Chemistry Class 10th
181. The sublimation of hydrogen by Halogen is called:
A) Halidation
B) Halogenation
C) Reduction
D) None of the above
182. Alkanes react with halogens in the presence of:
A) Sunlight
B) Infra Red Light
C) UV Light
D) Heat
183. _________ reaction involves burning of the matter.
A) Halogenation
B) Combustion
C) Reduction
D) Sublimation
184. For burning of Alkanes, which of the following is required:
A) Nitrogen
B) Sulpher
C) Oxygen
D) Hydrogen
185. Carbon Monoxide is produced by:
A) Volcanic Eruptions
B) Food Production
C) Incomplete Burning
D) Plants and Animals
186. Reactions that release energy and heat:
A) Endothermic Reactions
B) Exothermic Reaction
C) Both A and B
D) None of the above
187. Unsaturated Hydrocarbons:
A) Alkanes
B) Alkenes
C) Alkynes
D) None of the above
188. Alkenes have a ________ bond present.
A) Single
B) Double
C) Triple
D) Varies with the condition
189. The simplest alkene is ______.
A) Methene
B) Propene
C)Ethene
D) None of the above
190. Alkenes can be produced using which of the following:
A) Reduction
B) Addition
C) Sublimation
D) Elimination
191. Dehydration of alcohol allows removal of:
A) Functional group
B) Water Molecule
C) Carbon atom
D) Oxygen Atom
192. Removal of Hydrogen and Halide Group:
A) Dehydration
B) Dehydrohalogentaion
C) Dehalogenation
D) None of the above
193. The First _______ members of Alkenes are liquids.
A) 2
B) 3
C) 4
D) 5
194. Addition of Hydrogen to Alkene group causes:
A) Conversion of Single bond into double bond
B) Conversion of double bond into triple bond
C) Conversion of Double bond into Single bond
D) Conversion of Triple bond to double bond
195. Hydrogenation is an Exothermic Process:
A) True
B) False
196. Hydrogenation is used to convert Oil into Desi Ghee:
A) True
B) False
197. Glycols contain ______ hydroxyl groups.
A) 1
B) 2
C) 3
D) 5
198. Ethene does not induces fruit ripening:
A) False
B) True
199. Alkynes are unsaturated hydrocarbons that contain at least one double bond:
A) True
B) False
200. Welding torches are known as:
A) Smoldering Tool
B) Welder Stick
C) Oxidation Staff
D) Oxyacetylene Torch