IAS 2000 — Chemistry
Science Chemistry questions from IAS 2000.
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9 Chemistry Questions from 2000
A small pouch containing silica gel is often found in bottles of medicine in tablet or powder form because silica gel
Assertion (A): Large cold storage plants use ammonia as refrigerant while domestic refrigerators use chlorofluorocarbons. Reason (R): Ammonia can be liquified at ambient temperatures at low pressures.
Match List I (Industrial processes) with List II (Industry with which associated) and select the correct answer using the codes given below the Lists: List I | List II I. Cracking | A) Rubber II. Smelting | B) Petroleum III. Hydrogenation | C) Copper IV. Vulcanization | D) Edible fats Codes:
Soft drinks such as colas contain significant quantities of
Aluminium surfaces are often ‘anodized’. This means the deposition of a layer of
Consider the following statements: Hard water is not suitable for 1. drinking. 2. washing clothes with soap. 3. use in boilers. 4. irrigating crops. Which of these statements are correct?
Match List I with List II and select the correct answer using the codes given below the Lists: List I | List II I. German Silver | A) Tin II. Solder | B) Nickel III. Bleaching Powder | C) Sodium IV. Hypo | D) Chlorine
Most of the explosions in mines occur due to the mixing of
Which one of the following materials is very hard and very ductile?