TG EAMCET (EAPCET) Chemistry Multiple Choice Questions (MCQs)
TG EAMCET Chemistry MCQs (Unit 23 and 24)
141. Which of the following drugs is classified based on its pharmacological effect?
a) Antihistamines
b) Narcotic analgesics
c) Antiseptics
d) All of the above
Answer: d) All of the above
142. Which class of drugs is used to relieve pain without inducing sleep?
a) Analgesics – Non-narcotic
b) Antifertility drugs
c) Antibiotics
d) Tranquilizers
Answer: a) Analgesics – Non-narcotic
143. Which drug is used to neutralize excess stomach acid?
a) Antihistamines
b) Antacids
c) Antibiotics
d) Antifertility drugs
Answer: b) Antacids
144. Which of the following is an example of an artificial sweetening agent?
a) Glucose
b) Aspartame
c) Fructose
d) Sucrose
Answer: b) Aspartame
145. What is the main function of antioxidants in food?
a) To enhance flavor
b) To prevent spoilage
c) To prevent oxidation
d) To provide energy
Answer: c) To prevent oxidation
146. Which of the following is a synthetic detergent?
a) Soap
b) Sodium lauryl sulfate
c) Potassium soap
d) Glycerol
Answer: b) Sodium lauryl sulfate
147. Which type of drug interacts with enzymes to produce its therapeutic effect?
a) Antifertility drugs
b) Antibiotics
c) Neurologically active drugs
d) Enzyme inhibitors
Answer: d) Enzyme inhibitors
148. What is the action of antiseptics?
a) To kill bacteria outside the body
b) To relieve pain
c) To increase appetite
d) To cure infections inside the body
Answer: a) To kill bacteria outside the body
149. Which of the following drugs is an example of a narcotic analgesic?
a) Paracetamol
b) Aspirin
c) Morphine
d) Codeine
Answer: c) Morphine
150. What is the therapeutic action of tranquilizers?
a) To relieve pain
b) To reduce anxiety
c) To neutralize stomach acid
d) To promote digestion
Answer: b) To reduce anxiety
151. Which of the following is the correct method of preparing alkylhalides from alcohols?
a) Free radical halogenation
b) Electrophilic substitution
c) Nucleophilic substitution
d) Addition of hydrogen halides
Answer: d) Addition of hydrogen halides
152. Which reaction is used for the preparation of arylhalides from hydrocarbons?
a) Sandmeyer reaction
b) Finkelstein reaction
c) Electrophilic substitution
d) Nucleophilic substitution
Answer: a) Sandmeyer reaction
153. Which of the following is a common physical property of haloalkanes?
a) High boiling point
b) Low density
c) Insolubility in water
d) Both a and c
Answer: d) Both a and c
154. In an SN² mechanism, which of the following is true?
a) The reaction involves a two-step mechanism
b) The nucleophile attacks the carbon from the opposite side of the leaving group
c) The reaction occurs only in the presence of a strong base
d) The reaction does not involve inversion of configuration
Answer: b) The nucleophile attacks the carbon from the opposite side of the leaving group
155. Which of the following is a property of nucleophilic substitution reactions in haloalkanes?
a) They occur at the carbon bonded to the halogen
b) They always produce a carbon-carbon bond
c) They are typically faster in polar protic solvents
d) Both b and c
Answer: a) They occur at the carbon bonded to the halogen
156. Which of the following reactions is used to prepare alkylhalides from alkenes?
a) Electrophilic substitution
b) Addition of hydrogen halides
c) Free radical halogenation
d) Addition of water
Answer: b) Addition of hydrogen halides
157. What is the main use of DDT (dichlorodiphenyltrichloroethane)?
a) Disinfectant
b) Insecticide
c) Antiseptic
d) Fungicide
Answer: b) Insecticide
158. What is the major environmental concern regarding the use of Freons?
a) They are non-biodegradable
b) They cause ozone depletion
c) They are highly toxic to humans
d) They are highly flammable
Answer: b) They cause ozone depletion
159. Which of the following methods is used to prepare arylhalides from diazonium salts?
a) Finkelstein reaction
b) Sandmeyer reaction
c) Addition of halogens to alkenes
d) Free radical halogenation
Answer: b) Sandmeyer reaction
160. Which of the following is an example of an electrophilic substitution reaction in haloarenes?
a) Nucleophilic substitution with a halide ion
b) Halogenation of the aromatic ring
c) Addition of hydrogen halides to the alkene
d) Both a and b
Answer: b) Halogenation of the aromatic ring
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