Chemistry-Objective Related Question Answers
1151. Which halogen is highly metallic in character?
Astatine
1152. Which gas has the smell of rotten eggs?
Hydrogen sulphide
1153. The phenomenon by which the same element exists in the same physical state in different forms is known as?
Allotropy
1154. Substances used for removing excess of chlorine from textiles after their bleaching are in general called?
Antichlor
1155. The substances which are capable of absorbing combined water or elements of water from molecules of compounds are called?
Dehydrating agent
1156. The substances which are capable of removing water vapour from other substances are called?
Drying agents
1157. Smell of white phosphorus?
Garlic
1158. What is the acid present in milk?
Lactic acid
1159. What is the colour of chlorine?
Greenish yellow
1160. What is the colour of ruby?
Red
1161. Which mineral is known as ‘fool’s gold’?
Iron pyrites
1162. The iron obtained direct from the blast furnace is called?
Pig iron
1163. What is agate?
Naturally occuring silica
1164. Which is the germicidal component in bleaching powder?
Chlorine
1165. Write the name of a liquid in which phosphorous dissolves:?
Carbondisulphide
1166. Which element is used as a disinfectant; as a bleaching agent and to purify water?
Chlorine
1167. What is the common name for sodium chloride?
Salt
1168. An enzyme which helps in digestion is?
Protease
1169. What do you understand by 22 carat gold?
22 parts gold; 2 parts copper
1170. What is sublimation?
Converting a solid directly into its vapour
1171. The ashes of plants contain alkali metals; 90% of which is?
Potassium
1172. Which gas turns litmus colourless?
Chlorine
1173. What is the common name for hydrogen hydroxide?
Water
1174. Who is known as the “Father of Polymer Science?
The German scientist Herman Staudinger
1175. The substances which conduct electricity with the help of the ions present in them are called?
Electrolytes
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