Everyday Science Oneliner MCQS 15

• When a bullet is fired upwards vertically, it gains in Potential energy.
• The mixture of Acetylene and oxygen gases is required in gas welding.
• Isobars are the lines connecting the places having same Atmospheric pressure.
• The velocity of wind is related to Pressure gradient.
• The acid present in the sour milk is Formic acid.
• The most important stimulant in tea leaves is Caffeine.
• Dolly was the name of first cloned sheep.
• The smallest living cell is that of a Mycoplasma (bacterium)
• We lose consciousness if blood flow to the brain is cut off more than 5 sec.
• Menopause usually occurs between 40 to 45 years.
• Platypus and Echidnas are the only monotremes, or mammals that lay eggs.
• Film is that part of camera which is analogue to the retina in the human eye.
• 72-80 is the average adult pulse rate.
• Magnetic resonance is the modern tool for imaging brain tumours.
• The acid used in a car battery is sulphuric acid. 
• After drinking contaminated water, you would be most apt to develop symptoms of Typhoid fever.
• In eye donation, Cornea of donor’s eye is utilized.
• Alzheimer is a disease of Brain.
• Cell was discovered by Robert Hooke.
• A body is taken from Earth to Moon. Its weight will Decreases.
• Brass is an alloy of Copper and Zinc.
• Mineral essential for the coagulation of blood is Magnesium.
• Milk is an example of Emulsion.
• Iron is the most abundant transition metal.
• Hydrometer is used to determine specific gravity of liquids.
• Convex lenses are used for the correction of Long-sightedness (Hyperopia)
• A transformer is used to Increase or decrease AC voltage.
• The stones formed in human kidney consist mostly of Calcium oxalate.
• Most of the explosions in mines occur due to the mixing of Methane with air.
• A mobile phone sends and receives messages through Radio waves.
• Fax machine receives the signal and give its output through the Printer.
• The procedure of crushing the gallstone and kidney stone by laser is called Lithotripsy.
• Laser is used to produce an image of One dimension.
• Three dimensional image formed by laser is called Photograph.
• The first laser ever used is Semiconductor laser.
• Ordinary light spreads in all directions.
• Optical fibres are the fine strands of Glass.
• The satellites which revolve in such an orbit, so that they move with earth rotation are called Geo-stationary satellites.
• The elements which emit radiations have atomic number greater than 82.
• In a normal healthy body, the number of red cells or erythrocytes in each cubic millimetre of blood is 5.0 m.
• The average life of a red blood cell in the body is about 120 days.
• DNA is a class of nucleic acids.
• Cellulose is a Carbohydrate.
• After long periods of use, a gray spot develops on the inside of a bulb. This is because the tungsten filament evaporates and collects there.
• Ice cubes are added to a glass of pure water and a glass of a pure alcohol. The ice would be Floating in alcohol and sinking in water.
• Protein which renders a cell less susceptible to attack by viruses is called Chloromycetin.
• The pigment involved in photosynthesis activity is called Chlorophyll.
• The chemical part of the dye that absorbs light and produces colour is called photo chrome.
• A nuclear reactor harnesses nuclear energy by Controlled chain reaction.
• Eyes are tested by dilating the pupils with a very dilute solution of Atropine.

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