Chemistry-Objective Related Question Answers
226. First known super conductor?
Mercury
227. Which is known as Anomalous Metal?
Mercury
228. The metal helps for blood clotting?
Calcium
229. The metal present in Chlorophyll?
Magnesium
230. The metal used for making IC Chips?
Silicon
231. The metal used for making the nib of a fountain pen?
Osmium
232. The metal used in Fluorescent lamps?
Mercury
233. The metal most abundant in moon?
Titanium
234. The most corrosion-resistant metal?
Iridium
235. In fireworks which metal is used for Red colour?
Strontium
236. In fireworks which metal is used for Orange colour?
Calcium
237. In fireworks which metal is used for Green colour?
Barium
238. In fireworks which metal is used for Yellow colour?
Sodium
239. Extracting method of metal is known as?
Metallurgy
240. The impurity present in the ore?
Gangue
241. Substance added to ore to remove impurities is known as?
Flux
242. Two types of flux are:?
Acidic flux (eg : silica) & Basic flux (eg : quick lime)
243. The product obtained when gangue is added with flux?
Slag
244. Method of separating metals which have low melting point I from an ore is?
Liquation
245. Heating the ore below its melting point in the absence of air I to remove volatile impurities is known as?
Calcination
246. Separating a substance from a mixture of liquid having I different boiling point is called?
Distillation
247. The deposition of metal on another by electric current is called?
Electroplating
248. A substance react with water is called?
Hydrolysis
249. Chemical decomposition by the action of heat is called?
Pyrolysis
250. The process of changing of liquid into gas?
Vaporization
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