Chemistry in Everyday Life PYQs Set 5 (PDF)

Set 5 of 8 · Questions 121-150 of 240

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Mere Teacher · Previous Year Questions NEET Chemistry · Chemistry in Everyday Life · Set 5 (Q121-150)
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121. $Which of the following hydrocarbons has the lowest dipole moment :$ (1) (2) $CH3C\equivCCH3$ (3) $CH3CH2C\equivCH$ (4) $CH2=CH-C\equivCH$ 122. $Which of the following enhances the lathering property of soap?$ (1) $Sodium stearate$ (2) $Sodium carbonate$ (3) $Sodium rosinate$ (4) $Trisodium phosphate$ 123. $Which of the following compounds is not an antacid ?$ (1) $Aluminium hydroxide$ (2) $Cimetidine$ (3) $Phenelzine$ (4) $Ranitidine$ 124. $Given below are two statements : One is labelled as Assertion A and the other labelled as Reason R. Assertion A: Antihistamines do not affect the secretion of acid in stomach. Reason R : Antiallergic and antacid drugs work on different receptors. In the light of the above statements, choose the correct answer from the options given below:$ (1) $A is false but R is true$ (2) $Both A and R are true and R is the correct explanation of A$ (3) $A is true but R is false$ (4) $Both A and R are true but R is not the correct explanation of A.$ 125. $The layer of atmosphere between 10 km to 50 km above the sea level is called as:$ (1) $troposphere$ (2) $thermosphere$ (3) $stratosphere$ (4) $mesosphere$ 126. $Which of the following is not a broad spectrum antibiotic?$ (1) $Vancomycin$ (2) $Ampicillin$ (3) $Ofloxacin$ (4) $Penicillin G$ 127. $Aspirin is an acetylation product of$ (1) $m ‐Hydroxybenzoic acid$ (2) $0 ‐Dihydroxybenzene$ (3) $0 ‐Hydroxybenzoic acid$ (4) $p ‐Dihydroxybenzene. (1998)$ 128. $Which of the following is a bactericidal antibiotic ?$ (1) $Erythromycin$ (2) $Tetracycline$ (3) $Ofloxacin$ (4) $Chloramphenicol$ 129. $Which of the following could act as a propellant for rockets ?$ (1) $Liquid hydrogen + liquid nitrogen$ (2) $Liquid oxygen + liquid argon$ (3) $Liquid hydrogen + liquid oxygen$ (4) $Liquid nitrogen + liquid oxygen$ 130. $Paracetamol is a/an$ (1) $analgesic$ (2) $antipyretic$ (3) $both (a) and (b)$ (4) $antimalarial.$ 131. $Bithional is generally added to the soaps as an additive to function as a/an :$ (1) $Dryer$ (2) $Buffering agent$ (3) $Antiseptic$ (4) $Softener$ 132. $Ranitidine belongs to which of the following class of drugs?$ (1) $Tranquiliser$ (2) $Antiseptic$ (3) $Analgesic$ (4) $Antacid$ 133. $A chemical which stimulates the secretion of pepsin is :$ (1) $Anti histamine$ (2) $Cimetidine$ (3) $Histamine$ (4) $Zantac$ 134. $The compound that does not liberate C O_{2}, on treatment with aqueous sodium bicarbonate solution, is$ (1) $Benzoic acid$ (2) $Benzenesulphonic acid$ (3) $Salicylic acid$ (4) $Carbolic acid (Phenol)$ 135. $Which of the following is employed as tranquilizer?$ (1) $Equanil$ (2) $Naproxen$ (3) $Tetracyclin$ (4) $Dettol$ 136. $Peroxyacetyl nitrate (PAN), an eye irritant, is produced by :$ (1) $Classical smog$ (2) $Acid rain$ (3) $Organic waste$ (4) $Photochemical smog$ 137. $Which of the following statements is true?$ (1) $HF is less polar than HBr$ (2) $absolutely pure water does not contain any ions$ (3) $chemical bond formation takes place when forces of attraction overcome the forces fo repulsion$ (4) $in covalency transference of electron takes place$ 138. $The statement which is not correct, is :$ (1) $Chlorophyll is responsible for the synthesis of carbohydrates in plants$ (2) $The compound formed by the addition of oxygen to haemoglobin is called oxyhaemoglobin$ (3) $Acetyl salicyclic is known as aspirin$ (4) $The metal ion present in vitamin B12 is Mg2+$ 139. $Which one of the following is employed as Antihistamine?$ (1) $Chloramphenicol$ (2) $Diphenylhydramine$ (3) $Norothindrone$ (4) $Omeprazole (2011)$ 140. $Which one of the following is employed as Antihistamine ?$ (1) $Chloramphenicol$ (2) $Diphenyl hydramine$ (3) $Norothindrone$ (4) $Omeprazole$ 141. $Artificial sweetner which is stable under cold conditions only is :$ (1) $Saccharine$ (2) $Sucralose$ (3) $Aspartame$ (4) $Alitame$ 142. $The medicine used in controlling depression and hyper tension is$ (1) $Ranitidine$ (2) $Paracetamol$ (3) $Equanil$ (4) $Chloramphenicol$ 143. $Antiseptics and disinfectants either kill or prevent growth of microrganisms. Identify which of the following statements is not true.$ (1) $Dilute solutions of boric acid and hydrogen peroxide are strong antiseptics.$ (2) $Disinfectants harm the living tissues.$ (3) $A 0.2% solution ofphenol is an antiseptic while 1% solution acts as a disinfectant.$ (4) $Chlorine and iodine are used as strong disinfectants. (NEET2013)$ 144. $During the qualitative analysis of salt with cation y^{2 +}, addition of a reagent (X) to alkaline solution of the salt gives a bright red precipitate. The reagent (X) and the cation (y^{2 +}) present respectively are:$ (1) $Dimethylglyoxime and N i^{2 +}$ (2) $Dimethylglyoxime and C o^{2 +}$ (3) $Nessler's reagent and H g^{2 +}$ (4) $Nessler's reagent and N i^{2 +}$ 145. $Which of the following reagents may be used to distinguish between phenol and benzoic acid ?$ (1) $Aqueous NaOH$ (2) $Tollen's reagent$ (3) $Molisch reagent$ (4) $Neutral FeCl3$ 146. $Which of the following statement is not true ?$ (1) $Small aliphatic compound with at least two functional group which can form hydrogen bond are water soluble$ (2) $Most of the aromatic compounds are water insoluble due to large hydrophobic group of six carbon atom.$ (3) $Aromatic amines are soluble in aq. NaOH but insoluble in aq. HCl.$ (4) $Aromatic hydroxy compounds are soluble in aq. NaOH solution.$ 147. $The pH of rain water, is approximately:$ (1) $5.6$ (2) $7.5$ (3) $7.0$ (4) $6.5$ 148. $Which is wrong with respect to our responsibility as a human being to protect our environment?$ (1) $Restricting the use of vehicles$ (2) $Avoiding the use of floodlighted facilities$ (3) $Setting up compost tin in gardens.$ (4) $Using plastic bags.$ 149. $Antiseptics and disinfectants either kill or prevent growth of microrganisms. Identify which of the following statements is not true. :$ (1) $Chlorine and iodine are used as strong disinfectants.$ (2) $Dilute solutions of Boric acid and Hydrogen Peroxide are strong antiseptics.$ (3) $Disinfectants harm the living tissues.$ (4) $A 0.2 % solution of phenol is an antiseptic while 1 % solution acts as a disinfectant.$ 150. $Using very little soap while washing clothes, does not serve the purpose of cleaning of clothes because$ (1) $soap particles remain floating in water as ions$ (2) $the hydrophobic part of soap is not able to take away grease$ (3) $the micelles are not formed due to concentration of soap, below its CMC value$ (4) $colloidal structure of soap in water is completely disturbed.$