Chemistry-Objective Related Question Answers
1176. The atoms or groups of atoms that carry electrical charge are called?
Ions
1177. Which chemical reaction takes place in a torch cell?
Chemical energy is converted into electrical energy.
1178. The negative electrode is called?
Cathode
1179. Substances; that do not conduct electricity are called?
Insulators
1180. Electrode that is connected to the positive pole of the battery is called?
Anode
1181. DefineIsotopes?
Atoms of the same element having same atomic number but different mass number.
1182. Define Isobars?
Atoms of different elements which have the same mass number but different atomic number.
1183. Define Isotones?
Atoms of different elements which contain the same number of neutrons.
1184. In a torch cell; which energy is converted into electric energy?
Chemical
1185. What is isomerism?
Same molecular formula but different structural formula
1186. What material is used for cutting glass?
Diamond
1187. Sulphur is required in plants as a nutrient element for?
Making vitamins
1188. Proteins are mainly made up of?
Carbon; Hydrogen; Oxygen and Nitrogen
1189. Amino acids are the building blocks of?
Proteins
1190. Natural rubber is a polymer of?
Isoprene
1191. Car tyre cords are made up of?
nylon - 66
1192. The drugs used to treat allergy are called?
Antihistamins
1193. Substances which prevent the formation of acids in the stomach are called?
Antacids
1194. 6 to 10% solution of acetic acid is used as a preservative for various food items. It is commonly known as?
Vinegar
1195. Natural antioxidants are?
Vitamin C and E
1196. The hardness of water is due to the presence of which salts?
calcium and magnesium salts
1197. Temporary hardness of water is due to the presence of which salts?
Bicarbonates of Calcium & Magnesium
1198. Permanent hardness of water is due to the presence of which salts?
Chlorides and sulphates of Calcium & Magnesium
1199. The most commonly used food preservative is?
Sodium benzoate
1200. Aspirin is used as?
an analgesic
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