Organic Chemistry

1. Carbon is called a unique element because—

2. Who proposed the Vital Force Theory?

3. The first organic compound synthesized in the laboratory was—

4. Who first synthesized urea in the laboratory?

5. Which of the following properties are found in organic compounds?

6. Which of the following properties are found in organic compounds?

7. Which of the following elements is found in all organic compounds?

8.The most abundant organic compound found in nature is—

In organic compounds, the four valencies of the carbon atom are directed towards the four corners of a tetrahedron with carbon at the center — this idea was first given by?

10. Among all known atoms, carbon is a unique atom because—

11. Consider the following statements:

1. In organic chemistry, the study of carbon compounds is done.
2. Organic chemistry is actually the chemistry of hydrocarbons and their derivatives.

Which of the above statements is/are correct?

12. What type of chemical bond is present in organic compounds?

13. The total number of carbon compounds is extremely high compared to other elements, because—

14. Which of the following is not an organic compound?

15. Which of the following is an organic compound?

16. The organic compounds in which all the carbon atoms in the molecule form an open chain are called—

17. Benzene and phenol are which type of organic compounds?

18. Which of the following is aliphatic?

19. Which of the following is a heterocyclic organic compound?

20. The group of atoms present in organic compounds that imparts chemical properties to the compound is called—

21. Consider the following statements:

1. The chemical properties of an organic compound depend on the functional group present in it.
2. All organic compounds having the same functional group undergo similar chemical reactions.

Which of the above statements is/are correct?

24. The reactive group present in carboxylic acids is—

25. Which statement is correct regarding a homologous series?

26. Consider the following statements—

1. All compounds of a homologous series contain the same functional group.
2. All compounds of a homologous series show similarity in chemical properties.
3. Compounds of a homologous series show similarity in physical properties.

Which of the above statements are correct?

27. Which of the following are homologous?

29. The IUPAC system of nomenclature for organic compounds was implemented in—

30. The general formula of saturated hydrocarbons is—

31. Which of the following statements is NOT correct regarding saturated hydrocarbons?

32. The general formula of an alkyl group (R) is—

35. What is the chemical formula of propyl?

34. What is the chemical formula of propane?

36. The IUPAC name of CH₃OH is—

39. The IUPAC name of Chloral is—

40. The IUPAC name of chloroform is—

41. In the excited state of a carbon atom, the number of unpaired electrons is—

42. Which of the following pairs are homologous?

43. Organic compounds that have the same molecular formula but different structural formulas are called—

44. Isomeric compounds show differences in—

46. Consider the following statements—

1. Most organic compounds exhibit isomerism.
2. The phenomenon of isomerism is not found in inorganic compounds.

Which of the above is/are NOT correct?

45. Isomeric compounds show similarity in—

47. Which of the following shows isomerism?

48. Normal butane and isobutane are—

49. Pentane, isopentane, and neopentane are which type of isomers?

50. 1-Propanol and 2-Propanol are—

51. 1-butene and 2-butene are—

52. Ethyl alcohol (C₂H₅OH) and Dimethyl ether (CH₃–O–CH₃) are—

53. Acetone (CH₃–CO–CH₃) and Propionaldehyde (CH₃–CH₂–CHO) are—

Consider the following statements:

1. Geometrical isomerism is found in those organic compounds in which there is a double bond between two carbon atoms.
2. Geometrical isomerism is exhibited by alkenes and their derivatives.

Which of the above is/are correct?

55.Maleic acid and Fumaric acid exhibit which type of isomerism?

"Which of the following represents an asymmetric carbon atom?"

Which of the following are isomers?

"Which of the following represents an asymmetric carbon atom?"

59.How many chain isomers are possible for the molecular formula C₄H₁₀?

60. Which is considered the “parent” of all aliphatic compounds?

61. The shape of a methane (CH₄) molecule is—

62. The bond angle between carbon and hydrogen in a methane (CH₄) molecule is—

63. In a methane (CH₄) molecule, the carbon atom is—

64. Which gas is produced when water reacts with aluminium carbide (Al₄C₃)?

65. What is the main component of fuels like biogas, natural gas, and gobar gas?

66. Which gas is called Marsh gas?

67. How is methane gas prepared in the laboratory?

68. Which gas is mainly present in the mixture of gases released from a septic tank?

69. Which of the following statements about methane (CH₄) is NOT correct?

70. Consider the following statements:

1. Methane burns in air with a non-luminous flame.
2. The color of the methane flame is blue.

Which of the above statements is/are correct?

71. What is the cause of explosions in mines?

72. The gas produced due to the decomposition of vegetation in marshy areas is: 

73. The area that produces methane gas is:

74. The gas mainly used for cooking is:

75. Carbon black, used in making printing ink or black ink, is prepared from:

76. Consider the following statements:

1. Methane reacts with halogens only in bright sunlight.
2. In the dark, there is no reaction between methane and halogens.

Which of the above statements is/are correct?

77. What is the carbon–hydrogen bond length in a methane molecule?

78. Which of the following gases is used in cigarette lighters?

79. Which gas is produced when sodium propionate is heated with soda lime?

80. The chemical form of artificial camphor is:

81. The shape of an ethylene (C₂H₄) molecule is:

82. What is the bond angle between carbon and hydrogen in an ethylene molecule?

83. Which of the following statements about ethylene is NOT correct?

84. How is ethylene (C₂H₄) gas prepared in the laboratory?

85. Ethylene (C₂H₄) reacts with sulfur monochloride (S₂Cl₂) to produce which poisonous gas?

87. In which of the following ways is ethylene NOT used?

88. Ethyne is an example of:

86. Which of the following was used as a chemical weapon in World War I?

89. Consider the following statements:

1. Acetylene is an odorless gas.
2. Due to the presence of phosphine impurity, acetylene has a garlic-like odor.

Which of the above statements is/are correct?

90. How is acetylene gas prepared in the laboratory?

91. Which of the following fuels is used in gas welding?

92. Lewisite gas, used in war, is prepared from:

93. What is the chemical name of Westron?

94. The IUPAC name of Westron is:

95. Which gas is used to ripen fruits artificially?

96. Which gas is used in lamps to produce light?

97. Which organic compound, known as Narsilene, is used as an anesthetic in surgery?

99. Which of the following is used for joining (welding) and cutting metals?

98. When acetylene is passed through a heated copper or iron tube, which compound is obtained?

100. Consider the following statements:

1. Methane burns with a non-luminous flame.
2. Ethylene burns with a luminous flame.
3. Acetylene burns with a sooty (carbon-rich) flame.

Which of the above statements is/are correct?

101. Where are chlorofluorocarbons (CFCs) mostly used?

102. By what other name is the chlorofluorocarbon used in refrigerators (domestic coolers) known?

103. Freon is:

104. Which of the following statements about chloroform is NOT correct?

106. By what other name is carbon tetrachloride (CCl₄) known?

107. Which is used to extinguish fire caused by electricity?

108. In which way is carbon tetrachloride used?

109. Which of the following solvents is used in dry cleaning of clothes?

110. Which of the following is NOT an anesthetic agent?

111. The general formula of alcohol is—

112. Alcohol contains which of the following elements?

113. The chemical formula of ethanol (ethyl alcohol) is—

114. The beverage substances like beer, wine, whisky, and cough syrup contain—

115. By which method is ethyl alcohol prepared in industries?

116. The slow conversion of complex organic substances into simpler substances in the presence of enzymes is called—

117. Which of the following is a fermentation reaction?

119. Glucose and fructose are converted into ethanol by which enzyme?

118. What type of reaction is fermentation?

120. The inventor and zymase enzymes used in alcohol (ethanol) production come from—

121. In the presence of concentrated sulfuric acid, the reaction of ethene (C₂H₄) with water produces—

122. Which gas is released during fermentation?

123. Consider the following statements regarding the properties of ethanol (ethyl alcohol):

1. It is a colorless liquid.
2. It is insoluble in water.
3. It is highly flammable.
4. It burns with a blue flame to give carbon dioxide and water.

Which of the above statements are correct?

124. Which alcohol is used in alcoholic beverages?

125. Which alcohol is known as “Grain Alcohol”?

126. Excessive consumption of ethyl alcohol adversely affects which human organ?

127. When toxic substances like methanol, pyridine, or copper sulfate are added to ethyl alcohol, it is called—

128. Why is it necessary to denature alcohol?

129. Denatured spirit is mainly used for which purpose?

130. Rectified spirit is—

131. Absolute alcohol is—

132. After shaving, the solution applied to the face gives a cooling sensation. This property is due to the presence of which compound?

133. What is the final product of alcoholic fermentation?

134. Tincture of iodine is—

135. Which of the following is also called wood spirit or wood alcohol?

137. Antifreeze is a mixture of—

136. Which alcohol, if consumed even in very small amounts, can cause severe poisoning and blindness?

139. In cold countries, automobile radiators use an antifreeze mixture. What does this mixture contain?

138. When ethylene reacts with cold, alkaline potassium permanganate solution, it produces—

140. The IUPAC name of formaldehyde is—

141. A 35–40% aqueous solution of formaldehyde is called—

142. Methanol, in the presence of catalysts like silver or iron oxide and molybdenum oxide at 873–923 K, gets oxidized to produce—

143. 'Urotropine', used in urinary disorders, is prepared from—

144. The chemical name of urotropine is—

145. Which of the following substances is commercially produced from cumene?

146. Which of the following is used as a nail polish remover?

147. Consider the following statements:

1. Ethanoic acid is commonly known as acetic acid.
2. A 5–8% solution of acetic acid in water is called vinegar.

Which of the above statements is correct?

149. Which of the following is NOT correct?

150. Pyroligneous acid contains—

151. Pyroligneous acid obtained from wood contains—

152. The sodium or potassium salts of higher carboxylic acids like stearic acid, palmitic acid, and oleic acid are called— 

153. The sodium or potassium salts of high fatty acids such as oleic (CH₃(CH₂)₇CH=CH(CH₂)₇COOH), stearic (CH₃(CH₂)₁₆COOH), and palmitic (CH₃(CH₂)₁₄COOH) acids are called—

154. The sodium salts of hydrogen sulfate derivatives of higher alcohols are called—

155. The sodium salts of long-chain benzene sulfonic acids are called—

156. Which of the following statements about soap is NOT correct?

157. Consider the following statements:

1. Soap is suitable for cleaning in soft water.
2. Detergent is suitable for cleaning in both soft and hard water.

   Which of the above statements is correct? 
   

158. When soap or detergent molecules dissolve in water, their molecules aggregate to form clusters, which are called—

160. Which of the following characteristics should be present in good quality soap?

159. Oleic, stearic, and palmitic acids are— 

161. Soap is not suitable for cleaning in hard water because—

162. Which compound is called the parent of aromatic compounds?

163. What is the chemical name of Gamaxene?

164. Gamaxene is—

165. Carbolic acid is—

166. The common name of Carbolic acid is—

167. Which substance is found in the sting of an ant or a bee?

168. Which acid is present in vinegar?

169. Which acid is found in tomato?

170. What causes the sourness of curd (yogurt)?

171. In which does citric acid occur in free form?

172. Which acid is found in grapes?

173. Which acid is found in tamarind?

174. Which acid is used to remove stains from clothes?

175. Which acid is used in photography?

176. In photography, oxalic acid is used in which form?

177. Kidney stones in humans are mostly made of—

178. Doctors advise that people suffering from kidney and gall bladder stones should avoid eating large amounts of tomato, eggs, milk, and cabbage, so that crystals of the following do not form—

179. In plant cells, oxalic acid occurs in which form?

180. Which of the following pairs is NOT correctly matched?

181. The compound related to the Bhopal Gas Tragedy was—

182. Which compound is used in tear gas?

183. Which preservative is used to keep tomato ketchup, fruit juice, and other food items safe for a longer time?

184. Which acid is used in the manufacture of medicines?

185. Which is used in food processing?

186. The full name of D.D.T. (DDT) is—

188. What is the reason for the sweet taste of fruits?

187. By accident, touching the leaves of the scorpion plant (netol) causes a burning sensation. This is due to the secretion of which substance?

189. Who discovered benzene?

190. In what form is iodoform used?

191. Which of the following explosives is called "Nobel oil"?

192. Which of the following is not an explosive?

193. Who discovered the explosive RDX?

194. Which of the following explosives is called a plastic explosive?

195. Consider the following statements:

1. Dynamite is prepared using nitroglycerin.
2. Nowadays, sodium nitrate is used instead of nitroglycerin to make dynamite.

Which of the above statements is/are correct?

196. The molecular formula of R.D.X. is:

197. R.D.X. explosive is also known by which name?

198. The heat released by R.D.X. explosive is:

199. What is wax?

200. Paraffin wax is obtained from:

201. Which of the following statements about polymerization is NOT correct?

202. An example of polymerization is:

203. Which of the following statements about "polymer" is NOT correct?

204. Which of the following is not a natural polymer?

205. Natural rubber is a polymer of which hydrocarbon?

206. Which of the following synthetic polymers is similar to natural rubber?

207. Neoprene rubber is obtained by the polymerization of which of the following?

208. The first industrial synthetic rubber is:

209. Which of the following polymers contains ester linkages?

210. The fiber obtained by the condensation of adipic acid and hexamethylene diamine is:

211. Phenol is used in the manufacture of which of the following?

212. Which of the following is an addition polymer?

213. PMMA is a polymer of—

214. Which of the following is used to make non-stick cooking utensils?

215. Caprolactam is the monomer of which of the following?

216. Terylene is formed by the reaction of terephthalic acid with which of the following?

217. Orlon is a polymer made from which of the following?

218. What is Teflon?

219. Polymerization of chloroethene gives—

220. Which of the following is not a natural polymer?

221. Which of the following is not a polymer?

237. Consider the following statements—

1. Nylon is a polyamide fiber.
2. Terylene is a polyester fiber.

Which of the above statements is/are correct?

222. Which of the following polymers is used to make bulletproof windows?

223. Which of the following polymers is used in making non-stick frying pans?

224. Bakelite is a polymer of phenol and which of the following?

225. Raincoats are made from which of the following?