General Science1

1.What are soaps ?

1. Esters of heavy fatty acid
2. Sodium or Potassium salts of heavy fatty acids
3. Sa;ts of silicates
4. Mixture of glycerol and alcohols

Answere

b.Sodium or Potassium salts of heavy fatty acids

2.A Fertilizer contains which of the following ?
1,Nitrogen 2,Potassium 3,Phosphorus

1. 1 only
2. 1 and 2 only
3. 2 and 3 only
4. 1,2 and 3

Answere

d.1,2 and 3

3.At what temperature in C degree the readingsof Farenheit scale will be five time that of the readings of Celcius scale ?

1. 10
2. 25
3. 38
4. 40

Answere

a.10

4.Which does not fit the set of choices ?

1. Epicentre
2. Isohalines
3. Ricter scale
4. Tectonic forces

Answere

b.Isohalines

5.What is Nusmismatic ?

1. Study of old manuscript
2. Study of coins and metals
3. Study of Palm Leaves
4. Study of copper plates

Answere

b.Study of coins and metals

6.Which one of the following is used as a neutron moderator in nuclear reactors ?

1. Graphite
2. Zinc
3. Radium
4. Thorium

Answere

a.Graphite

7.Carbon,diamond and graphite are together called

1. Isomers
2. Isomorphs
3. Isotopes
4. Allotrophes

Answere

d.Allotrophes

8.On which of the following factors does the temperature of steam in a pressure cooker depend ?

1. Material of which cooker is made
2. Temperature of the flame
3. Quantity of cooking material
4. Size of the pressure cooker

Answere

d.Size of the pressure cooker

9.RDX is

1. an instrument to measure blood pressure
2. an explosive
3. a gene
4. a chemical used in the manufacture of fertilizer

Answere

b.an explosive

10.Which one of the following is as air pollutant present in environment ?

1. Oxygen
2. Nitrogen
3. Carbon monoxide
4. Hydrogen

Answere

c.Carbon monoxide

11.Telescope is used for

1. measuring minutes details
2. observing distant objects
3. observing small objects
4. measuring time

Answere

b.observing distant objects

12.Glass is made of

1. sand and salt
2. sand and alkali
3. quartz and Mica
4. None of these

Answere

b.sand and alkali

13.Pure gold is

1. as hard as steel
2. softer than steel
3. harder than steel
4. None of these

Answere

b.softer than steel

14.Of the following which travels faster than air ?

1. Sound
2. Light
3. Aeoplane
4. Rocket

Answere

b.Light

15.What elements combine to form water ?

1. Oxygen and Carbon dioxide
2. Hydrogen and Oxygen
3. Hydrogen and Nitrogen
4. None of these

Answere

b.Hydrogen and Oxygen

16.Air is

1. Nothing but Oxygen
2. nothing but nitrogen
3. the mixture of oxygen,nitrogen and other gases
4. the mixture of oxygen and nitrogen only

Answere

c.the mixture of oxygen,nitrogen and other gases

17.The normal temperature of human body in normal health is

1. 96 degree F
2. 98 degree F
3. 98.4 degree F
4. 96.4 degree F

Answere

c.98.4 degree F

18.It is recommended that a liquid Amkonia bottle should be opened after cooling it in ice,because liquid ammonia

1. is extremely corrosive
2. has a high vapour pressure
3. is unstable
4. brings tears to the eyes

Answere

c.is unstable

19.A material,that allows partial transmission of incident light,is called

1. Semi-permeable
2. Transparent
3. translucent
4. Transducer

Answere

c.translucent

20.An ice cube is floating in a glass of water .How will the water level in the glass be affected which the ice cube melts ?

1. The level of water will go up
2. The level of water will go down
3. The level of water will remain unchanged
4. In the beginning the level of water will go up but later on the level will go down.

Answere

c.The level of water will remain unchanged

21.Cooking gas cylinders placed on the top floor cause more fire hazard on leakage to the lower floors,because LPG is

1. Lighter than the air
2. Heavier than the air
3. carried away by the blasted pieces
4. Attracted by the flame

Answere

b.Heavier than the air

22.Uncontrolled industrialization leads to acid rain.It is mainly contributed by

1. methane gas
2. Chloroflurocarbons
3. Nitrous and sulphur dioxide
4. Carbon dioxide

Answere

c.Nitrous and sulphur dioxide

23.Detergents used for cleaning cloth and utensils contain

1. Sulphates
2. Nitrates
3. Sulphonates
4. Bismuthales

Answere

c.Sulphonates

24.Diamond is an alltropic form of

1. Silicon
2. Selenium
3. Carbon
4. Manganese

Answere

c.Carbon

25.The metal used in a storage battery is

1. Copper
2. Iron
3. Lead
4. Zinc

Answere

d.Zinc

26.The process of removing hardness of water is called

1. Purification
2. Distillation
3. Sublimation
4. Softening

Answere

d.Softening

27.Bleaching powder is an oxychloride of

1. Magnesium
2. Manganese
3. Calcium
4. Zinc

Answere

c.Calcium

28.Carbon is a

1. Metal
2. Metalloid
3. None-metal
4. None of these

Answere

c.None-metal

29.Stainless steel is

1. a metal
2. a compound
3. a mixture
4. an alloy

Answere

c.a mixture

30.Device used to rectify farsightedness is

1. Concave lens
2. Convex lens
3. Spherical lens
4. Plane glass

Answere

b.Convex lens

31.Long distance photography is facilitated by

1. Infra red rays
2. Ultraviolet rays
3. Visible light
4. X-rays/li>

Answere

a.Infra red rays

32.Aviation fuel for jet aeroplanes consists of purified

1. Petrol
2. Diesel
3. Kerosene
4. Gasoline

Answere

d.Gasoline

33.The device that separates light into component wavelengths is

1. Interferometer
2. Photometer
3. Polarimeter
4. Spectrometer

Answere

d.Spectrometer

34.Which one of the following materials is the best conductor of electricity ?

1. Cooper
2. Silver
3. Gold
4. Zinc

Answere

b.Silver

35.A man cannot see objects distinctly at a distance of less than 1 meter.He is suffering from ?

1. old-age sight
2. short-sightedness
3. opaqueness of lens
4. long-sightedness

Answere

d.long-sightedness

36.Pouring of kerosene oil on stagnant water reduces the mosquito problem because it

1. is highly toxic to the mosquitoes
2. repels the mosquitoes
3. interrupts the breathing of larvae
4. interrupts the mating of adults

Answere

c.interrupts the breathing of larvae

37.Fruits are made to hasten the process of ripening by exposing them to gas

1. Sulpher dioxide
2. Carbon dioxide
3. Oxygen
4. Ethylene

Answere

d.Ethylene

38.Synthetic fibre is

1. Wood
2. Acrylic
3. Cotton
4. Silk

Answere

b.Acrylic

39.The gas predominantly responsible for global worming is

1. Carbon dioxide
2. Carbon monoxide
3. Nitrous oxide
4. Nitrogen peroxide

Answere

a.Carbon dioxide

40.Which of the following is the ore of Iron ?

1. Haematite
2. Smaltite
3. magnatite
4. bauxite

Answere

a.Haematite

41.Hardness of water is caused by the soluble salt of

1. Sodium
2. Calcium
3. Potassium
4. Nitrogen

Answere

b.Calcium

42.Brass is an alloy of

1. Copper and Nickel
2. Zinc and Nickel
3. nickel and Silver
4. Zinc and copper

Answere

b.Zinc and Nickel

43.Potential energy is the due to

1. body motion
2. Position of a body
3. mass of the body
4. state of the body

Answere

b.Position of a body

44.When a stone is whirled around at the end of a string,the pull of the strung on the stone is called

1. Centrifugal force
2. Frictional force
3. Gravitation force
4. Centrifugal force

Answere

a.Centrifugal force

45.Velocity of a body is defined as

1. change of its position
2. rate of change of its position in a definite direction
3. change of its position in a definite direction
4. rate of change of its position

Answere

b.rate of change of its position in a definite direction

46.Which one of the following is not a dimensionless quantity ?

1. Strain
2. Relative density
3. Frequency
4. Angle

Answere

c.Frequency

47.The hydraulic brakes used in automobiles is a direct application of

1. Bernoullis theorem
2. Archimedes Principle
3. Toricellian Law
4. Pascal's Law

Answere

d.Pascal's Law

48.The principle of working of periscope is based on

1. reflection only
2. refraction only
3. reflection and refraction
4. reflection and interference

Answere

a.reflection only

49.Heating a magnet will

1. weaken it
2. strengthen it
3. reverse its polarity
4. have no effect.

Answere

a.weaken it

50.Which one of the following is a chemical change ?

1. Melting of ice
2. Burning of Sulphur
3. Melting of wax
4. Magnetisation of iron

Answere

b.Burning of Sulphur

51.Which one of the following is not a compound ?

1. Red lead
2. Black lead
3. Silica
4. Slaked lime

Answere

b.Black lead

52.Which of the following substance is used as a lubricant ?

1. Silica
2. Graphite
3. Diamond
4. Iron oxide

Answere

b.Graphite

53.In the preparation of soap ,the vegetable oil is subjected to

1. Catalytic hydrogenation
2. Alkaline hydrolysis
3. Aerial oxidation
4. Thermal decomposition

Answere

b.Alkaline hydrolysis

54.Detergents dissolved in water help in cleaning cloth by

1. Increasing the temperature of water
2. reacting chemically with dirt
3. reducing the surface tension of water
4. dissolving dirt

Answere

c.reducing the surface tension of water

55.Gobar gas is rich in

1. Carbon dioxide
2. Sulphur dioxide
3. Methane
4. Ammonia.

Answere

c.Methane

56.The dress made out of which of the following materials is the least danger to wear while cooking ?

1. Terylene
2. Nylon
3. Silk
4. Cotton

Answere

d.Cotton

57.Which of the following comes in the category of non-conventional source of energy ?

1. Coal
2. Petroleum
3. Natural gas
4. Biogas

Answere

d.>Biogas

58.A fluorescent tube is preferred to an electric bulb because

1. it has larger light emitting surface
2. voltage fluctuations do not affect it
3. In a tube electrical energy appliance
4. its light is not harmful to the eyes.

Answere

c.In a tube electrical energy appliance

59.Which acid in produced when milk gets sour ?

1. Butyric acid
2. Lactic acid
3. Tartaric acid
4. Acetic acid

Answere

b.Lactic acid

60.When an element vanished by burning in air,then

1. it change into energy
2. it change into gas
3. it change into compound
4. it is destroyed

Answere

c.it change into compound

61.In winter cloth keep us worm,because they

1. give extra heat to the body.
2. do not allow heat to radiate.
3. do not allow the heat of the body to come out.
4. prevent the entry of air

Answere

c.do not allow the heat of the body to come out.

62.The main factor that determines the saturation of haemoglobin with oxygen is

1. Oxygen concentration in the blood.
2. Carbon dioxide concentration in the blood.
3. pH of the blood.
4. Haemoglobin concentration in the blood.

Answere

a.Oxygen concentration in the blood.

63.The cracking sound heard when dry hair is combed with a hard rubber comb is due to

1. the hair barging against the charged comb.
2. small electric sparks.
3. the rubbing of the comb with hair.
4. None of the above.

Answere

b.small electric sparks.

64.When water boils ,its temperature

1. begins to decrease.
2. begins to increase
3. remains constant
4. fluctuates around a valve

Answere

c.remains constant

65.Lack of which of the following gases in a closed room may cause death ?

1. Nitrogen
2. Oxygen
3. Hydrogen
4. Carbon dioxide

Answere

b.Oxygen

66.Whioch of the following is responsible for the composition of bones ?

1. Calcium phosphate
2. Calcium sulphate
3. Calcium carbonate
4. Calcium chloride

Answere

a.Calcium phosphate

67.Light of which colour has the longest wavelength ?

1. Blue
2. Red
3. Green
4. Yellow

Answere

b.Red

68.Which of the following liquids is the best conductor of heat ?

1. Glycerine
2. Honey
3. Mercury
4. Water

Answere

c.Mercury

69.If the most object were doubled,its acceleration due to gravity would be

1. halved
2. doubled
3. quardrupled
4. same

Answere

d.same

70.Which gas is found in cattle-dung ?

1. Carbon dioxide
2. Methane
3. Hydrogen
4. Oxygen

Answere

b.Methane

71.Kinetic energy of a body depends upon

1. volume of the body
2. breadth of the body
3. length of the body
4. velocity of the body

Answere

d.velocity of the body

72.In dry cells,which metal is used for making negative pole ?

1. Silver
2. Zinc
3. Copper
4. None of these

Answere

b.Zinc

73.Pole of dissimilar charge is/has

1. Attraction
2. Repulsion
3. Neutral
4. None of these

Answere

a.Attraction

74.We receive the sun rays by the process of

1. Conduction
2. Connection
3. Radiation
4. None of these

Answere

c.Radiation

75.The ratio of shearing stress to shearing strain is called

1. Rigidity module
2. Young's modules
3. Conductance
4. None of these

Answere

b.Young's modules

76.Static electricity is caused by

1. Induction
2. Friction
3. Both (A) and (B)
4. None of these

Answere

c.Both (A) and (B)

77.Which one of the following can be called chemical change ?

1. Glowing of bulb
2. Conversion of water into ice
3. Rusting of iron
4. None of the above

Answere

c.Rusting of iron

78.Utensil made of which of the given metals is used for the purification of gold ?

1. Silver
2. Aluminium
3. Copper
4. None of the above

Answere

b.Aluminium

79.Which of the following is an aluminium ore ?

1. Haematite
2. Galena
3. Bauxite
4. None of the above

Answere

c.Bauxite

80.The sound waves are

1. longitudinal
2. transverse
3. Both (A) and (B)
4. None of the above

Answere

b.transverse

81.Which one of the following particles is the heaviest ?

1. Proton
2. Electron
3. Neutron
4. None of the above

Answere

c.Neutron

82.Which is the chief air pollutant ?

1. Nitrogen
2. Ammonia
3. Carbon Dioxide
4. None of the above

Answere

a.Nitrogen

83.Dew point is

1. the temperature at which a given sample of air become saturated.
2. a low pressure system in the lower atmosphere
3. Incoming solar radiation
4. amount of actual water vapour present per unit volum of air

Answere

a.the temperature at which a given sample of air become saturated.

84.Permanent hardness of water can be removed by adding

1. Bleaching powder
2. Washing soda
3. Chlorine
4. Oxygen

Answere

b.Washing soda

85.When steam is passed through red hot iron,the gas produced is

1. Water gas
2. Producer gas
3. Hydrogen
4. Oxygen

Answere

c.Hydrogen

86.Oxygen is prepared on a large scale from

1. Potassium permanganate
2. Air
3. Water
4. Sodium peroxide

Answere

b.Air

87.For extinguishing fire we use

1. Carbon monoxide
2. Hydrogen
3. Carbon dioxide
4. Marsh gas

Answere

c.Carbon dioxide

88.Which one of the following gases is used for refrigeration?

1. Phosphine
2. Sulphur dioxide
3. Ammonia
4. Chlorine

Answere

c.Ammonia

89.Diamond is an allotropic form of

1. Carbon
2. Sulphur
3. Silicon
4. Germanium

Answere

a.Carbon

90.Water decomposes Calcium Carbide with the liberation of

1. Ethane
2. Methane
3. Acetylene
4. Ethylene

Answere

c.Acetylene

91.Which one of the following is a non-metal that remains liquid at ordinary temperature ?

1. Bromine
2. Phosphorus
3. Chlorine
4. Helium

Answere

a.Bromine

92.The major air pollutant in urban atmosphere is

1. Carbon dioxide
2. Carbon monoxide
3. Nitrogen oxide
4. Sulphur dioxide

Answere

a.Carbon dioxide

93.Which of the following light waves is outside the visible spectrum ?

1. Blue
2. Violet
3. Yellow
4. Ultraviolet

Answere

d.Ultraviolet

94.When a green leaf is seen in red light , its colour will be

1. red
2. green
3. black
4. brown

Answere

d.brown

95.The importance of ozone layer is that it shields

1. plants from radiation
2. life on earth from the ultraviolet rays of the sun.
3. life on earth from cosmic bombardment.
4. earth from meteoroites

Answere

b.life on earth from the ultraviolet rays of the sun.

96.The energy from the sun comes to us due to

1. Chemical reaction.
2. Nuclear fusion
3. Nuclear fission
4. Chain reaction

Answere

b.Nuclear fusion

97.Slide Rule is used by

1. Doctors.
2. Engineers
3. Physicists.
4. Chemists.

Answere

b.Engineers

98.A mixture of water and alcohol can be separated by

1. Evaporation
2. Decantation
3. Distillation
4. Filtration

Answere

a.Evaporation

99.Which one of the following is the best insulator ?

1. Glass
2. Wood
3. Paper
4. Cloth

Answere

b.Wood

100.A chemical change occurs when

1. sulphur melts
2. wood burns
3. sugar dissolves in water
4. None of these

Answere

b.wood burns

101.Nights are cooler in the desert because

1. sand radiates heat less quick as compared to earth.
2. sand radiates heat more quickly as compared to earth.
3. the sky is generally clear.
4. the sky is generally cloudy.

Answere

b.sand radiates heat more quickly as compared to earth.

102.The material of ordinary pencil,which marks on the paper,is usually

1. Carbon
2. Lead
3. Graphite
4. Charcoal

Answere

c.Graphite

103.Enriched Uranium is

1. U-238
2. U-235
3. U-234
4. U-239

Answere

b.U-235

104.The velocity of wind is related to

1. Temperature
2. Revolution of earth
3. Rotation of earth
4. Pressure gradient

Answere

d.Pressure gradient

105.When water freeze its volume

1. remain the same.
2. increases.
3. decreases.
4. doubles.

Answere

b.increases.

106.The weight of a man on the surface of the moon is

1. same as on the earth.
2. more than on earth
3. interminate
4. less than on earth

Answere

d.less than on earth

107.A chemical that is widely used for purifying drinking water is

1. Iodine
2. Chlorine
3. Fluorine
4. Potassium permanganate

Answere

b.Chlorine