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


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) FalseĀ 

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