Chemistry Class 10th
201. Alkynes can be prepared using:
A) Reduction
B) Elimination
C) Addition
D) None of the above
202. Dihalides attached to adjacent carbon atoms are called:
A) Halide Group
B) Vicinal Dihalide
C) Prostatic Group
D) Inhibitor Group
203. Tetrahalides are compounds having _________ halogens
A) 2
B) 4
C) 5
D) None
204. The first three alkynes are ______.
A) Gases
B) Liquids
C) Solids
D) Volatile Liquid
205. Alkynes are non polar:
A) True
B) False
206. Combustion of Alkynes produce:
A) CO2
B) Water
C) Heat
D) All of the above
207. The Melting and Boiling points of Alkynes increases as we go up the chart.
A) True
B) False
208. Which of the following is a substitution reaction:
A) Halogenation of Alkynes
B Halogenation of Alkenes
C) Halogenation of Alkanes
D) Oxidation of Alkenes
209. Halogenation of methane in the presence of diffused sunlight occurs:
A) Quickly, Only in one step
B) Slowing in one step
C) In series of four steps
D) Quickly in two steps
210. Which of the following decolourizes Br2 Water
A) Ethane
B) Ethene
C) Propane
D) Methane
211. Dehydration of Ethyl Alcohol with conc H2SO4 results in the formation of:
A) Ethane
B) Methane
C) Ethyne
D) Ethene
212. Substitution reaction is the characteristic of:
A) Alkynes
B) Alkenes
C) Alkanes
D) None of the above
213. Which of the following is the least reactive:
A) Ethyne
B) Propene
C) Ethene
D)Ethane
214. The chemical analysis of Protoplasm shows that there are _______ types of compounds:
A) 2
B) 3
C) 5
D) None
215. Organic compounds consist of the following, except which of the following:
A) Carbohydrates
B) Mineral
C) Proteins
D) None of the above
216. Starch is a type of:
A) Protein
B) Carbohydrate
C) Lipid
D) Mineral
217. The ratio of Carbon, hydrogen and Oxygen in the Carbohydrates is:
A) 1:1:2
B) 2:1:2
C) 1:2:1
D) 2:2:2
218. _______ are macromolecules of poly hydroxyl Aldehydes and Ketones.
A) Carbohydrates
B) Proteins
C) Lipids
D) None of the above
219. _________ are usually referred as Saccharide:
A) Carbohydrates
B) Proteins
C) Lipids
D) None of the above
220. Saccharide means _________:
A) Salty
B) Roughage
C) Sweet
D) Bitter