You Are On Question Answer Bank SET 2225
111251. Which chemical reaction takes place in a torch cell?
Answer: Chemical energy is converted into electrical energy.
111252. The negative electrode is called?
111253. Substances; that do not conduct electricity are called?
111254. Electrode that is connected to the positive pole of the battery is called?
Answer: Atoms of the same element having same atomic number but different mass number.
111256. Define Isobars?
Answer: Atoms of different elements which have the same mass number but different atomic number.
111257. Define Isotones?
Answer: Atoms of different elements which contain the same number of neutrons.
111258. In a torch cell; which energy is converted into electric energy?
111259. What is isomerism?
Answer: Same molecular formula but different structural formula
111260. What material is used for cutting glass?
111261. Sulphur is required in plants as a nutrient element for?
Answer: Making vitamins
111262. Proteins are mainly made up of?
Answer: Carbon; Hydrogen; Oxygen and Nitrogen
111263. Amino acids are the building blocks of?
111264. Natural rubber is a polymer of?
111265. Car tyre cords are made up of?
Answer: nylon - 66
111266. The drugs used to treat allergy are called?
111267. Substances which prevent the formation of acids in the stomach are called?
111268. 6 to 10% solution of acetic acid is used as a preservative for various food items. It is commonly known as?
111269. Natural antioxidants are?
Answer: Vitamin C and E
111270. The hardness of water is due to the presence of which salts?
Answer: calcium and magnesium salts
111271. Temporary hardness of water is due to the presence of which salts?
Answer: Bicarbonates of Calcium & Magnesium
111272. Permanent hardness of water is due to the presence of which salts?
Answer: Chlorides and sulphates of Calcium & Magnesium
111273. The most commonly used food preservative is?
Answer: Sodium benzoate
111274. Aspirin is used as?
Answer: an analgesic
111275. Paracetamol is used as?
Answer: both analgesic and antipyretic
111276. The drug used against AIDS is?
111277. Which metal is used to make CD?
111278. The smallest particle of an element or a compound; which shows all the properties of that substance is known as?
111279. Non - stick kitchen wares are coated with?
111280. LPG is a mixture of?
Answer: Ethane; Propane and Butane
111281. The main component of LPG is?
111282. The main component of natural gas is?
111283. The process of coating Iron with Zinc is known as?
111284. Soaps solution is basically?
Answer: Alkaline (are the salts of weak acid and strong base. Hence their solution is alkaline)
111285. Detergents are basically-Alkaline/Acidic/Neutral?
Answer: Neutral (Detergents are the salts of strong acid and strong base. Hence their solution will be neutral)
111286. Which acid is known as the “King of Chemicals”?
Answer: Sulphuric acid
111287. The substances which prevent ageing of food materials are commonly known as?
Answer: Anti oxidants
111288. A mixture of carbon monoxide and nitrogen is called?
Answer: producer gas
111289. “King of Chemicals”?
Answer: Sulphuric acid
111290. A mixture of carbon monoxide and hydrogen is called?
Answer: Water gas
111291. A solution of carbon dioxide gas in water is called?
Answer: Soda water
111292. Which gases are used for gas welding?
Answer: Oxygen and acetylene
111293. Rock cotton is?
111294. Element extracted from monozite sand is?
111295. The gas used in refrigerators and ice plants?
Answer: Ammonia (NH3)
111296. The mixture of uranium oxides is commonly known as?
Answer: Yellow cake
111297. Man made elements are commonly known as?
111298. The inorganic elements or compounds which occur naturally in the earth’s crust are known as?
111299. The mineral from which a metal can be profitably extracted are called?
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111300. The process of extraction of metals from their ores; and then refining them for use is known as?
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