- Phenol is used as a raw material in the manufacture of foam used in mattresses, cushions, etc.
- ECG is an instrument used for the disorder of Heart.
- Carbon-14 is used for dating very old objects of archaeological importance.
- Lead is used in storage batteries.
- Enzymes are Biological catalysts.
- DNA finger-printing is the latest technology used in Forensic science.
- Potassium is used in the preparation of glass and soap in the form of Carbonates.
- Potassium phosphate is used in the preparation of detergent.
- In Chlorophyll, magnesium is present.
- Calcium plays a vital role in blood clotting.
- For water purification, Chlorine is used
- Deficiency of calcium causes the impaired growth in infants.
- Wheat, rice, corn and maize are the best sources of carbohydrates.
- The human blood is divided into four groups.
- The muscles, tissues and blood all are made up of Proteins.
- Iron is a part of haemoglobin which transports oxygen.
- In thyroid glands iodine is required for the synthesis of Thyroxin.
- The amount of calories provided by egg is 150 K calories/100gm.
- Jupiter is the largest planet of solar system.
- The mirror placed near the driver of a bus is Concave mirror.
- X-rays are used to disintegrate bladder stones.
- The percentage of carbohydrates in the normal daily food calorie requirement of an adult is about 59%.
- Impure blood is received in the heart in the right auricle.
- Plants take nitrogen in the form of Nitrate.
- Washing soda in water behaves acidic.
- The glad which maintains body temperature is the Pituitary gland.
- Peeled banana under normal condition is brittle.
- Phrenology deals with sensory perception of animals.
- Vinegar is produced by two steps, first fermentation of sugar by yeast, second fermentation of ethyl alcohol by bacteria.
- The longest and the strongest bone in the human body is Femur.
- Red color has the longest wavelength and violet has the shortest wavelength.
- Chronometer is used to measure Time.
- Carbon dioxide is used in fire extinguishers.
- Hereditary disorders are the result of Defective DNA nucleus.
- Pure gold is 24 carat.
- One horse power is equal to 746 watts.
- Dynamo is a device that converts Mechanical energy into electrical energy.
- The minimum velocity required to escape from the gravitational pull is 11.2 km/s.
- Heavy water consists of Oxygen and heavy hydrogen.
- Polio is a viral disease.
- Ag is the symbol for silver.
- Babbage is called the father of computer.
- Dead red blood cells are stored in liver.
- Oxygen
46.1% , 461,000 Silicon
28.2% , 282,000 Aluminum 8.23% , 82,300 Iron
5.63% , 56,300 Calcium 4.15% , 41,500 Sodium
2.36% , 23,600 Magnesium 2.33% , 23,300
Potassium 2.09% , 20,900 Titanium
0.565% , 5,650 Hydrogen
0.14% , 1,400
- Spring tides occur on new moon and full moon days because on these days Sun, moon and earth are in a straight line.
- Clayey soil is best suited for cotton.
- The time interval between two beats of a normal human heart is 1 second.
- The material used for bleaching paper pulp is Sodium hypochlorite.
- Mercury has the smallest diameter.
- The instrument, used for recording tremors of earth, is known as Seismograph.
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