200 IMPORTANT EVERYDAY SCIENCE MCQS - BASIC LEVEL MCQS FOR NTS, PPSC, FPSC

200 IMPORTANT EVERYDAY SCIENCE MCQS - BASIC LEVEL MCQS FOR NTS, PPSC, FPSC

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200 Important Everyday Science MCQS - Basic Level Mcqs For Nts, Ppsc, Fpsc

1) One of the countries through which equator passes is:
(a) Kenya
(b) Malaysia
(c) Malta
(d) Pakistan

2) Copper can be converted into gold by:
(a) Artificial radioactivity
(b) heating
(c) Electroplating
(d) Chemical reaction

3) The three elements needed for healthy growth of plants are:
(a) N, P, K
(b) N, C, P
(c) N, K,
(d) N, S, P

4) Clocks, which moves with the velocities comparable with the velocity of light, run:

(a) fast
(b) slow
(c) equal to the velocity of light
(d) with zero velocity

5) Max Planck received the noble prize in Physics in 1918 for his discovery of:
(a) electron
(b) energy quanta
(c) photon
(d) positron

6) Bronze medal is made up of metals:
(a) (copper,nickel)
(b) (copper, tin)
(c) (copper, silver)
(d) (copper, zinc)

7) Addison’s disease is caused by the excessive secretion of:
(a) Antiduretic Harmone
(b) Luteinising Harmone
(c) Melanophore stimulating Harmone
(d) Adrenocorticotrophic Harmone

8) Development of calf muscles in ladies who wear high heels is a common example of:
(a) Natural Selection
(b) inheritance of acquired character
(c) Use and disuse of organ
(d) Artificial selection

9) Margalla Hill is a branch of:
(a) Karakorum range
(b) Hindukash range
(c) Himalaya range
(d) Nanga Parbat range

10) Humming bird belongs to a category called:
(a) Ectotherm
(b) Endotherm
(c) Exotherm
(d) Heterotherm.

(a) Oxidation-Loss of an electron
(b) Oxidation – gain of an electron
(c) Reduction – gain of a neutron
(d) Reduction – loss of a neutron

(11) Radioactive isotope of Uranium used in Nuclear Bomb is:

(a)92 U 235
(b)92 U 234
c)92 U 233
d)92 U 238

(12) Human population growth is greatest in developing countries because:

(a) the birth rate is high in developing countries
(b) the death rate is high in developing countries.
(c) much of the population has already reached the child bearing age.
(d) most of the world’s population lives in industrialized countries.

(13) Which woody raw material is used for the manufacture of paper pulp?

(a) Cotton
(b) Poplar 
(c) Bagasse
(d) Rice straw

(14) Rectified spirit contains alcohol about:

(a) 80%
(b) 95% 
(c) 70%
(d) 85%

(15) Which of the following elements is not present abundantly in earth’s crust:

(a) Silicon
(b) Radium 
(c) Aluminum
(d) Carbon

(16) The famous book; Al – Qanoun was written by the Muslim scientist:

(a.) Jabar bin Hayyan
(b) Zakariya Al – Razi
(c) Abu Ali Sina
(d) Abdul Qasim Majreeti

(17) Basic metals can be converted into gold by:

(a) Heating
(b) Beating
(c) Artificial nuclear radioactivity
(d) Chemical reaction

(18) A light year is a unit of:

(a) Time
(b) Energy
(c) Length
(d) Mass

(19) One of the main function of the earth’s ozone layer is to:

(a) Prevent global warming
(b) Filter out ultraviolet rays 
(c) Absorb pollution
(d) All of the above

 20. Insulin is injected into the intestines by

A. PancreasB. Liver
C. Stomach
D. Gall bladder

21. Lock Jaw, i.e., difficulty in opening the mouth is a symptom of

A. Cholera
B. Plague
C. TetanusD. Diphtheria

22. Which of the following pairs is incorrect?

A. Plague-rats
B. Rabies-dog
C. Tapeworm-pig
D. Poliomyelitis-monkey

23. Match the following columns

Column I Column II

A. Air-borne 1. Tetanus
B. Water-borne 2. Tuberculosis
C. Contact 3. Cholera
D. Wound 4. Syphilis

A B C D

(a) 2 3 1 4

(b) 2 3 4 1

(c) 3 2 4 1

(d) 4 3 2 1

24. Ricketts is a disease of the

A. BonesB. Tissue
C. Muscles
D. Blood

25. Which of the following statements is correct?

A. Pulmonary artery carries pure blood
B. Pulmonary artery carries impure blood
C. Pulmonary vein carries impure blood
D. None of these

26. Lungs are situated in the

A. Abdominal cavity
B. Pericardial cavity
C. Buccal cavity
D. Thoracic cavity

27. The human cell contains

A. 44 chromosomes
B. 48 chromosomes
C. 46 chromosomesD. 23 chromosomes

28. Enzymes help in

A. Respiration
B. Digestion of foodC. Immune system
D. Reproduction

29. Food is normally digested in the

A. Liver
B. Stomach
C. Small intestinesD. Large intestines

30. Myopia is a disease connected with

A. Ears
B. Eyes
C. Lungs
D. Brain

31. Leukemia is a disease of the

A. Lungs
B. BloodC. Skin
D. Nerves

32. Short-sightedness can be corrected by using

A. Convex lens
B. Concave lens
C. Convex-concave lens
D. Concave-convex lens

33. Trachoma is a disease of the

A. Liver
B. Eyes
C. Lungs
D. Kidneys

34. Match the following

Column I Column II

A. Beriberi 1. Vitamin A
B. Scurvy 2. Vitamin B
C. Rickets 3. Vitamin C
D. Night Blindness 4. Vitamin D

A B C D

(a) 3 2 1 4

(b) 2 1 3 4

(c) 2 3 4 1

(d) 2 3 1 4

35. Typhoid and cholera are typical examples of

A. Infectious diseases
B. Air-borne disease
C. Water-borne disease
D. None of these

36. Pyorrhea is a disease of the

A. Nose
B. GumsC. Heart
D. Lungs

37. Lack of what causes diabetes.

A. Sugar
B. Insulin
C. Calcium
D. Vitamins

38. Appendix is appendix is a part of

A. Small intestine
B. Large intestine
C. Stomach
D. Liver

39. Match the following columns

Column I Column II

A. Cataract 1. Bones
B. Jaundice 2. Eyes
C. Diabetes 3. Liver
D. Arthritis 4. Pancreas

A B C D

(a) 2 3 4 1

(b) 2 3 1 4

(c) 1 3 4 2

(d) 3 2 4 1

40. Bronchitis is a disease of which of the following organs?

A. Blood
B. Bladder
C. Liver
D. Respiratory tract

41. Water is heated in a kettle. The inside water is heated by convection. A person sitting near the fire receives heat by :

a) Conduction
b) Convection
c) Radiation
d) Reflection
e) None of these

42. A time can come when we will be able to design a machine which can go on working for ever without the expenditure of energy. Is it possible ?

a) No 
b) Yes
c) In due course time
d) Very soon
e) None of these

43. The measurement of rainfall is made by an instrument known as :

a) Hydrometer
b) Barometer
c) Hygrometer
d) Pedometer
e) None of these(Rain gauge)

44. Light year is a unit of :

a) Distance 
b) Time Period
c) Light intensity
d) Time
e) none of these

45. Three elements needed for the healthy growth of plants are :

a) N,P,K 
b) N,C,P
c) N,K,C
d) N,S,P
e) none of these

46.Copper can be converted into gold by :

a) Heating
b) Artificial Radioactivity
c) Electroplating
d) Chemical reaction
e) None of these

47. In winter an iron pipe feel colder than a wooden window . This is because wood is :

a) Conductor
b) non-Conductor
c) Semi- Conductor
d) Not a solid while iron is a solid
e) None of these

48. The echo (reflected sound) will be distinctly heard only at ordinary temperatures if the distance of the reflecting surfaces from the source of sound is at least :

a) 1120 ft
b) 120 ft
c) 56fft 
d) 100 ft
e) None of these

49. It is possible to recognize a person in the dark by simply hearing his unique voice . It is because of the:

a) pitch
b) Frequency
c) Time period
d) Quality 
e) None of these

50. When a ray of sunlight enters a dark room , its straight path become visible because of dust particles hanging in the air. It is because light is :

a) Visible
B) Transparent
c) Invisible (not confirmed)
d) opaque
e) None of these

51. A six feet tall lady wants to see her full image in a plane mirror . The minimum length of the mirror will be :

a) 6 feet
b) 12 feet
c) 4 feet
d) 3 feet 
e) None of these

52. The principle used in radar is the same as that of Sonar. In radar we use radio waves ; whereas in sonar we use :

A) red waves
b) Infrared waves
c) Ultrasonic 
d) super sonic
e) None of these

53. In a fission nuclear reaction , a heavy nucleus breaks up into smaller nuclei whereas in another nuclear reaction two or more than two possibly nuclei are fused to form a heavy nucleus This nuclear reaction is called :

a) Chemical Reaction
b) Nuclear reaction
c) Fission nuclear reaction
d) Fusion nuclear reaction 
e) None of these

54. Parsec is a unit of :

a) Energy
b) Time
c) Power
d) Distance
e) None of these

55. German Silver is an alloy of:

A) Zn + Ni
b) Cu + Zn 
c) Cu + Ni
d) Cu + Sn
e) None of these

56. The Continent Antarctica lies at the:

a) North pole b) South pole c) middle of the earth d) Equator
e) None of these

57. The temperature of the dead body is:

a) 0 'C
b) 37 '
c) room temperature
d) temperature of the place where it is kept 
e) None of these

58. Lactometer is a type of Hydrometer which is used to measure the specific gravity of :

a) Honey
b) Water
c) Milk
d) olive oil
e) None of these

59. Cusec is a unit of :

a) Area
b) Time
c) Distance
d) mass
e) None of these(it is unit of flow rate cubic per second)

60. The deepest place on earth is :

a) Trench
b) Mariana Trench 
C) Mangrove
d) Groove
e) None of these

61. Twinkling of stars is caused by :

a) Reflection of light 
b) Polarization of light 
c) refraction of light 
d) Interference of light 
e) None of these

62. Magnifying power of a simple microscope can be increased by : 
a) increasing focal length of the lens 
b) Decreasing focal length of the lens(for high magnification, focal length of magnifying glass should be small.)
c) Lens of large aperture 
d) lens of short aperture 
e) None of these 

63. Bronze medal is made up of metal :

a) Copper , Zinc 
b) Copper , Nickle 
c) Copper , Tin 
d) Sopper , Silver

64. One of the countries through which equator passes is :

a) Kenya 
B) Pakistan 
c) Malaysia 
d) Malta 
e) None of these

65. A very important practical application of properties of matter is hoeing or "godi" practiced by the farmers. This property of matter is called :

a) Elasticity 
b) Stress 
c) Capillarity(wiki answers) 
d) Strain 
e) None of these

66. It is observed that the total pressure exerted by air on the man of average siz is around 14.7 lb wt. per square inch. But the man feels quite comfortable,. It is because of :

a) An equal and opposite pressure acts from inside 
b) of the height of a man 
c) of gravity 
d) Earth pulls the man upward 
e) None of these

67) A nuclear reactor is a device used to carry out controlled nuclear reaction whereas GM counter is a device used to detect :

a) Current 
b) Voltage 
C) nuclear Radiation 
d) power 
e) None of these

68. A body can escape the gravitational pull of the earth if it is thrown up with a velocity of:

a) 25 miles per sec 
b ) 60 miles per sec 
c) 7 miles per sec 
d) 10 miles per sec 
e) None of these

69. Night vision is possible with the help of :

a) Red light 
b) Violet light 
c) Infrared Rays 
d) Ultra violet Light
e) None of these

70. Myopia is a defect of human eye. it can be corrected by using a lens called : 

a) Convex lens 
b) Concave lens 
c) Cylindrical lens 
d) Plano convex lens
e) None of these

71. Walnuts can be broken in the hand by squeezing two together but not one. It is because of :

a) Work done 
b) Power 
c) Energy 
d) Volume 
e) None of these

72. The instrument which i specially design for recording earth quake wave is called seismograph which measure earth quake waves on a

a) Diatonic scale 
b) Fahrenheit Scale 
c) Richter scale 
d) Celsius Scale 
e) None of these

73. The planet Mercury completes one rotation around the sun is 
a) 88 days
b) 365 days 
c) 98 days 
d) 60 days 
e) None of these

74. Fossils found in the lowest geological strata are generally most :

a) Advance 
b) Complex 
c) Primitive 
d) Specialized 
e) None of these

75. Evolution can be described as :

a) A continuing process 
b) A catastrophic event in the past 
c) Static 
d) The attaining of an ideal type 
e) None of these

76. What is the only source of new alleles?
a) Crossing over 
b) independent assortment 
c) Mutation 
d) Fertilization 
e) None of these

77. Polygenic characteristic are controlled by :
a) Dominant genes 
b) Recessive genes 
c) Multiple genes 
d) Mutated genes 
e) None of these

78. Which of the following , lists the four stages of food processing in order?

a) ingestion , digestion , absorption , elimination
b) digestion , ingestion , absorption , elimination
c) ingestion , absorption , elimination , digestion 
d) absorption , digestion , ingestion , elimination
e) None of these

79. In humans , most nutrient molecules are absorbed by the :

a) small intestine 
b) stomach 
c) liver 
d) large intestine 
e) None of these

80. The energy needed to fuel essential body processes is called :

a) Essential nutrient level 
b) Basal metabolism 
c) None of these
d) recommended daily allowance 
e) Optimum energy intake

81. Which of the following is an organic molecule needed by the body in small amounts?

a) Protein
b) Vitamin C
c) Zinc
d) Monosaccharide
e) None of these

82. Inhaled air passes through which of the following in the last?

a) Bronchiole 
b) Larynx
c) Pharynx
d) Trachea
e) None of these

83. Which of the following is a form of sexual reproduction?

a) Hermaphroditism 
B) Fission
c) Fragmentation
d) Budding
e) None of these

84. Cobalt is a material which is :
a) Strongly attracted by a magnet
B) Not attracted by a magnet
c) not a magnet
d) Weakly attracted by a magnet
e) None of these

85. Laughing gas has chemical composition of the following two elements which are :

a) Nitrogen + Hydrogen
b) Nitrogen + Carbon
c) Nitrogen + oxygen
d) Oxygen + Carbon
e) None of these

86. Hepatitis A is transmitted to different individuals by :

a) Water 
b) Sneezing
c) Spit
d) Foeces
e) None of these

87. The unit that coordinates different devices of the computer system is :

a) ALUb)Register
c) Control unit
d) Logical instruction
e) None of these

88. The most abundant element present is in the human body is :

a) Nitrogen
b) Oxygen 
c) Carbon
d) Hydrogen
e) None of these

89. Cancer can be treated by :

a) Antibiotics and vaccines
b) Radiotherapy and antibodies
c) Chemotherapy and radiotherapy 
d) Antibodies and chemotherapy
e) None of these

90. Animals obtain carbon dioxide mainly from :

a) Starch
b) Sucrose
c) Glucose(when glucose is broken down, Carbon dioxide and water are produced)
d) Glycogen
e) None of these\

91) Person with following blood group are considered to be universal recipient.

a. A+
b. B+
c. AB+
d. O+
e. None of these

(92) Study of life in outer space is known as:

a. Endobiology
b. Exobiology
c. Enterobiology
d. Neobiology
e. Micro biology

(93) The name of the common mineral salt present in seat is:

a. Calcium Oxalate
b. Potassium Sulphate
c. Sodium Chloride
d. Iron Sulphate
e. None of these

(94) Sensitive layer of the eye is:

a. Choriods
b. Sclerotic
c. Retina
d. Cornea
e. None of these

(95) Laughing gas has chemical composition of following two elements.

a. Nitrogen + Hydrogen
b. Nitrogen + Carbon
c. Nitrogen + Oxygen
d. Oxygen + Carbon
e. None of these

(96) Dr. Abdus Salam of Pakistan was one of the contributors of the unification of:

a. Electromagnetic force and gravitational force
b. Electromagnetic force and weak nuclear force
c. Gravitational force and weak nuclear force
d. Weak nuclear force and strong nuclear force
e. None of these

(97) Which triplet in DNA codes for valine:

a. CTT
b. AGU
c. CAT
d. AAT
e. None of these

(98) What is the chance of diabetic baby born to parents both heterozygous normal ?

a. Zero
b. ¼
c. ½
d. ¾
e. None of these

(99) Which of the following is not a part of Darwinism:

a. Over production
b. Natural selection
c. Inheritance for acquired characters
d. Competition for survival
e. None of these

(100) Role of biotechnology in the production of food based on:

a. Decomposition
b. Respiration
c. Digestion
d. Fermentation\
e. None of these

(101) Which form of drug abuse involves most risk of infection with the HIV (AIDS) virus:

a. Cigarette smoking
b. Using alcholo
c. Injection of heroine
d. Taking too much aspirin
e. None of these

(102) Founder of modern astronomy was:

a. Archimedes
b. William Gilbert
c. Nicolas Copernicus
d. Michael Faraday
e. None of these

(103) The instrument which measures very high temperature is:

a. Manometer
b. Thermostat
c. Chronometer
d. Pyrometer
e. None of these

(104) The science which deals with study of manners and customs of people is:

a. Ethnology
b. Morphology
c. Ethics
d. Genetics
e. None of these

(105) Chemical used to kill rats and mice are:

a. Insecticides
b. Rodenticides
c. Fungicides
d. Herbicides
e. None of these

(106) Dry ice is:

a. Methane hydrate
b. Liquid Nitrogen
c. Solid Carbon dioxide
d. Frozen Water
e. None of these

(107) Chemical name of vinegar is:

a. Sodium Nitrate b. Dilute acetic acid
c. Chloride of lime
d. Calcium
e. None of these

(108) Defeciency of following vitamin decreases hemoglobin production:

a. Biotin
b. Thiamine
c. Niacin
d. Pyridoxine
e. None of these

(109) Hygrometer is used for measuring the:

a. Speed of sound
b. Density of milk
c. Humidity of air
d. Specific gravity of liquids
e. None of these

(110) Bronze is an alloy of:

a. Copper and Zinc
b. Tin and Zinc
c. Copper and Tin
d. Iron and Zinc
e. None of these
(111) Which of the following is most elastic ?

a. Steel
b. Rubber
c. Glass
d. Sponge
e. None of these

(112) Orbital period of the planet Mercury around the sun is:

a. 88 days
b. 365 days
c. 2 years
d. 98 days
e. None of these

(113) The most splendid and the most magnificient constellation on the sky is:

a. Orion
b. Columbia
c. Canis Major
d. Taurus
e. None of these

(114) “Black holes” refer to:

a. Hole occurring in heavenly bodies
b. Bright spots on the sun
c. Collapsing objects of high density
d. Collapsing of low density
e. None of these

(115) Eugenics is the study of:

a. Altering human beings by changing their genetic components
b. People of European region
c. Different races of mankind
d. Genetic of plants
e. None of these

(116) The position of earth in its orbit, when it is at its greatest distance from the sun causing northern summer is called:

a. Aphelion
b. Perihelion
c. Perigee
d. Apogee
e. None of these

(117) Diamond is a very expensive ornament. It is composed of a single element:

a. Carbon
b. Gold
c. Silver
d. Platinum
e. None of these

(118) Which of the following layers make radio transmission possible?

a. Troposphere
b. Ionosphere
c. Mesosphere
d. Stratosphere
e. None of these

(119) Which of the following explains the reason why there is no total eclipse of the sun?

a. Size of the earth in relation to that of moon
b. Orbit of moon around earth
c. Direction of rotation of earth around sun
d. Area of the sun covered by the moon
e. None of these

(120) Television signals are converted into light signals by:

a. Optical fiber
b. Transistor
c. Decoder
d.photo diode
e. None of these

(121) Where do most of Asteroids lie?

a. In asteroid belt between the orbits of Mars and Jupiter
b. In asteroid belt between the orbits of Mars and Venus
c. In asteroid belt between the orbits of Jupiter and Venus
d. Everywhere in the sky
e. None of these

(122) The number of spark plugs needed in a diesel engine is:

a. 2
b. 3
c. 0
d. 4
e. None of these

(123) The half life of a radioactive element is 8-days. How long it take to reduce it from 10 mg to 5 mg?

a. 4 days
b. 12 days
c. 16 days
d. 8 days
e. None of these

(124) The term ‘Blue Shift’ is used to indicate:

a. Doppler effect in which an object appears bluer when it is moving towards the observer or observer is moving towards the object.
b. Turning a star from white to blue
c. In future sun would become blue
d. Black hole was blue at its start
e. None of these

(125) Kilowatt-hour is a unit of:

a. Power
b. Electric Current
c. Energy
d. Time
e. None of these

(126) Fuel used in a Fast Breeder Reactor is:

a. Uranium Oxide
b. Uranium Plutonium carbide
c. Uranium Plutonium Oxide
d. Uranium thorium Oxide
e. None of these

(127) Monsoon is caused by:

a. Seasonal reversal of winds
b. Revolution of earth
c. Movement of clouds
d. Rise in temperature
e. Rain forests

(128) Which of the following atmospheric layers help in radio communication?

a. Exosphere
b. Ionosphere
c. Troposphere
d. Stratosphere
e. Ozone layer

(129) A moderator is used in nuclear reactor in order to:

a. Accelerate the neutrons
b. Slow down the speed of the neutrons
c. Increase the number of elections
d. Decrease the number of electrons
e. None of these

(130) Sedimentary rocks are:

a. Porous
b. Hard
c. Rough
d. Brittle
e. Volcanic

(131) Which one of the following is a non-metallic mineral?

a. Manganese
b. Magnesium
c. Gypsum
d. Bauxite
e. None of these

(132) Ozone layer prevents the following radiation from entering the atmosphere:

a. Infra-red
b. Ultraviolet
c. X-rays
d. Gamma rays
e. None of these

(133) The phenomenon of Aurora Borealis, the display of red and green lights in northern hemisphere is due to radiations from:

a. Ionosphere
b. Troposphere
c. Mesosphere
d. Stratosphere
e. None of these(Thermosphere wikipedia)

(134) Yeast is used in making bread because it produces:

a. Carbon dioxide
b. Sugar
c. Bacteria
d. Oxygen
e. None of these

(135) Oasis is associated with:

a. Glaciers
b. Desert
c. Islands or Last Island
d. Volcanoes
e. Fertile land

(136) Quartz crystal in quartz watches work on the principle called:

a. Photoelectric effect
b. Stark effect
c. Thermionic effect
d. Piezo-electric effect
e. None of these

(137) The fruits without seed, like banana, are called:

a. seedless fruits
b. parthenogenesis fruits
c. parthenocarpic fruits
d. placental fruits
e. Organic fruits

(138) Animal which captures and readily kills living animals for its food is called:

a. Parasite
b. Scavenger
c. Predator 
d. Mammal
e. None of these

(139) In a railway track, two rails are joined end to end with a gap tin between them because:

a. Steel can be saved
b. Accidents due to contraction in winter can be avoided
c. Air gaps are necessary for bearing the weight of running train
d. Accidents due to expansion in summer can be avoided
e. All of these

(140) Name the famous book of Ibn-Sina in which he discussed human physiology and medicine:

a. Al-Qanoonb. Al-Masudi
c. New Renaissance
d. Tadhkira
e. None of these

141- The planet of the solar system which has maximum numbers of Moon is:

a) Jupiter 
b) Venus
c) Saturn
d) Uranus
e) None of these

142. Sun is a:

a) Planet 
b) Comet
c) Satellite
d) Aurora
e) None of these

143. the age of the solar system is

a) 4.5 billion years 
b) 5.5 billion years
c) 6.5 billion years
d) 7.5 billion years
e) None of these

144. A unit of length equal to the average distance between the earth and sun is called

a) Light year 
b) Astronomical unit 
c) Parsec
d) Parallax
e) None of these

145. An eclipse of the sun occurs when

a) The moon is between the sun and the earth 
b) The sun is between the earth and the moon 
c) The earth is between the sun and the moon
d) The earth casts its shadow on the moon
e) None of these

146. The ozone layer protects the earth from rays sent by the sun:

a) Ultraviolet rays
b) Infrared rays 
c) Gamma rays
d) radioactive rays
e) None of these

147. The ozone layer is present about 30miles (50km) in atmosphere above earth. The stratum (layer) of atmosphere in which ozone layer lies is called as:

a) Exosphere
b) Mesosphere 
c) Stratosphere
d) ionosphere
e) Troposphere

148. Which rocks are formed by the alteration of pre-existing rocks by great heat or pressure

a) Igneous rocks 
b) Sedimentary rocks
c) Metamorphic rocks
d) Acid rocks
e) Basic rocks

149. The most abundant natural Iron oxides are

a) Magnetite and Pyrite 
b) Magnetite and Bauxite
c) Hematite and Pyrite
d) Hematite and Magnetite 
e) Hematite and Bauxite

150.The most abundant elements in sea water are

a) Sodium and Potassium 
b) Sodium and Calcium
c) Sodium and Chlorine
d) Chlorine and Iodine 
e) Magnesium and Sulphur

151. An electric current can produce

a) Chemical effect 
b) Magnetic effect
c) Heating effect
d) All of these three 
e) None of these

152. The unit of home electricity energy consumption is:

a) Watt hour 
b) Kilowatt hour
c) Joule hour
d) Kilojoule hour 
e) None of these 

153. The magnet always points in the same direction, if move freely i.e. towards north and south poles, because of:

a) Gravitational field 
b) A lot of metals deposits on north and south poles
c) Due to attraction of north pole and repulsion of Western pole
d) Earth is a huge magnet 
e) None of these 

154. When sound is reflected from floor, ceiling or a wall , it mixes with the original sound and change its complexion, it is called as

a) Sound 
b) Echo
c) Reverberation
d) noise 
e) None of these 

155. the speed of sound in dry air at 20 C is about

a) 130 meters per second 
b) 230 meters per second
c) 330 meters per second
d) 430 meters per second
e) None of these 

156.The of light in vacuum is about

a) 300 Million meters per second
b) 300 Million meters per hour
c) 300 Million kilometers per second
d) 300 Million kilometers per hour
e) None of these

157. The time light takes from Sun to reach Earth is:

a) 8 minutes 
b) 25 minutes
c) 45 minutes
d) 60 minutes 
e) None of these

158. Light from Sun travels a distance before it reaches Earth:

a) 50 Million Km
b) 100 Million Km
c) 150 Million Km
d) 200 Million Km
e) None of these

159. the most suitable thermometer for measuring the boiling point of water is:

a) Mercury thermometer
b) Alcohol thermometer
c) Bimetallic thermometer
d) Liquid crystal thermometer
e) None of these

160. The density of water is greatest at:

a) 32°C
b) 0°C
c) 4°C
d) 100°C
e) None of these
 

161.Which one of the following statements is true:

a) Gases do not conduct heat
b) The best conductors are non-metals
c) Conduction currents occur only in liquids
d) A vacuum can not conduct heat
e) None of the statements is true.
162. Ice can be changed to water by:

a) Adding more water molecules
b) Changing the motion of the water molecules
c) Rearranging the atoms in water molecules
d) Destroying the atoms in water molecules
e) None of these

163. The building blocks of elements are called:

a) Atoms
b) Molecules
c) Compounds
d) Isotopes
e) None of these

164. Boiling of an egg is a change which is:

a) Physical
b) Chemical
c) Physiological
d) Morphological
e) None of these

165. The temperature of liquid nitrogen is:

a) -32°C
b) -80°C
c) -100°C
d) -196°C
e) None of these

166. Which one of the following is an alkali?

a) water
b) vinegar
c) lemon juice
d) slaked lime
e) None of these

167. If an alkali is slowly added to an acidic solution, the pH of the acidic solution will:

a) Increase
b) Decrease
c) Increase to 7 and then decrease
d) Decrease to 7 and then increase
e) Will remain same

168. The usual raw material for ceramics, generally found beneath the top soil is?

a) Sand
b) Slit
c) Clay
d) Plaster of Paris
e) Melamine

169. Polyamides are synthetic polymers commonly known as:

a) Synthetic rubber
b) Nylon
c) Cellulose
d) Protein
e) None of these.

170. Telephone was invented in 1876 in America by:

a) Marconi
b) Galileo
c) John Beard
d) Edison
e) Graham Bell.

171. Information can be sent over long distances in the form of:

a) Electrical signals through wires
b) Light signals through optical fibres
c) Radio waves through air
d) Any combination of these three.
e) None of these

172. Information can be stored in:

a) Audio and video cassettes
b) Floppy and compact discs
c) Hard disks
d) Laser and optical disks
e) All of these four

173.Computers can:

a) Add and subtract information only.
b) Add subtract and sort information only.
c) Add subtract sort and classify information.
d) Add and subtract but cannot sort information.
e) Add subtract and sort but cannot classify information.

174.IBM stands for:

a) International Business Machines
b) International Big Machines
c) Interrelated Business Machines
d) Interrelated Big Machines
e) None of these.

175. Chemicals used to kill weeds are called as:

a) Insecticides
b) Fungicides
c) Herbicides
d) Fumigants
e) None of these.

176. The cytoplasm consists of several types of structures, which are called:

a) Protoplasm
b) Nucleus
c) Cytochromes
d) Organelles
e) None of these.

177. The structure of DNA was elaborated by Watson and Crick in:

a) 1909
b) 1923
c) 1945
d) 1953
e) None of these.

178. In a DNA molecules, the rulefor base pairing is:

a) Adenine always bound with thymine and cytosine with guanine
b) Adenine always bound with cytosine and thymine with guanine
c) Adenine always bound with guanine and cytosine with thymine
d) Adenine always bound with uracil and cytosine with guanine
e) None of these.

179. Man belongs to the family:

a) Felidae
b) Hominidae
c) Mammalia
d) Primataceae
e) None of these.

180. Deficiency of vitamin C in human body causes a deficiency disease called:

a) Beriberi
b) Night blindness
c) Rickets
d) Scurvy
e) None of these.
 

   181. To measure the specific gravity of milk, the instrument used is:

  

   ( a) Hygrometer

     b) Barometer

     c) Lactometer

     d) Hydrometer

     e) None of these.

   182. one of the fundamental characteristics of living organisms is:

   a) Photosynthesis

   b) Digestion

   c) Excretion

   d) Metabolism

   e) None of these.

  

   183. Plants growing on other plants are called as:

   a) Saprophytes

   b) Parasites

   c) Epiphytes

   d) Pathogens

   e) None of these.

   184. As per eating habit, squirrels are:

   a) Frugivorous

   b) Herbivorous

   c) Carnivorous

   d) Omnivorous

   e) Insectivorous.

  185. Water loss from leaves through stomata is called as:

   a) Evaporation

   b) Transpiration

   c) Evapo-Transpiration

   d) Respiration

   e) None of these.

   186. the study of how plants and animals interact with one another and with the non-living environment is called as:

  a) Ecosystem

  b) Sociology

  c) Ecology

  d) Habitat

  e) None of these.

 187. The number of bines in human body is:

  a) 200

  b) 202

  c) 204

  d) 206

  e ) None of these.

  188. Nervous system in human consists of:

   a) Brain and spinal cord.

   b) Brain and nerves.

   c) Spinal cord and nerves.

   d) Brain, spinal cord and nerves.

   e) None of these.

  189. In human eye, the light sensitive layer made of specializes nerve cells, rods and cones is called as:

   a ) The pupil

    b) The cornea

   c) The sclera

   d) The iris

   e) The retina.

   190. Erythrocytes are also called as:

   a) Red blood cells

   b) White blood cells

   c) Platelets

   d) Plasma

   e) None of these

  

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