Science Gk For SSC CGL

Hello sir, myself vikas, sir I am preparing for the staff selection commission recruitment cgl . Can you plz provide me the general knowledge questions of science and technology

[Arun Vats]

Hello buddy as you said that you are preparing for the staff selection commission recruitment cgl. Here I am providing you the general knowledge questions of (science) or other and I am giving a link at the bottom of page for more paper. good luck for your preparations

Here are some physics related questions
1. Which of the following measurements is not a unit of distance?
A. Ammeter
B. Cubit
C. Parsec
D. angstrom
2. Which one of the following remains constant while throwing a ball upward?
A. Displacement
B. Kinectic energy
C. Acceleration
D. Velocity
3. Pure water freezes at what temperature?
A. 47 F
B. 32 F
C. 0 F
D. 19 F
4. Which vitamin is abundant in citrus fruits?
A. Vitamin A
B. Vitamin B
C. Vitamin C
D. Vitamin D
5. Zinc Oxide is
A. Acidic
B. Basic
C. Neutral
D. Amphoteric
6. Water is a _____________ Conductor of electricity.
A. super conductor
B. bad conductor
C. speed conductor
D. None of these
7. What element’s three isotopes have different names?
A. Helium
B. Oxygen
C. Carbon
D. Hydrogen
8. On which one of the following conservation laws, does a rocket work?
A. Mass
B. Energy
C. Linear momentum
D. Angular momentum
9. Which one among the following radiations carries maximum energy?
A. Ultraviolet rays
B. Gamma rays
C. X- rays
D. Infra red rays

10. The Central Arid Zone Research Institute (CAZRI) is located at
A. Jaipur
B. Jodhpur
C. Jaisalmer
D. Jallandhar

11) Which of the following is not a chemical fertilizer?
A) Super phosphate
B) Potassium nitrate
C) Sodium sulphate
D) Urea

12) The venom of Cobra is ?
A) Neurotoxic
B) Haemotoxic
C) Both (A) and (B)
D) None of the above

13) Which gas is filled in refrigerators?
A) Chlorofluorocarbon
B) Ethane
C) Methane
D) Acetylene

14) Which of the following is the best conductor of electricity?
A) Cold water
B) Saline water
C) Distilled water
D) Warm water

15) Which one of the following is used as a moderator in a nuclear reactor?
A) Radium
B) Thorium
C) Heavy water
D) Ordinary water

16) Which of the following is also known as laughing gas?
A) Nitrogen dioxide
B) Nitrogen tetraoxide
C) Nitrogen trioxide
D) Nitrous oxide

17) Which of the following Chemicals is used for fruit ripening?
A) Calcium carbide
B) Potassium chloride
C) Sodium chloride
D) Sodium carbonate

18) Which one of the following is an air pollutant gas and is released by burning of fossil fuel?
A) Hydrogen
B) Sulphur dioxide
C) Oxygen
D) Nitrogen

19) What is the main constituent of a Pearl?
A) Calcium carbonate and magnesium carbonate
B) Calcium oxide and calcium sulphate
C) Calcium sulphate only
D) Calcium carbonate only

20) Which one among the following elements/ions is essential in small quantities for development of healthy teeth butt causes mottling of the teeth if consumed in higher quantities?
A) Chloride
B) Fluoride
C) Potassium
D) Iron

21) Contact lenses are made from?
A) Polystyrene
B) Lucite
C) Polyvinyl chloride
D) Teflon

22) Which one among the following metals is used for making boats because it does no corrode by sea water?
A) Titanium
B) Iron
C) Tungsten
D) Nickel

23) Which one among the following is a strong smelling agent added to LPG cylinder to help in the detection of gas leakage?
A) Ethanol
B) Chloroform
C) Methane
D) Thioethanol

24) Which one among the following substances evolves heat when dissolved in water?
A) Sodium chloride
B) Glucose
C) Potassium nitrate
D) Calcium oxide

25) Photo-chemical smog occurs in?
A) cool, dry and sunny climate
B) warm and humid climate
C) warm, dry and sunny climate
D) cool and humid climate

26) Dead organs are generally stored in formalin. Formalin is?
A) aqueous formaldehyde
B) aqueous formic acid
C) aqueous ferric alum
D) aqueous ferrous sulphate

27) When items of jewellery made of metals such as copper or nickel are placed in a solution having a salt of gold, a thin film of gold is deposited by?
A) heating above 100 degree Centigrade
B) passing an electric current
C) just keeping it for 10 minutes
D) cooling to below 0 degree Centigrade

28) Rainwater collected after 30 to 40 minutes of raining is not suitable for drinking because it?
A) contains bacteria and dirt
B) is acidic
C) contains dissolved toxic chemicals
D) is deficient in minerals

29) Glass is actually a?
A) a crystalline solid
B) an elastic solid
C) an ionic solid
D) a vitrifies liquid

30) Which one among the following methods is not effective in removing arsenic from contaminated ground water?
A) Ion exchange
B) Boiling
C) Coagulation-adsorption
D) Reverse osmosis

31) Which one of the following is used as an explosive?
A) Nitroglycerine
B) Graphite
C) Mercuric oxide
D) Phosphorus trichloride

32) Acute lead poisoning is also known as?
A) Plumbism
B) Neuralgia
C) Itai-itai
D) Byssinosis

33) The major component in the LPG is?
A) ethane
B) propane
C) methane
D) butane

34) The most reactive among the halogens is?
A) Fluorine
B) Iodine
C) Chlorine
D) Bromine

35) The electronic configuration of an atom having atomic number '20' is?
A) 2, 6, 8, 4
B) 2, 8, 8, 2
C) 2, 10, 8
D) 2, 8, 10

36) When water itself combines chemically with some element or mineral it is called?
A) Desiltation
B) Oxidation
C) Hydration
D) Carbonation

37) A solution of zinc chloride cannot be stored in a vessel made of?
A) Lead
B) Gold
C) Aluminium
D) Silver

38) If the current and the voltage are out of phase by 90 degree, then the power is?
A) Maximum
B) Minimum
C) Zero
D) None of the above

39) The forward resistance of a diode is?
A) Very small
B) Very large
C) Infinity
D) Zero

40) Which type of reaction produces the most harmful radiation?
A) Fission reaction
B) Fusion reaction
C) Photo-Chemical reaction
D) Chemical reaction

41) The velocity of sound is maximum in?
A) Air
B) Liquid
C) Vacuum
D) Metal

42) When you pull out the plug connected to an electrical appliance, you often observe a spark. To which property of the appliance, is this related?
A) Inductance
B) Capacitance
C) Wattage
D) Resistance

43) The focal length of a convex lens is?
A) the same for all colours
B) maximum for yellow light
C) shorter for blue light than for red
D) shorter for red light than for blue

44) When a ball drops on to the floor it bounces. Why does it bounce?
A) Floor exerts a force on the ball during the impact
B) Newton's third law implies that for every action there is an equal and opposite reaction
C) The floor is perfectly rigid
D) None of the above

45) A body has a mass of 6 kg on the Earth; when measured on the Moon, its mass would be?
A) less than 6 kg
B) 6 kg
C) less than 1 kg
D) Zero

46) Transformer is a kind of appliance that can 1. increase power 2. increase voltage 3. decrease voltage 4. measure current and voltage Select the correct answer using the code given below:
A) 1 and 4
B) 1 only
C) 3 and 4 only
D) 2 and 3 only

47) Which of the following is used for correcting myopic eyes?
A) Cylindrical Lens
B) Convex Lens
C) Concave Lens
D) None of the above

48) The sky appears blue due to?
A) Refraction of light
B) Diffraction of light
C) Reflection of light
D) Scattering of light

49) Decibel unit is used to measure?
A) Sound intensity
B) Light intensity
C) Magnitude of Earthquake
D) None of the above

50) What does an air conditioner installed in a room control?
A) Temperature only
B) Humidity and temperature only
C) Pressure and temperature only
D) Humidity, pressure and temperature

51) The minimum height of a plane mirror to see the full image of a person is equal to?
A) the height of the person
B) half the height of the person
C) one-fourth the height of the person
D) double the height of the person

52) Which one among the following will you put in to pure water in order to pass electric current through it?
A) Lemon Juice
B) Kerosene
C) Mustard oil
D) Sugar

53) In the case of nuclear disaster, which of the following options for cooling the nuclear reactors may be adopted? 1. Pumping of water to the reactors. 2. Use of boric acid. 3. Taking out the fuel rods and keeping them in a cooling pond. Select the correct answer using the code given below:
A) 1, 2 and 3
B) 1 and 3 only
C) 3 only
D) 1 and 2 only

54) A close bottle containing water at room temperature is taken to the Moon and than the lid is opened. The water will?
A) freeze
B) boil
C) decompose into oxygen and hydrogen
D) not change at all

55) The blackboard seems black because it?
A) reflects black colour
B) absorbs black colour
C) reflects every colour
D) does not reflect any colour

56) A body is charged negatively. It implies that?
A) it has acquired some electrons from outside
B) it has lost some of its electrons
C) it has lost some of its protons
D) None of these

57) A devastating Cloud Burst swept over Leh in August 2010. Which one of the following statements with regard to Cloud Burst is not correct?
A) Cloud Burst is a localised weather phenomenon representing highly concentrated rainfall over a small area in a short duration of time
B) Cloud Burst occurs only in hilly areas
C) Cloud Burst occurs due to upward movement of moistureladen air with sufficient rapidity to form cumulonimbus clouds
D) There is no satisfactory technique till now for predicting Cloud Burst

58) In scuba-diving, while ascending towards the water surface, there is a danger of bursting the lungs due to?
A) Gay-Lussac’s law of combining volumes
B) Graham’s law of diffusion
C) Archimedes’ principle
D) Boyle's law

59) Most of the communication satellites today are placed in a geostationary orbit. In order to stay over the same spot on the Earth, a geostationary satellite has to be directly above the?
A) Tropic of Capricorn
B) Tropic of Cancer
C) Equator
D) Prime Meridian

60) Viewfinders, used in automobiles to locate the position of the vehicles behind, are made of?
A) plain mirror
B) parabolic mirror
C) convex mirror
D) concave mirror

61) Why do you feel cool under a tree but not so under a tin shed on a sunny day?
A) The leaves give out water which vapourises absorbing some heat as latent heat
B) Photosynthesis absorbs heat
C) The leaves convert water vapours into water which is a heat-absorbing process
D) The greenness of the tree gives the cool feeling

62) Which one among the following would expand the most on being heated?
A) Glass
B) Air
C) Alcohol
D) Water

63) If a ship moves from freshwater into seawater, it will?
A) rise a little higher
B) sink a little bit
C) remain unaffected
D) sink completely

64) Mr.X was advised by an architect to make outer walls of his house with hollow bricks. The correct reason is that such walls?
A) make the building stronger
B) prevent seepage of moisture from outside
C) protect the building from lightning
D) help keeping inside cooler in summer and warmer in winter

65) Water is a good coolant and is used to cool the engines of cars, buses, trucks, etc. It is because water has a?
A) low specific heat
B) high specific heat
C) high boiling point
D) low surface tension

66) Which one among the following statements is correct?
A) Convex mirrors are used as reflectors
B) Convex mirrors should be used as shaving
C) Convex mirrors are used by doctors to examine oral cavity
D) Concave mirrors are used as reflectors

67) The pH of fresh groundwater slightly decreases upon exposure to air because?
A) the dissolved carbon dioxide of the groundwater escapes into air
B) the dissolved oxygen of the groundwater escapes into air
C) oxygen from air is dissolved in the water
D) carbon dioxide from air is dissolved in the water

68) Age of fossil may be found out by determining the ratio of two isotopes of carbon. The isotopes are?
A) C-12 and C-14
B) C-12 and C-13
C) C-13 and C-14
D) C-12 and carbon black

69) Which one among the following statements is correct?
A) All bases are alkalis
B) There are no more bases except the alkalis
C) All alkalis are bases but all bases are not alkalis
D) None of the bases is alkali

70) Which one of the following reactions is the main cause of the energy radiation from the Sun?
A) Fusion reaction
B) Fission reaction
C) Chemical reaction
D) Diffusion reaction

71) Which was mainly responsible for the Bhopal Mishap in 1984?
A) Ammonia
B) Methyl Isocyanate
C) Carbon mono-oxide
D) Carbon dioxide

72) The product used for manufacturing of Industrial alcohol is?
A) Molasses
B) Khandasari
C) Paper-pulp
D) Bagasse

73) Bleaching powder is used in drinking water as a/an?
A) antiseptic
B) coagulant
C) disinfectant
D) antibiotic

74) The single acid which dissolves gold is?
A) Nitric acid
B) Aqua regia
C) Selenic acid
D) Hydrochloric acid

75) Rectified spirit is a?
A) mixture of 95% ethanol + 5% pyridine
B) mixture of 95%, ethanol + 5% methanol
C) mixture of 95% ethanol + 5% H2O
D) 100% ethanol

76) Electrostatic precipitator is used to control?
A) Radio-active Pollutants
B) Air Pollutants
C) Water Pollutants
D) Chemical Pollutants

77) The immediate source of energy for all cellular activity, including the contraction of muscle fibers is?
A) ATP
B) RNA
C) FAD
D) NAD

78) The part of the cell which is essnetial for protein synthesis is?
A) Golgi bodies
B) Ribosomes
C) Chromosomes
D) Chloroplast

79) Which of the following is an exception to “Cell Theory”?
A) Lichens
B) Fungi
C) Bacteria
D) Virus

80) Cell theory was propounded by?
A) Robert Hooke
B) William Harvey
C) Schleiden and Schwann
D) R.Virchow

81) Cholera Bacillus was discovered by?
A) Robert Koch
B) Joseph lister
C) Ronald Ross
D) Louis Pasteur

82) Gene was first isolated by?
A) J. C. Bose
B) Hargobind Khurana
C) S. Chandrashekar
D) C. V. Raman

83) Who discovered Insulin?
A) William Harvey
B) Madam Curie
C) Alexander Flemming
D) Frederick Banting

84) For which one among the following diseases there is no vaccine till date??
A) Malaria
B) Mumps
C) Measles
D) Tetanus

85) Which of the following is not obtained from the bark of a tree?
A) Bhang
B) Quinine
C) Tannin
D) Cinnamon

86) Which of the following types of woods is specially used as railways sleepers?
A) Akashmoni
B) Jarrah and Barri
C) Teak
D) Mahogany

87) Wisdom teeth normally grow during the age of?
A) 7-11 years
B) 12-15 years
C) 17-30 years
D) 32-40 years

88) Short sightedness is due to?
A) Weaker muscles
B) Weakening of the retina
C) Shifting of the Iris
D) Elongation of eye balls

89) Alzheimer’s disase in human beings is characterised by the degeneration of?
A) Nerve cells
B) Kidney cells
C) Brain cells
D) Liver cells

90) The yellow colour of urine is due to the presence of?
A) Cholestrol
B) Urochrome
C) Bile
D) Lymph

91) Which of the following glands is situated beneath the brain and whose oversecretion produces giants-size children?
A) Pancreas
B) Adrenal
C) Pituitary
D) Thyroid

92) Transfer of genetic information from one generation to the other is accomplished by?
A) DNA
B) Messenger RNA
C) Transfer RNA
D) Both b and c

93) Chromosomes are?
A) the biggest in number in human cells
B) present only in the nucleus of a cell
C) visible in all cells at every time
D) made up of DNA as a main component

94) The unit structure of which gene is made up of is?
A) DNA
B) RNA
C) nucletides
D) Chloroplasts

95) Ready source of energy available for athletes is?
A) Carbohydrates
B) Vitamins
C) Proteins
D) Fats

96) Milk,cheese and eggs are the source of vitamins?
A) A and C
B) A and D
C) A and B
D) B and C

97) Which of the following chemicals is used for preserving fruit juices?
A) Sodium Benzoate
B) Ammonium Sulphate
C) Potassium Nitrate
D) Sodium Hydroxide

98) Mother’s milk is preferred to cow’s milk because it contains?
A) more lipids and less fats
B) less fats and less lipids
C) more fats and more lipids
D) more fats and less lipids

99) Which of the following cell organelles function as the power house of a living cell?
A) Ribosome
B) Chloroplast
C) Mitochondria
D) Golgi apparatus

100) Which among the following is not a true fruit?
A) Date
B) Apple
C) Plum
D) Grapes

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