General Science - General Knowledge

8/6/2019 General Science - General Knowledge

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Chemical formula for water is

A.NaA1O2 B.H2O

C. Al2O3 D.CaSiO3

Answer: Option B

Brass gets discolored in air because of the presence of which of the following gases

in air?

A.Oxygen

B.Hydrogen sulphide

C.Carbon dioxide

D.Nitrogen

Answer: Option B

Which of the following is a non metal that remains liquid at room temperature?

A.Phosphorous B.Bromine

C.Chlorine D.Helium

Answer: Option B

Chlorophyll is a naturally occurring chelate compound in which central metal is

A.copper B.magnesium

C.iron D.calcium

Answer: Option B

Which of the following is used in pencils?

A.Graphite B.Silicon

C.Charcoal D.Phosphorous

Answer: Option A

Which of the following metals forms an amalgam with other metals?

A.Tin B.Mercury

C.Lead D.Zinc

Answer: Option B

The gas usually filled in the electric bulb is

A.nitrogen

B.hydrogen

C.carbon dioxide

D.oxygen
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Answer: Option A

Washing soda is the common name for

A.Sodium carbonate

B.Calcium bicarbonate

C.Sodium bicarbonate

D.Calcium carbonate

Answer: Option A

Quartz crystals normally used in quartz clocks etc. is chemically

A.silicon dioxide

B.germanium oxide

C.a mixture of germanium oxide and silicon dioxide

D.sodium silicate

Answer: Option A

Which of the gas is not known as green house gas?

A.Methane

B.Nitrous oxide

C.Carbon dioxide

D.Hydrogen

Answer: Option D

Bromine is a

A.black solid

B.red liquid

C.colourless gas

D.highly inflammable gas

Answer: Option B

The hardest substance available on earth is

A.Gold B.CoalC.Diamond D.Platinum

Answer: Option C

The variety of coal in which the deposit contains recognisable traces of the original

plant material is


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A.bitumen B.anthracite

C.lignite D.peat

Answer: Option D

Tetraethyl lead is used as

A.pain killer

B.fire extinguisher

C.mosquito repellent

D.petrol additive

Answer: Option D

Which of the following is used as a lubricant?

A.Graphite

B.Silica

C.Iron Oxide

D.Diamond

Answer: Option A

When an iron nail gets rusted, iron oxide is formed

A.without any change in the weight of the nail

B.with decrease in the weight of the nail

C.with increase in the weight of the nail

D.without any change in colour or weight of the nail

Answer: Option C

Galvanised iron sheets have a coating of

A.lead B.chromium

C.zinc D.tin

Answer: Option C

Among the various allotropes of carbon,

A.coke is the hardest, graphite is the softest

B.diamond is the hardest, coke is the softestC.diamond is the hardest, graphite is the softest

D.diamond is the hardest, lamp black is the softest

Answer: Option C

The group of metals Fe, Co, Ni may best called as

A.transition metals


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B.main group metals

C.alkali metals

D.rare metals

Answer: Option A

Heavy water is

A.deuterium oxide

B.PH7

C.rain water

D.tritium oxide

Answer: Option A

The chemical (ethyl merceptan) added to the otherwise odourless LPG cooking gas

for imparting a detectable smell to the gas is a compound of

A.bromine B.fluorine

C.chlorine D.sulphur

Answer: Option D

The element common to all acids is

A.hydrogen B.carbon

C.sulphur D.oxygen

Answer: Option A

Non stick cooking utensils are coated with

A.Teflon

B.PVC

C.black paint

D.polystyrene

Answer: Option A

Monazite is an ore of

A.titanium B.zirconium

C.iron D.thorium

Answer: Option D

Carbon, diamond and graphite are together called

A.allotropes B.isomers

C.isomorphs D.isotopes

Answer: Option A

Potassium nitrate is used in


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A.medicine B.fertiliser

C.salt D.glass

Answer: Option B

Permanent hardness of water may be removed by the addition of

A.sodium carbonate

B.alum

C.potassium permanganate

D.lime

Answer: Option A

Soda water contains

A.carbonic acid

B.sulphuric acid

C.carbon dioxide

D.nitrous acid

Answer: Option C

The most important ore of aluminium is

A.galena B.calamine

C.calcite D.bauxite

Answer: Option D

Most soluble in water is

A.camphor

B.sulphur

C.common salt

D.sugar

Answer: Option D

Which of the following was to be discovered first in the chromospheres of the sun?

A.Krypton B.Xenon

C.Neon D.Helium

Answer: Option D

Which of the following is in liquid form at room temperature?

A.Lithium B.Sodium

C.Francium D.Cerium

Answer: Option C

Sodium metal is kept under


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A.petrol B.alcohol

C.water D.kerosene

Answer: Option D

Which of the following are the ingredients of gun metal?

A.Iron, Zinc, Titanium

B.Iron, tin

C.Iron, Brass, Tin

D.Copper, Tin

Answer: Option D

From which mineral is radium obtained?

A.Rutile B.Haematite

C.Limestone D.Pitchblende

Answer: Option D

What is laughing gas?

A.Nitrous Oxide

B.Carbon monoxide

C.Sulphur dioxide

D.Hydrogen peroxide

Answer: Option A

Actinides are the elements with atomic numbers from

A.97 to 104

B.101 to 115

C.89 to 103

D.36 from 43

Answer: Option C

The two elements that are frequently used for making transistors are

A.boron and aluminium

B.silicon and germanium

C.iridium and tungsten

D.niobium and columbium

Answer: Option B

The filament of an electric bulb is made of

A.tungsten B.nichrome

C.graphite D.iron

Answer: Option A


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Diamond is an allotropic form of

A.germanium B.carbon

C.silicon D.sulphur

Answer: Option B

In fireworks, the green flame is produced because of

A.sodium B.barium

C.mercury D.potassium

Answer: Option B

Permanent hardness of water can be removed by adding

A.chlorine

B.washing soda

C.potassium permanganate

D.bleaching powder

Answer: Option B

Marsh gas is

A.nitrogen B.ethane

C.methane D.hydrogen

Answer: Option C

LPG consists of mainly

A.methane, ethane and hexane

B.ethane, hexane and nonane

C.methane, hexane and nonane

D.methane, butane and propane

Answer: Option D

Air is a/an

A.compound B.element

C.electrolyte D.mixture

Answer: Option D

Production of chlorofluorocarbons (CFC) gas which is proposed to be banned inIndia, is used in which of the following domestic products?

A.Television

B.Refrigerator

C.Tube light

D.Cooking gas

Answer: Option B


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Balloons are filled with

A.nitrogen B.helium

C.oxygen D.argon

Answer & Explanation

Answer: Option B

Which of the following does not contain a coinage metal?

A.Silver and Gold

B.Zinc and Gold

C.Copper and Silver

D.Copper and Gold

Answer: Option B

Which metal pollute the air of a big city?

A.Copper B.Chromium

C.Lead D.Cadmium

Answer: Option C

Bell metal is an alloy of

A.nickel and copper

B.zinc and copper

C.brass and nickel

D.tin and copper

Answer: Option D

Water is a good solvent of ionic salts because

A.it has a high specific heat

B.it has no colour

C.it has a high dipole moment

D.it has a high boiling point

Answer: Option C

Which of the following is not an isotope of hydrogen?

A.Tritium B.Deuterium

C.Protium D.Yttrium

Answer: Option D

The main constituents of pearls are

A.calcium oxide and ammonium chloride

B.calcium carbonate and magnesium carbonate

C.aragonite and conchiolin


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D.ammonium sulphate and sodium carbonate

Answer: Option B

Amalgams are

A.highly coloured alloys

B.alloys which contain mercury as one of the contents

C.alloys which have great resistance to abrasion

D.alloys which contain carbon

Answer: Option B

Which of the following is the lightest metal?

A.Mercury B.Lithium

C.Lead D.Silver

Answer: Option B

Which of the following metals remain in liquid for under normal conditions?

A.Radium B.Zinc

C.Uranium D.Mercury

Answer: Option D

Potassium Permanganate is used for purifying drinking water, because

A.it is a sterilising agent

B.it dissolves the impurities of water

C.it is a reducing agent

D.it is an oxidising agent

Answer: Option D

Which of the following substances is a bad conductor of electricity but a good

conductor of heat?

A.Mica B.Perspex

C.Celluloid D.Asbestos

Answer: Option A

Which of the following is an element?

A.Ruby B.Sapphire

C.Emerald D.Diamond

Answer: Option D


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1 The theory of relativity was propounded by Albert Einstein

2The principal metal used in manufacturing steelis

Iron

3 An altimeter is used for measuring Altitude

4 Oology is the study of Bird Eggs

5 Radioactivity was discovered by Henry Bacquerel

6 The metal used in storage batteries is Lead

7The instrument used to measure the relative

humidity of air isHygrometer

8 Barometer was invented by Torricelli

9 The unit of power is Watt

10 Radium was discovered by Marie and Pierrie Curie

11 The existence of isotopes was discovered by Frederick Soddy

12 Dynamo was invented by Michael Faraday

13 The nuclear reactor was invented by Enrico Ferni

14 The law of gravitation was propounded by Sir Isaac Newton

15 Crescograph was invented by J.C.Bose

16 Crescograph is used to measure the Rate of growth of a plant

17 Galileo's first scientific discovery was Pendulum

18 Microscope was invented by Aaton Van Leewen Hock

19The scientist who is known as father of modernbiology is

Aristotle

20The first person to see a cell under microscope

wasRobert Hooke

21 The smallest flowering plant is Worffia

22 The four blood groups were discovered by Karl Landsteiner

23 Sodium was discovered by Sir Humphry Davy

24 The atomic number of oxygen is Eight

25 The basic building blocks of proteins are Amino acids

26 The botanical name of the cotton plant is Gossipium Hirsutum

27 An Electroscope is used to Detect charges on a body

28 The unit of loudness is Phon

29 An ammeter is used to measure Electric current


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30 Plant that eat insects are called Insectivorous plants

31Fruits that are formed without fertilization are

calledParthenocarpic

32Plants that flower only once in their lifetime are

calledMono carpic

33 The botanical name for rice is Oryza Sativa

34 Penicillin is obtained from Mould35 The largest tree in the world is Seguoia Gigantica

36 Herpetology is the study of Reptiles

37 Entomology is the study of Insects

38 Ornithology is the study of Birds

39 Ichtyology is the study of Fishes

40 Osteology is the study of Bones

41 The botanical name for brinjal is Solanum melongenal

42 The botanical name for onion is Allium Cepa

43 The study of sound is called Acoustics

44 The study of heavenly bodies is called Astronomy

45 The study of tissues is called Histology

46 Electric Lamp was invented by Thomas alva Edison

47 The fear of crowd is called Ochlophobia

48 The fear of books is called Bibliophobia

49 The fear of going to bed is called Clinophobia50 The symbol of gold is Au

51 The symbol of sodium is Na

52 The symbol of Sr stands for Strontium

53 The symbol Rb stands for Rubidium

54 The symbol Md stands for Mendelevium

55 Calcium sulphate is commonly called Plaster of Paris

56 Sodium carbonate is commonly called Washing Soda

57 Sodium chloride is commonly known as Common Salt

58 The chemical name of Chloroform is Trichloromethane

59 The chemical name of baking powder is Sodium bicarbonate

60 The chemical name of bleaching powder is Calcium hypochlorite

61 The formula HCL stands for Hydrochloric Acid


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62 The formula H2SO4 stands for Sulphuric Acid

63 The formula CHCI3 stands for Trichloromethane

64 The formula H2O2 stands for Hydrogen peroxide

65A fungus which can only survive on other living

organisms is calledObligate Parasite

66 A plant which lives in the dark is called Scotophyte

67 A plant adapted to live in dry places is called a Xerophyte

68 A plant adapted for growth in water is called a Hydrophyte

69 Bifocal lens was invented by Benjamin Franklin

70 Cement was invented by Joseph Aspdin

71 Laser was invented by Dr.Charles H.Townes

72 Electromagnet was invented by William Sturgeon

73 Rayon was invented by Sir Joseph Swann

74 Thermostat is an instrument used for regulating Constant temperature

75The science of organic forms and structures is

known asMorphology

76 Phycology is the study of Algae

77Tata Institute of Fundamental Research was

established in1945

78 CSIR stands forCouncil of Scientific andIndustrial Research

79 ISRO stands forIndian Space Research

Organisation80 The first human being to land on moon was Neil Armstrong

81 The first Indian in space was Rakesh Sharma

82 ISAC stands for ISRO Satellite Centre

83 VSSC stands for Vikram Sarabhai space Centre

84 The headquarters of ISRO is located at Bangalore

85 VSSC is located at Thiruvananthapuram

86 ISAC is located at Bangalore

87 National Science Centre is located at New Delhi

88 Central Tobacco Research Institute is located at Rajahmundry

89Indian Institute of Horticultural Research islocated at

Bangalore

90 The Atomic Energy Commission was set up in August 1948


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91 The first Indian Satellite was Aryabhatta

92 The first Indian Satellite was launched in the year 1975

93 ASLV stands forAugmented Satellite LaunchVehicle

94 INSAT stands for Indian National Satellite

95 The fear of women is known as Gynophobia

96 The fear of men is known as Androphobia

97The scientist who developed the Quantum theory

wasMax Plonck

98 The steam engine was invented by James Watt

99 The botanical name of tea is Camellia Sinensis

100 Logarithms were devised by John Napier

101 The acid used in a car battery is Sulphuric acid

102The system for writing by blind people was

invented byLouis Braille

103 The parachute was used for the first time by J.P.Blanchard

104The German physicit who first demonstrated the

existence of Radio waves wasHenrich Hertz

105The instrument that records the intensity of

earthquakes isSeismograph

106 The laws of floating bodies was discovered by Archimedes

107 The density of milk is measured by a Lactometer

108 Fountain pen was invented by L.E.Waterman

109The instrument used to measure the pressure of

gases is theMonometer

110 Bhaskara I was a famous Astronomer

111The first atomic power station established in

India was theTarapore Atomic Power Station

112 The role of heredity was demonstrated by Mendel

113The instrument used to measure the concentration

of salt water is theSalinometer

114 Spectroscopy is the study of Anders John Angstrom

115 Dactylography is the study of Finger Prints

116 A tangent galvanometer is used to study the Strength of direct current

117 The fruit of Oak is called Acron

118 ZETA stands for Zero Energy Thermonuclear


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Assembly

119 The formula C6H5OH stands for Phenol

120Michael Faraday worked as an assistant underanother scientist whose name was

Sir Humphry Davy

121 Vulcanised rubber was invented by Charles Goodyear

122 The symbol Zn stands for Zinc

123 The symbol He stands for Helium

124 Celluloid was invented by A.Parker

125 Glider was invented by Sir George Caley

126 Safety matches was invented by J.E.Lundstrom

127 Radio valve was invented by Sir J.A.Fleming

128 Space Applications Centre is located at Ahmedabad

129 Atomic Energy Commission is located at Mumbai

130 Dynamics is the study of Movements of bodies

131 Statics is the study of Forces acting on bodies at rest

132 Mechanics is the study of Forces acting on bodies

133 Zoology is the study of Animal life

134 Botany is the study of Plant life

135 Psychology is the study of Human mind

136 The first American to orbit earth was John H.Glen

137 The electro-cardiograph was invented by William Einthoven

138 The molecular formula of cane sugar is C12H22O11

139A compound which contains only hydrogen and

Carbon is called aHydrocarbon

140The liquid used to preserve specimens of plans

and animals isFormalin

141 The law of segregaton was propounded by Mendel

142 Auriscope is used to detect Ear disorders

143 The three states of matter are Solid,liquid and gas

144 The scientific name for blood platelets is Thrombocytes

145 The response of a plant to heat is called Thermotropism

146 The response of a plant to touch is called Trigmotropism

147 The symbol Zr stands for Zirconium

148 Nickel was discovered by Cronstledt


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149 Manganese was discovered by Gahn

150 The common name for pottasium carbonate is Potash

151 Bismuth was discovered by Valentine

152 The biggest plant seed is Cocodemer

153 Toxicology is the study of Poisons

154 Virology is the study of Viruses

155 Paleontology is the study of Fossils

156 Calorimeter is used to measure Quantity of heat

157 Chronometer was invented by John Harrison

158 Stethoscope was invented by William Stockes

159 Spinning frame was invented by Sir Richard Arkwright

160 Al stands for Aluminium

161 Gd stands for Gadolinium

162 Ir stands for Iridium

163 Bi stands for Bismuth

164 The Chemical formula of sodium bicarbonate is NaHCO3

165 The chemical formula of common salt is Nacl

166 The chemical formula of washing soda is Na2CO3,IOH2O

167 The chemical formula of lime soda is CaCO3

168 The chemical formula of chloroform is CHcl3

169 The study of grasses is known as Agrostology

170 The study of antiquities is known as Archaeology

171 The study of the duration of life is known as Chronobiology

172 The study of bacteria is known as Bacteriology

173 Nylon was invented by Dr.Wallace H.Carothers

174 Electric razor was invented by Jacob Schick

175 The symbol of silver is Ag

176 The symbol of silicon is Si

177 The symbol of titanium is Ti

178 Calcium oxide is commonly known as Quick lime

179A deviation of light passing from one medium toanother is known as

Refraction

180An apparatus for generation of atomic energy is

called aReactor


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181A machine used for converting mechanicalenergy into electrical energy is called a

Generator

182 The first Indian woman in space was Kalpana Chawla

183 The revolver was invented by Samuel Colt

184 The refrigerator was invented by J.Perkins

1. Which instrument is used to measure pressure?a. Saccharimeterb. Ammeterc. Manometerd. Lactometer

2. What does Angstrom measure?a. Quantity of liquidb. Length of light wavesc. Length of cablesd. Speed of ships

3. Light year is related toa. Energyb. Speedc. Distanced. Intensity

4. Which of the following instruments is used to measure pressure of gases?a. Barometerb. Manometerc. Ammeterd. None of these

5. Joule is the unit ofa. Temperature pressureb. Energyc. Heat

6. How many Dynes are there in one gram weight?a. 900b. 375c. 981d. 250


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a. Newtonb. Daltonc. Copernicusd. Einstein

14. Alexander Fleming discovereda. Penicillinb. X-rayc. Streptomycind. Telephone

15. Who among following invented the steam engine?a. Marconib. James Wattc. Thomas Saveryd. Wright Brothers

16. Who invented typewriter?a. Shockleyb. Pascalc. Sholesd. Waterman

17. Who discovered circulation of blood in human body?a. Edward Jennerb. Joseph Listerc. William Harveyd. Jonon Esals

18. The first attempt in printing was made in England bya. James Arkwrightb. James Wattc. William Caxtond. Isaac Newton

19. Who was the surgeon who pioneered antiseptic surgery in 1865?a. Edward Jennerb. Joseph Listerc. Henry William


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d. John Sleeman

20. The credit of inventing the television goes toa. Faradayb. Bairdc. Edisond. Marconi

21. The credit of developing the polio vaccine goes toa. Jonas Salkb. Alb E. Sabinc. Selman Waksmand. None of these

22. Mark the wrong combinationa. James Watt: Steam Engineb. A.G. Bell: Telephonec. J. L. Baird: Televisiond. J. Perkins: Penicillin

23. Choose the correct combinationa. Typewriter: Remingtonb. Dynamite: Dunlopc. Evolution: Darwind. Aeroplane: Harway

24. Who invented the ball point pen?a. Watermanb. Oscarc. Wilsond. Lazlo Biro

25. Blaze Pascal is associated witha. Calculating machineb. Computerc. Cinema


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d. Tissues

32. Meteorology is the science ofa. Weatherb. Meteorsc. Metalsd. Earthquakes

33. Oncology is the study ofa. Birdsb. Cancerc. Mammalsd. Soil

34. Study of life in outer space is known asa. Endobiologyb. Exobiologyc. Enterobiologyd. Neobiology

35. Numismatics is the study ofa. Coinsb. Numbersc. Stampsd. Space

36. Eugenics is the study ofa. Altering humans beings by changing their genetic componentsb. People of European originc. Different races of mankindd. Genetics of plants

37. Ornithology is thea. Study of bonesb. Study of birdsc. Study of smells


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d. None of these

38. Who invented the Doctors thermometer?a. Fahrenheitb. Edisonc. Galileod. None of these

39. The velocity of light was first measured bya. Einsteinb. Newtonc. Romerd. Galileo

40. Who proposed the chemical evolution of life?a. Darwinb. Lammarckc. Oparind. Haechel

41. The telephone was invented bya. John Logie Bairdb. Alexander Graham Bellc. Thomas Elva Edisond. James Watt

42. Who among the following evolved the concept of relationship between mass and energy?a. Einsteinb. Planckc. Daltond. Rutherford

1. Robert Koch worked ona. Tuberculosisb. Cholerac. Malaria


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d. Diabetes

2. Who discovered Uranus?a. Herschelb. Ganleoc. Copernicusd. None of these

3. Who among the following is associated with the invention of computers?a. Edisonb. Babbagec. Mac Millend. Rangabhashyam

1. c 2. d 3. c 4. a 5. b

6. c 7. c 8. d 9. c 10. d

11. d 12. a 13. b 14. a 15. c

16. a 17. b 18. c 19. c 20. c

21. c 22. b 23. b 24. a 25. d

26. c 27. d 28. a 29. c 30. c

31. d 32. a 33. b 34. c 35. a

36. b 37. b 38. a 39. a 40. b

41. a 42. c 43. c 44. b 45. a

46. d 47. c 48. a 49. a 50. b


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