01.Large astronomical telescopes always use as objective- combinations of lenses
02.Supersonic plane fly with the speed - greater than the speed of sound
03.A weather balloon is not fully inflated on the ground because- The air inside the balloon expands as it rises and may burst
04.If the speed of rotation of the earth increases, weight of the body- Decreases
05.Which of the following properties generally found in non-metals - Brittleness
06.Acceleration is the rate of change of - Velocity
07.A transistor is most likely to be found in a - Hearing aid
08.Otis invented - Lift
09.Sprayer functions on – Bernoulli’s principle
10.What CNN Stands for - Cable News Network
11.Hydrogen spectrum was first explained by - Niels Bohr
12.A lighted candle sets extinguished when covered with a tumbler because of – Inadequate supply of air
13.The Baily’s beads effect is a feature of - Solar eclipse
14.Impure water boils at a temperature Above 100° C
15.The time period of a pendulum on moon- Increases
16.In which one of the following places, the boiling point of water is the highest -Dead sea
17.The unit of electric charge is- Coulomb
18.Glass is best described as- Super cooled liquid
19.Fermionic condensates is ......th form of matter - 6
20.A radar that detects the presence of an enemy aircraft uses- Radio waves
21.Insulators are substances with- Radio waves
22.The rays which cause sun burn are- Ultra violet
23.Sound does not pass through - Vacuum
24.Which is Ramanujan number -1729
25.The smallest unit in computer memory - Bit
26.Force between different type of molecules - Adhesion
27.Spectacles used for viewing 3-dimensional films have- Bifocal lens
28.Fog heavily laden with smoke is -Smog
29.The phenomenon of splitting of light into its constituents- Dispersion
30.Which light has the longest wavelength - Red
31.Which light has the shortest wavelength - Violet
32.The surface that absorbs all the colors in the spectrum will be seen as - Black
33.The surface that reflects all the colors in the spectrum will be seen as - White
34.What is the color of light used in automobiles during snow fall - Yellow
35.A red flower in blue light will be seen as - Black
36.The speed of light is ...... km/s -3 lakh
37.In the equation, E=MC2, 'C’ stands for - Velocity of light
38.Particles faster than light – Tachyons
39.The gas formed when Potassium permanganate is heated- Oxygen
40.The pungent smell emitted while scratching the match box - Sulphur dioxide
41.The gas formed in Sun as the result of nuclear fusion – Helium
42.What is the colour of ozone - Blue
43.Which metal is called 'White Gold’ - Platinum
44.Which metal has the symbol 'Hg’ - Mercury
45.The metal used to make the nib of fountain pens - Iridium
46.The name 'Aurum’ is related to the metal - Gold
47.The substances added to ore to remove impurities is called - Flux
48.Which is known as 'the metal of hope’ - Uranium
49.Which can be used to absorb neutrons to control the chain reaction during nuclear fission - Boron
50.The colour of pure diamond - Colourless
51.When water itself combines chemically with some element or mineral is called - Hydration
52.Who formulated the system of pH value - Sorenson
53.Bronze is an alloy of Copper and ...... - Tin
54.Chocolate contains Lead and....... - Nickel
55.Bauxite is the ore of - Aluminium
56.Vanaspathi is prepared by passing .......through Vegitable oil – Hydrogen
57.Endosulfan is a - Insecticide
58.The chemical name of Common Salt - Sodium Chloride
59.The first Trans Uranic element - Neptunium
60.Most chemically reactive element - Flourine
61.Heavy water is used in - Nuclear reactors
62.Sodium imparts ..... colour to flames - Yellow
63.If the pH value of a substance is below 7 , it is - Acid
64.The process used in dairies to separate cream from milk is- Centrifugation
65.Which of the following is not present in pure sugar- Nitrogen
66.Phosphorus finds important use in _____ industry.- Fertilizer
67.Radio Carbon dating was discovered by- Willard Franck Libby
68.Development of unpleasant smell and taste in oil and fat containing food items due to oxidation of atmospheric oxygen is called - Rancidity
69.The element used for radiographic imaging -Barium
70.An anti-oxidant often added to fat containing foods to prevent rancidity - Butyrated hydroxi anisole
71.Which of the following insoluble in water - Silver Chloride
72.An example of mineral acid- Silver Chloride
73.The most abundant type of coal - Bituminous
74.Pigments obtained from plants can be separated by Chromatography
75.Potassium permanganate is used to purify water. Which among the following properties of it helps in this action - Oxidising
76.What type of reaction is in the digestion of food in human body - Decomposition
77.Which of the following is called the 'Mother of Pearl’ - Nacre
78.Impure iron – Pig iron
79.It is easily noticed the smell of the LPG gas because- Ethayl mercaptane
80.Teflon, the tough and fire resistant polymer, containing the halogen - Flourine
81.Froth and foams are examples of - Gas suspended in liquid
82.The discomfort due to indigestion can be cured by taking - Baking soda
83.Chemical properties mostly resemble those of - Barium
84.If rubbing vinegar on the stung area of the skin gives relief, then the person has been stung by - Wasp
85.The largest diamond - Cullinan
86.Which among the following qualities of iron is best based upon iron content - Magnatite
87.Spoilage of potato chips is prevented by packing them in plastic bags in an atmosphere of - Nitrogen
88.Which among the following metal is used in railroad flares - Strontium
89.The process by which tea leaves are separated from prepared tea is called- Filtration
90.All alloy of ———— with any other metal is known as Amalgum - Mercury
91.Which one of the following is used as moderator in nuclear reactor – Graphite
92.Chlorine was discovered by - Carl Scheele
93.Who categorised elements according to atomic number - Mosley
94.Beryllium Aluminium Silicate is known as Emerald
95.Methanoic acid is the another name of- Formic acid
96.The first organic compound prepared in laboratory - Urea
97.The isotope used for the treatment of Cancer - Cobalt-60
98.Kovar is an alloy of Iron and————- - Cobalt
99.Sir Humphry Davy discovered- Sodium
100.A natural fertilizer - Compost
Comments
Post a Comment