Chemistry-Objective Related Question Answers
376. The metal mostly present in clay?
Aluminium
377. The metal used to make cigarette wrapper?
Aluminium
378. The' chemical method used for the concentration of bauxite?
Leaching
379. Compound of aluminium used for manufacturing powerful magnet?
Alnico
380. Naturally occurring aluminium silicate is?
Mica
381. Mica is a bad conductor of electricity and a good conductor of?
Heat
382. Asbestos is otherwise known as?
Rock Cotton
383. Phosphorous was discovered by?
Hennig Brand
384. "One who carries light" is the meaning of?
Phosphorous
385. White phosphorous is kept in?
Water
386. The form of Phosphorous which emits green light on the exposure to atmosphere ?
White phosphorous
387. White phosphorous burns in atmosphere at?
30°C
388. Red phosphorous is used for making ?
Safety matches
389. Substance used to make the match sticks?
Red Phosphorous & Potassium Chlorate
390. The element which is present in the DNA& RNA of animals is?
Phosphorous
391. The element present in the animal bone fertilizer is?
Phosphorous
392. The number of atoms present in a phosphorous molecule is?
4 (tetra atomic)
393. The element having the smell of rotten fish is?
Phosphine (PH3)
394. The isotope of Phosphorous used for the treatment of blood cancer is?
Phosphorous-32
395. The phosphorous which is illuminated in darkness is?
White Phosphorous
396. The product obtained after the heating of White Phosphorous at a high temperature is?
Black Phosphorous
397. The phosphorous used as rat poison ?
Zinc Phosphide
398. Sulphur is a member of?
Chalcogen famiily
399. Which is known as Enemy of copper?
Sulpher
400. Gases which cause fading the colour of silver ornaments are?
Hydrogen Sulphide & Sulphur dioxide
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