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Everyday Science — Study View: Questions and Answers

S#QuestionAnswer
1In which system of units, gas bills are charged?BTU
2When water is filled in a bottle and is allowed to freeze, the bottle breaks becauseWater expands on freezing
3Pituitary gland is located just below theBrain
4A mobile phone sends and receives messages throughRadio waves
5Which one of the following would give the highest energy per gram?Fats
6Trachoma is a disease of theEye
7Most of the ozone in the atmosphere is concentrated in theStratosphere
8In eye donation, which one of the following parts of donor's eye is utilized?Cornea
9The amount of energy required by the children of age between one to three years is600 K Calories
10During a total solar eclipse there is most likely to beA decrease in the rate of photosynthesis
11Vinegar is prepared by theFermentation of rotten grapes.
12All forms of energy that we use are ultimately transformed intoHeat energy
13T.V transmission cannot cover a very large area becausethe shape of the earth is spherical
14The sky appears blue because the earth's atmosphereReflects blue light
15The satellites which revolve in such an orbit, so that they move with earth rotation are calledGeo-stationary satellites
16A man is standing on a weighing machine in a lift which is moving. The weighing machine will show MINIMUM reading when, the lift is movingIn a free fall due to failure of the lift mechanism
17Acid rain contains high levels ofSulphuric and nitric acids
18Silica is used inGlass making
19The muscles, tissues and blood all are made up ofProteins
20Steel is more elastic than rubber becauseRatio of stress to strain is more
21Which one of the following sets of colour combinations is added in colour vision in TV?Red, green and blue
22Detergents dissolved in water help in cleaning clothes byReducing the surface tension of water
23Which gas is commonly used in balloons and airships?Helium
24Wisdom teeth normally grow between the age of17-35
25If a U-238 nucleus splits into two identical parts, the two nuclei so produced will beRadioactive
26Mother's milk lacks: 1. Vitamin C 2. Proteins 3. Sodium 4. Iron1 and 4
27The second most abundant metal found in the earth's crust isIron
28Heating element of an electric heater is made up ofNichrome
29Which one of the following is the main culprit in the thinning of Ozone layer in the earth's stratosphere?Nitrogen oxides
30What is 'Stealth Technology'?A coating which reduces the visibility of an aircraft on a radar
31The major part of natural gas, petroleum and coal consist ofMethane
32Three dimensional image formed by laser is calledHologram
33An iceberg is floating in sea. How much of its mass will remain above the surface of water?One tenth
34A man weighing 96 kg consists of approximately ___ litres of water66.5 litres
35The amount of energy in wheat is348 K Calories / 100 gm
36Bats can also fly in dark because they are capable of taking the help ofUltrasonic Waves
37The penetration of x-rays through an object depends upon the object'sDensity
38After drinking contaminated water, you would be most apt to develop symptoms ofTyphoid fever
39The human blood is divided intoFour groups
40Which one of the following colours has the longest wavelength?Red
41The most abundant element in Earth's crust isOxygen
42One gram of carbohydrates give energy of the amount4.1 K Calories
43A person of which of the following blood group is called a universal donor?O
44Deficiency of chloride cause the impaired growth inInfants
45Units of electricity consumed by 2500 watt air-conditioner in one hour are2.5 units
46Steering of a car involvesA pair of forces acting along the same line and in opposite direction
47A satellite moving round the earth with a uniform speed hasUniform acceleration
48A man can survive without food for at least21 days
49What amount of fats give energy of 9.3 K Calories?1.0 gram
50Which one of the following units represents the largest amount of energy?Calorie