Everyday Science Oneliner MCQS 11

• Charcoal is made by heating wood.
• In blood, the percentage of water is 90%.
• As the temperature of ice rises, the ice melts and its density increases.
• Water is a universal solvent for Biochemical Reactions.
• The temperature of the water below the solid ice layer is 4 degree centigrade.
• The volume percentage of nitrogen in air is 78%.
• The composition of oxygen in air is kept constant by the process of Photosynthesis.
• Nitrogen occurs in plants and animals in the form of Protein.
• Air contains volume of carbon dioxide approximately 0.03%.
• The gases which are used by divers as an artificial atmosphere are helium and oxygen.
• Noble gases are extremely unreactive.
• The second most abundant metal found in the earth’s crust is Iron.
• The iron content in plant tissue is normally between 50-250ppm.
• Chernobyl nuclear reactor lies in Russia.
• Chernobyl nuclear plant was destroyed in 1986 due to Failure of cooling system.
• Radioactive source must be kept in Lead Container.
• In Brazil alcohol is used as fuel for vehicles.
• Voltmeter can be made by modification in Galvanometer.
• The device used for the measurement of current, voltage and resistance is AVO meter.
• In the name of multimeter “AVO”, V stands for Voltage.
• Silicon is a Semiconductor.
• Paper is an insulator.
• For sending sound waves at large distance, Radio Waves are used.
• The carrier waves used for the radio transmission have the frequency up to 30 KHz.
• Video camera is used to convert Picture into electrical signals.
• In a colour television, the colours are green, red and blue.
• The waves used for sending signals to the satellite from ground station are Micro Waves.
• First telegraph signal was transmitted in 1901.
• In a telephone receiver, Magnet is placed under the diaphragm.
• Nowadays, the international communication and transmission is being done through the waves known as Microwaves.
• Modern Bicycle was invented by Staley.
• Coulomb is the unit of Electric Charge.
• For certain reasons, some people develop cloudy areas in one or both lenses. This defect is called Cataract. 
• In order to prevent the corrosion of iron pipes they are often coated with a layer of zinc. This process is termed asGalvanization.
• In a reactor, cadmium rods re used for Absorbing Neutrons.
• Detergents dissolved in water help in cleaning clothes by reducing the surface tension of water.
• The swing of a spinning cricket ball in the air can be explained on the basis of Bemoulli’s Theorem.
• The absorption of ink by blotting paper involves Capillary Action phenomenon.
• Materials for rain proof coats and tents owe their water proof properties to Surface Tension.
• For being able to see three-dimensional pictures we have to use An Epidiascope.
• Water has maximum density at 4 degree centigrade.
• The highest recorded air temperature in the world in degree Celsius is 57.
• The instrument that measures wind speed is the anemometer.
• The theory of expanding Universe was first propounded by Hubble.
• Used tea leaves contain Quinine.
• Bat has the highest upper limit of audible range.
• “Hotline” is A telecommunication link between the rulers of countries.
• Most of the ozone is concentrated in the Stratosphere.
• The cow’s milk contains 80% of water in terms of percentage.
• Numismatics is the study of Coins.

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