically

13. A plant growth substance produced by a fungus is
A. molybdenum     B. auxon     C. auxin     D. gibberellin

14. Blood is transported to the kidney from the dorsal aorta by the
A. renal vein     B. renal artery      C. glomerulus     D. arterioles

15. A gland known as the gland of emergency is the
A. adrenal     B. thyroid     C. pituitary    D. parathyroid

16. Which reagent should be used in the urine test for diabetes?
A. Ammonia     B. Nitric acid     C. Benedict’s solution      D. Iodine

17. The lungs are enclosed in a set of double membrane known as
A. peritoneum       B. pleural sac        C. pericardium      D. periosteum

18. Urea is removed form the blood by the
A. kidneys       B. lungs       C. large intestine      D. spleen

19. Leukaemia is a type of cancer in which there is an abnormal increase in the number of
A. red blood cells          B. white blood cells     C. bone cells     D. platelets

20. Soil erosion is caused by
A. terracing        B. rotation of crops       C. overgrazing        D. contour ploughing

21. The adrenal gland is located next to the
A. brain       B. kidney       C. neck       D. bladder

22. Deficiency of proteins in the human body can lead to
A. anaemia        B. night blindness        C. scurvy        D. None of these

23. Penicillin was discovered by
A. Alexander Fleming                 B. Robert Koch
C. Selman Waksman                    D. Paul Ehlrich

24. Cancer may be cured by all of the following methods except
A. Immunisation       B. Surgery        C. Radium treatment       D. X-ray treatment

25. A useful cover crop is
A. Rice       B. Wheat        C. Corn       D. Bermuda grass

26. A disease that may be inherited is
A. pellagra       B. trichinosis        C. malaria         D. hemophilia

27. Which nutrient is not able to provide energy for cell use?
A. Carbohydrates        B. Water       C. Fats      D. Proteins

28. The type of cell in which an axon is contained is
A. bone       B. dermis          C. neuron        D. epidermis

29. There is no pure race in the human species today because of
A. mutation          B. inbreeding          C. isolation        D. cross-breeding

30. The mammal embryo develops in the
A. ovary       B. umbilical cord       C. placenta      D. uterus

31. Which organ is not related to the function of excretion?
A.sweat gland       B. kidney         C. salivary gland        D. lung

32. All of the following reproduce by asexual reproduction except
A. horse         B. hydra           C. paramecium       D. geranium

33. A cactus is an example of a
A. saprophyte       B. mesophyte       C. xerophyte        D. hydrophyte

34. If the cerebellum of a pigeon were destroyed, the bird would not be able to
A. oxidise food          B. breathe       C. fly        D. digest food

35. The substance which forms a blood clot is present in the circulating blood in the form of
A. fibrinogen       B. fibrin       C. thrombin       D. thrombokinase

36. The normal internal temperature of the human body
A. is always the same                        B. usually decreases during daylight hours
C. varies within narrow limits           D. varies in a range of 6°C (11°F)

37. Vegetative propagation is a form of
A. sexual reproduction                 B. asexual reproduction
C. fertilisation                              D. conjugation

38. Which of the following is not an endocrine gland?
A. Adrenal B. Pancreas C. Thyroid D. Pituitary
39. The formation of blood cells is known as
A. haemopoiesis         B. haemogenesis         C. haematoma      D. hematology

40. The changing of nutrients into protoplasm is known as
A. Assimilation            B. Digestion         C. Absorption         D. Oxidation

41. The outer layer of skin is called
A. Ectoderm        B. Endoderm        C. Epidermis       D. Dermis

42. If a cell is reduced in size when placed in the solution, the solution is called
A. saturated        B. weak         C. hypotonic           D. hypertonic

43. Hereditary characters were named ‘genes’ by
A. George Mendel           B. Johanssen          C. Morgan          D. Watson

44. The nerve centre for sight is located in the
A. spinal cord        B. cerebrum        C. medula       D. cerebellum

45. Coronary heart disease is most often found in persons suffering from
A. high blood pressure              B. anaemia
C. low blood pressure               D. hemophilia

46. The left atrium of the human heart receives
A. blood from the venacava                 B. oxygenated blood
C. blood from the left ventricle            D. deoxygenated blood

47. Universal blood donors have blood type
A. A            B. B         C. O       D. AB

48. A toxin is a substance that
A. is produced by all the body cells              B. kills bacteria
C. is produced by white corpuscles              D. is produced by bacteria

49. As a person becomes older, his blood pressure generally
A. increases       B. remains the same        C. varies widely         D. decreases

50. The study of living things in relation to each other and their environment is known as
A. Endocrinology        B. Conservation      C. Eugenics      D. Ecology

51. Most important discovery in the field of biology in the present century is of
A. viruses       B. genes      C. sulpha drugs      D. antibiotics

52. Genetic material in the cell is
A. DNA                                            B. RNA
C. Neither DNA nor RNA                D. both DNA and RNA

53. Tea is a good stimulant due to the presence of
A. nicotine       B. caffeine       C. morphine       D. ephidrine

54. The pituitary gland is located in the
A. neck         B. pancreas         C. head          D. abdomen

55. An average adult has a blood volume of some
A. 3-4 litres          B. 4-5 litres         C. 5-6 litres          D. 6-7 litres

56. Who are more likely to get tapeworm infection?
A. Non-vegetarians        B. Adults         C. Children         D. Vegetarians

57. Green plants are the basis of life of
A. omnivorous animals                B. herbivorous animals
C. carnivorous animals                D. All of the above

58. The inner layer of skin is called the
A. Dermis               B. Cuticle         C. Epidermis         D. Papillae

59. A disease in which blood does not clot readily is
A. Haemophilia             B. Anoxia            C. Hydrophobia             D. Anaemia

60. The body is like an internal combustion machine in that it
A. releases blood in chemical reactions                  B. digests food
C. exhales carbon dioxide                                       D. enables us to do work

61. Nodules with nitrogen fixing bacteria are present in
A. gram                 B. maize            C. wheat            D. mustard

62. Largest flower in the world is that of
A. rafflesia            B. lotus         C. sunflower            D. cactus

63. Science has been able to prove that there are inborn racial differences of
A. skin colour        B. intelligence        C. musical ability         D. athletic skill

64. Insulin controls the metabolism of
A. proteins          B. hormones       C. carbohydrates       D. fats

65. Substances usually present in largest amount in ordinary food are
A. carbhydrates and proteins                 B. proteins and minerals
C. carbohydrates and vitamins               D. minerals and vitamins

66. Which of the following is not fruit?
A. Potato         B. Cucumber           C. Tomato        D. Pumpkin

67. According to a hypothesis, the first living organisms obtained energy directly from
A. organic molecules in the ocean              B. the sun
C. oxygen in the atmosphere                       D. carbon dioxide and water

68. The part of earth and its atmosphere which is inhabited by living beings is known as
A. Ecosphere           B. Hydrosphere             C. Biosphere           D. Atmosphere

69. The process of double fertilisation was discovered by
A. J.C.Bose             B. Leeuwenhock           C. Hofmeister             D. Nawaschin

70. In transfusions, the blood must be compatible not only in blood type but also in
A. Rh factor                                   B. number of red cells
C. number of white cells                D. race of donor and recipient

71. An electrocardiogram is used to detect malfunctioning of the
A. circulatory system                  B. nervous system
C. respiratory system                  D. digestive system

72. Which of the following is most likely to be used for exercise of certain musceles
A. laryngoscope         B. stereoscope         C. kaleidoscope         D. cryoscope

73. Much of the credit for developing the compound microscope is given to
A. Needham          B. Harvey           C. Van Leeuwenhoek              D. Redi

B. an artery C. a vein D. nerves

75. Plankton is composed of
A. fish             B. sharks          C. whales         D. microscopic life

76. The greatest number and widest variety of plants and animals would be found in
A. steppes          B. tropical rain forests           C. Tundras          D. deserts

77. Phosphorus deficiency hinders
A. cell division                       B. cambial activity and reduction of nitrates
C. normal growth                    D. chlorophyll formation

78. Which substance received widespread attention in investigations concerning diseases of
the heart and blood vessels?
A. Protein           B. Lipase          C. Glycerol           D. Cholesterol

79. Calcium metabolism is controlled chiefly by the
A. thyroid glands            B. adrenal glands          C. parathyroid glands              D. thymus glands

80. Which plant has the smallest flower
A. Wolfia              B. Delonix           C. Rosa           D. Raffesia

81. Insectivorous plants grow in the soil which is deficient in
A. phosphorus          B. nitrogen             C. water              D. calcium

82. The transfer of materials between organisms and the environment is known as a
A. synthesis         B. free gas           C. niche          D. cycle

83. Motive force of growth is
A. Osmotic pressure             B. Imbition pressure          C. Turgor pressure      D. All of these

84. Response of a plant to the relative lengths of light and dark periods is known as
A. Epinasty             B. Vernalisation             C. Photopenodis             D. Hyponasty

85. The food in onion is stored in the form of
A. sugar            B. cellulose           C. glucose             D. starch

86. Which hormone is often used to stimulate the heart?
A. Secretin              B. Auxin            C. Insulin            D. Adrenalin

87. Olive trees grow in
A. mediterranean type regions                B. temperate type regions
C. equatorial type regions                       D. tropical type regions

88. Physiology is mainly concerned with
A. activity of the body                   B. diseases of the body
C. growth of the body                    D. structure of the body

89. Coronary thrombosis refers to a blood clot in the circulatory system of the
A. abdomen             B. kidneys            C. heart          D. head

90. Which of the following pests is attached to wheat?
A. Bruches spy                       B. Pthorimia opercellella
C. Bryobia practiosa              D. None of these

91. Which of the following elements do proteins, fats, and carbohydrates have in common?
A. Sodium         B. Carbon         C. Nitrogen          D. Sulphur


92. Aquarium is
A. a health resort or hospital for convalescents
B. a container, either a pond or some form of tank, in which fish, reptiles and plants are kept
C. a machine showing motions and orbits of the planets
D. None of these

93. Which disease is caused by a bacterial genus in the milk?
A. Cholera B. Diphtheria C. Analgesia D. Typhoid

94. Anthropology is a term which applies to
A. the study of birds B. the study of birds
C. the science of man in relation to his life, society and environment
D. None of the above

95. The ductless glands secrete
A. hormones              B. enzymes             C. juice              D. proteins

96. Camels have greater adaptability to long periods of drought in hot deserts than other
animals because
A. They have a large hump where they can store water
B. Camaels can drink very fast, as much as 1/3 of their body weight
C. Their thick fur insulates their bodies against high external temperatures and reduces
water loss
D. Camels have a large rumen

97. Night soil when fresh contains about –––––% of nitrogen.
A. 0.3-0.4          B. 0.4-0.5        C. 0.5-0.6         D. 1.0-1.6

98. Which of the following are affected by AIDS?
1. Blood circulatory system        2. Immune system
3. Respiratory system                 4. Nervous system
A. 1, 2 and 3           B. 1, 3 and 4                C. 2, 3 and 4          D. 1, 2 and 4

99. Night soil when dry contains about ––––% of nitrogen.
A. 1-2          B. 2-3          C. 3-4          D. 4-5

100. Which of the following organisms cause cholera?
A. Protozoa           B. Virus           C. Bacillus         D. Cocci


ANSWERS
1. D         2. B        3. B         4. D         5. B            6. C             7. D           8. C
9. D        10. A      11. B       12. A        13. D         14. B           15. A         16. C
17. B       18. A     19. B       20. C         21. B         22. A           23. A         24. A
25. D       26. D     27. B       28. C        29. D         30. D            31. C         32. A
33. C       34. C     35. A       36. C        37. B         38. B             39. A        40. A
41. C      42. B      43. B        44. B        45. A         46. A            47. C        48. D
49. A      50. D      51. B       52. A        53. B         54. C             55. C       56. A
57. D      58. A      59. A       60. D        61. A         62. A            63. A        64. C
65. A     66. A      67. A       68. C         69. D         70. A            71. A        72. B
73. C     74. B      75. D       76. B         77. B         78. D            79. C         80. A
81. B      82. D      83. C       84. C         85. B         86. D            87. E        88. A
89. C      90. C      91. C        92. B         93. B        94. C            95. A        96. C
97. D      98. A      99. B       100. C

Thursday, August 9, 2012

Electronics and Computer

                            Electronics and Computer




No.
Question
Answer
01
The unit of frequency is
Hertz
02
The unit of resistance is
Ohm
03
The device which makes or breaks a circuit is
Switch
04
The path of an electric current is known as a
Circuit
05
Device which opposes the flow of electric current is known as
Resistor
06
Arc Lamp was invented by
C.F.Brush
07
Television was invented by
J.L.Baird
08
Transistor was invented by
J.Bardeen,W.Shockley and W.Brattain
09
The unit of wavelength of light is
Angstrom
10
A device which converts light into electricity is known as
Photo cell
11
Hertz was the first to discover
Radio waves
12
Marconi invented
Radio
13
In 1901,Marconi beamed a signal from Cornwall in England to
Newfoundland
14
Thomas Edison was an
American inventor
15
A glass tube with two electrodes is called a
Diode
16
Lee de Forest was an
American scientist
17
Lee de Forest discovered the
Triode
18
Radio and television transmit signals using
Electromagnetic waves
19
To turn pictures into electrical signals,television Cameras rely on
Photo-electric effect
20
Transistor was invented in the year
1948
21
The first electronic components invented were the
Thermionic valves
22
Microchip was invented in the year
1958
23
Microchip was invented by
Jack Kilby
24
The microchip invented first was also the first
Integrated circuit
25
Silicon and germanium are ideal examples of
Semi conductors
26
LED stands for
Light Emitting Diode
27
The first computer was invented in the year
1834
28
The first computer was invented by
Charles Babbage
29
The first computer invented was called
Analytical Engine
30
In the present day electronic machines,computers function as
Artificial brains
31
CAD means
Computer Aided Design
32
CPU stands for
Central Processing Unit
33
RAM stands for
Random Access Memory
34
J.J. Thomson was a
British physicist
35
In 1897,J.J.Thomson discovered
Electrons
36
A device used for increasing the strength of electric signal is called
Amplifier
37
The height of a wave is called
Amplitude
38
An electron carries a charge
Negative
39
In a transistor,a base is the
Filling in the semiconductor sandwich
40
The tube behind the screen in TVs and most computers is called
Cathode Ray Tube
41
The force which makes an electric current is called
Electromotive Force
42
Device used for measuring small amounts of electric current is called
Galvanometer
43
Sound too low to be heard by humans is called
Infrasound
44
VDU stands for
Visual Display Unit
45
One kilobyte is approximately
1000 bytes
46
DOS stands for
Disk Operating System
47
WORD STAR is a popular
Word processing programme
48
WORD STAR was developed by
Micro pro Company
49
PC stands for
Personal Computer
50
ALU stands for
Arithmetic Logic Unit
51
The VDU and Keyboard together form a
TERMINAL
52
The speed of the dot matrix printers is measured by CPS which stands for
characters per second
53
The speed of the line printers is measured by LPM which stands for
Lines per second
54
DBMS stands for
Database Management System
55
IBM is a famous computer company.IBM stands for
International Business Machines Corporation
56
ROM stands for
Read Only Memory
57
The actual machine of the computer is commonly known as
Hardware
58
The programs run on the computer are commonly known as
Software
59
All the output which is printed on paper is called
Hard Copy
60
The number of pixels on a computer screen determines a screes's
Resolution
61
A processor's speed is measured in
Megahertz
62
A software that assists the computer in performing instructions,is called as
system software
63
CAM stands for
Computer Aided Manufacturing
64
DPI stands for
Dots per Inch
65
DTP stands for
Desk Top Publishing
66
EPROM stands for
erasable and Programmable Read only Memory
67
A magnetic storage disk made out of a thin piece of plastic is called
Floppy Disk
68
A pictorial representation of the step by step sequence for solving a problem is known as a
Flow Chart
69
A measure of storage capacity equal to one thousand megabytes is one
Gigabyte
70
A variable whose value is accessible throughout the program is called
Global Variable
71
A huge,worldwide network of computers that communicate with each other,allowing global communications between users is known popularly known as
Internet
72
KB stands for
Kilobyte
73
LAN stands for
Local Area Network
74
A printer which uses light to transfer the image to paper is the
Laser Printer
75
Memory which retains all its contents even after the power is turned off is known as
Non-Volatile Memory
76
The result that is generated by the computer after processing the information provided to it is known as
Output
77
Electronic mail is more popularly known as
E-Mail
78
PILOT stands for
Programmed Inquiry Learning Or Teaching
79
PILOT was developed by
Doug Engelbardt
80
IQL stands for
Interactive Query Language
81
LOGO was developed by
Dr.seymour Papert
82
CAL stands for
Computer Assisted Learning
83
APT stands for
Automatically Programmed Tooling
84
`C'language was invented by
Dennis M.Ritchie
85
Modula-2 was developed by
Niklaus Wirth
86
Terminals that have their own memory are called
Smart terminals
87
The memory that needs electric power to sustain its contents is known as
Volatile Memory
88
MOS stands for
Metallic Oxide Semiconductors
89
Dvorak key board was designed by
August Dvorak
90
A simple device which functions as a simpler alternative to the keyboard is the
Mouse
91
Automatic drawing input device is called
Scanner
92
In the second generation computers,magnetic cores were used as
Main Memory Devices
93
LCD stands for
Liquid Crystal Display
94
RADAR stands for
Radio Detection and Ranging
95
RADAR works on the principle of
Echo
96
software-in-Hardware modules are called
Firmware
97
A device by which any microcomputer can use ordinary television set for producing output is called
RF modulator
98
EDSAC stands for
Electronic Delayed Storage Automatic Computer
99
EDVAC stands for
Electronic Discrete Variable Automatic Computer
100
EDSAC was developed in the year
1949
101
EDVAC was developed in the year
1952
102
ENIAC stands for
Electronic Numerical Integrator and Calculator
103
The most successful computing device in the ancient time was
Abacus
104
Use of some mechanism for the operation of a machine is known as
Automation
105
Radar contact with the moon was first made in
1945
106
Radar contact with Venus was first made in
1961
107
A system in which information is displayed on a television screen is known as
Video Text System
108
A modern means of communication in which the information is stored in a computer at a TV station is known as
Teletext
109
Global communication became possible by using
Satellites
110
Morse code was invented by
Samuel Morse
111
The code used in a teleprinter is the
Baudot Code
112
Teleprinter exchange is popularly known as
Telex
113
A device which converts sound waves into electrical waves is called
Microphone
114
AVC stands for
Automatic Volume Control
115
The device used to measure wavelengths of radio waves is
Wavemeter
116
A hollow metallic tube used in place of wire in electric circuits carrying high frequency currents is called
Waveguide
117
An instrument used to measure the intensity of radiations is the
Radiometer
118
An instrument used to measure electrical voltage is the
Voltmeter
119
VTVM stands for
Vacuum Tube Volt Meter
120
A circuit which maintains a constant voltage is called
Voltage Stabilizer
121
SCR stands for
Silicon Controlled Rectifier
122
A device used to increase or decrease electric voltageis called a
Transformer
123
A magnetic tape that records both audio and video signals is called a
Video Tape
124
The first electronic calculator was manufactured in 1963 by
Bell Punch Company,USA
125
MASER stands for
Microwave Amplification by stimulated Emission of Radiation
126
A computer which can handle a large volume of numbers is called a
Number cruncher
127
POST stands for
Power on Self Test
128
POST is a test carried out just after the computer has been
Switched on
129
An index of the files stored on a disk is called
Directory
130
CP/M stands for
Control program for Microcomputers
131
CP/M was developed by
digital Research Inc.,USA
132
MVS stands for
Multiple Virtual Storage Operating System
133
MVS is used in
Mainframe computers
134
The process of starting a computer is called
Booting
135
A group of four binary digits is called a
NIBBLE
136
BPI stands for
Bit per Inch
137
A smart card is a
multifunctional microprocessor
138
LIPS stands for
Logical Inferences Per Second
139
A computerized machine is normally called a
Robot
140
A robot is a machine directed by a
Computer
141
A robot which resembles a human being is called an
Android
142
PL/1 stands for
Programme Language-1
143
The language PL/1 has combined features of
COBOL and FORTRAN
144
BASIC stands for
Begineers All Purpose Symbolic Instruction Code
145
COBOL stands for
Common Busines Oriented Language
146
ALGOL stands for
Algorithmic Language
147
ALGOL was developed in the early 1960s in
Europe
148
COBOL was first introduced in the year
1961
149
FORTRAN stands for
Formula Translation
150
FORTRAN was developed and introduced by IBM in the year
1957
151
PL/1 was introduced in the 1960s by
IBM
152
COMAL stands for
Common Algorithmic Language
153
BASIC was developed by
John Kemeny and Thomas Kurtz
154
SNOBOL stands for
String Oriented Symbolic Language
155
SNOBOL was developed in
1962
156
LISP stands for
List Processing Language
157
LISP was developed by
John McCarthy
158
Loud speaker was invented by
Rice Kellogg
159
PROM stands for
Programmable Read Only Memory
160
Two types of RAM chips are
Dynamic,static
161
Data is fed into the computer by first converting it into
Binary codes