Chemistry- Questions and Answers 16
471. The geosynchronous satellites orbit------- km above the earth?36,000 km
472. Which substance has the highest expansivity in normal temperature?
Caesium
473. What is known as 'Blue Gold'?
Water
474. Which organism can travel in accordance with the magnetic field of the earth?
Snail
475. Bessemer process is associated with the production of------?
Steel
476. Who invented revolver?
Samuel Colt
477. What is the unit of potential difference?
Volt
478. What is known as 'the Metal of the Future'?
Titanium
479. In the International System of Units, the mole is the unit of------?
Amount of substance
480. Which chemical compound is the main constituent of natural gas?
Methane
481. Which chemical has the nick-name of 'the Butter of Zinc'?
Zinc Chloride
482. Which chemical compound is also known in the names of 'Prussian blue, Parisian Blue & Berlin Blue'?
Ferric ferrocyanide
483. Which element is industrially produced through the Claus Process?
Sulfur
484. What is known as 'the Magic Metal of Life'?
Calcium
485. Which acid is usually stored in plastic containers due to its high reactivity toward glass?
Hydrofluoric Acid
486. Which element forms the largest number of solid allotropes?
Sulfur
487. Which chemical is produced through the Raschig Process?
Hydroxylamine
488. Which chemical has the nick¬name of the Salt of Hartshorn'?
Ammonium Carbonate
489. Exposure to which heavy metal causes Acrodynia or Pink disease in children?
Mercury
490. Which compound of mercury is also known as 'red mercury'?
Mercury iodide
491. What colour phenolphthalein turns in the presence of bases?
Pink
492. What colour is shown by a neutral solution in the universal indicator?
Green
493. Which chemical acts as the chief agent in attracting mosquitoes to humans?
Lactic Acid
494. What is the most commonly used de-icing chemical?
Sodium chloride (Table salt)
495. Which chemical is also known as 'hot ice'?
Sodium acetate
496. Which acid is present in the urine of the horses?
Hippuric acid
497. Which chemical is used to make power glues & superglues?
Cyanoacrylate
498. Which metal is used in the catalytic converters in cars to reduce the pollution from exhaust gases?
Platinum
499. What is the most widely used food additive to prevent botulism?
Sodium nitrite
500. What is the commonly used radio wave frequency in the microwave ovens to heat food?
2,500 megahertz
501. Which chemical was historically known as 'magnesia alba'?
Magnesium oxide (Magnesia)
502. Which chemical is also known in the nickname of the English Salt'?
Magnesium sulphate
503. The presence of which biological molecules are detected through the Molisch's test?
Carbohydrates
504. What was the major invention made by the American physicist Chester Carlson?
Xerography
505. Which chemical is also known as 'the Oil of Wintergreen'?
Methyl Salicylate
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