Explore topic-wise InterviewSolutions in Current Affairs.

This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.

1.	Glycerol underset(/_\)overset(KHSO_(4))rarr A A is :
Answer» acrolein glycery sulphate allyl alcohol acrylic acid Solution :N//A

2.	Glycerol to KHSO_4 [A] to LiAIH_4 [B] which of the following is not B
Answer» ALLYL alcohol Acrolein Acrylic acid Propyl alcohol Solution :

3.	Glycerol reacts with P_(4) + I_(2) to form
Answer» Aldehyde Allyl iodide Allyl alcohol Acetylene Solution :`{:(CH_(2)-OH""CH_(2)-I""CH_(2)),(\|""\|"\|\|"),(CH-OHunderset("Small amount")OVERSET(P_(4)+I_(2))to CH-Iunderset(-I_(2))to CH),(\|""\|""\|),(CH_(2)OH""underset("Unstable")(CH_(2)-I)""underset("Allyl iodine")(CH_(2)-I)):}`

4.	Glycerol reacts with Conc. HNO_(3) and Conc. H_(2)SO_(4) to form
Answer» Glycerol mononitrate Glycerol dinitrate Glycerol trinitrate Acrolein Solution :`{:(CH_(2)-OH""CH_(2)-ONO_(2)),(\|""\|),(CH-OH+2HNO_(3)underset(H_(2)SO_(4))OVERSET("conc."H_(2)SO_(4))to CH-ONO_(2)+ 3H_(2)O),(\|""\|),(CH_(2)-OH""underset("Glycerol trinitrate")(CH_(2)-ONO_(2))):}`

5.	Glycerol on warming with exvess of HI :
Answer» 2.iodopropane 1-iodopropane 1,2.3,-tri-iodopropane None Answer :A

6.	Glycerol on reaction with NaHCO_(3) gives
Answer» Acrolein Acetic acid Formic acid Propanol Answer :A

7.	Glycerol on treatmentwith oxalic acid at 110^@ C forms:
Answer» FORMIC ACID `CO_2 and CO` ALLYL alcohol Glycol Answer :A

8.	Glycerol on reacting with sodium gives :
Answer» DISODIUM glycerollate Monosodium glycerollate Trisodium glycerollate None Answer :A

9.	Glycerol on oxidation with Fenton's reagent produces :
Answer» Glyceraldehyde DIHYDROXY acetone Tartonic acid Glyceraldehyde and dihydroxy acetone Answer :D

10.	Glycerol on oxidation with dil. HNO_3 gives :
Answer» Tartonic acid Mesoxalic acid Oxalic acid Glyceric acid Answer :D

11.	Glycerol on oxidation with conc.HNO_3 mainly yiclds:
Answer» GLYCERIC acid Tartronic acid Mesoxalic acid Both (a) and (B) ANSWER :D

12.	Glycerol on oxidation with bismuth nitrate mainly gives :
Answer» GLYCERIC acid Tartronic acid Mesoxalic acid Oxalic acid Answer :C

13.	Glycerol on oxidation with bismuth nitrate forms
Answer» Mesoxalic acid Glyceraldehyde Dihydroxy acetone Tartaric acid Solution :`{:(CH_(2)OH""COOH),(\|""\|),(CHOH OVERSET([o])toCO),(\| ""\|),(CH_(2)OH" "UNDERSET("Mesoxalic acid")(COOH)):}`

14.	Glycerol on heating with periodic acid gives
Answer» 2HCOOH+HCHO `CH_3COOH+HCOOH` HCOOH+2HCHO `HCOOH+2CO_2` SOLUTION :`HIO_3` does OXIDATIVE CLEAVAGE of VICINAL DIOLS

15.	Glycerol is used in the manufacture of explosives like ………………….and …………………….by mixing with ………………… .
Answer» SOLUTION :DYNAMITE, CORDITE, CHINA CLAY

16.	Glycerol is used in the manufacture of
Answer» DYNAMITE Varnish Paints Soft drinks Solution :Glyercol `overset(HNO_(3))to underset("Glyceryl dinitrate")underset(+)("Glyceryl trinitrate") underset("KIESELGUHR")overset("absorbed on")to ` Dynamite

17.	Give three uses of emulsions.
Answer» SOLUTION :(i) The CLEANSING action of soap is due to EMULSIONS. (ii) It is used in the PREPARATION of vanishing cream. (iii) It is used in the preparation of cold liver oil.

18.	Give three test for carboxylic acid.
Answer» Solution :(i) In aqueous solution, carboxylic acid turn blue LITMUS red (ii) Carboxylic acids give brisk effervescence with SODIUM BICARBONATE due to the evolution of carbon-di -oxide. (iii) When carboxylic acid is WARMED with alcohol and conc `H_2SO_4`it forms an ester, which is DETECTED by its fruity odour.

19.	Glycerol is used __________.
Answer» as a sweeteningagent in the MANUFACTURE of GOOD quality SOAP in the manufactureof nitro glycerine in all of these Answer :D

20.	Give three properties of diamond.
Answer» SOLUTION :DIAMOND is very HARD, high MELTING solid. It is an ELECTRICAL insulator.

21.	Give three points of distincition between Lyophilic and Lyophobic sols.
Answer»

22.	Glycerol is present as a triester in :
Answer» PETROLEUM KEROSENE OIL Vegetable oil and fats Naphtha Answer :C

23.	Glycerol is not used in which of following cases
Answer» EXPLOSIVE making Shaving SOAP making As an antifreeze for water As an antisepticagent Solution :GLYCEROL is not used as an anitseptic agent.

24.	Give three examples of sulpha drugs and write their main uses.
Answer» Solution :(i) SULPHADIAZINE. (ii) Sulphaguanidine. (III) Sulphanilamide. They are used in place of antibiotic to prevent the growth of MICROORGANISMS. They are used in SORETHROAT, COUGH and bronchitis.

25.	Give three examples of enzyme catalyzed reactions.
Answer» SOLUTION :(i) The peptide glycyl L-glutamyl L-lyrosin is hydrolysed by an enzyme CALLED pepsin. (II) The enzyme DIASTASE hydrolyses starch into maltose `2(C_6H_10O_5)_n + nH_2O to nC_12H_22O_11` (iii) The YEAST contains the enzyme zymase which converts glucose into ethanol. `C_6H_12O_6 + H_2O to 2C_2H_5OH + 2CO_2`

26.	Glycerol is not used in :
Answer» COSMETICS Matches Explosives Soaps Answer :B

27.	Give three examples of enzyme-catalysed reactions.
Answer» SOLUTION :Examples of enzyme-catalysed reactions : 1. INVERSION of cane sugar : The enzyme invertase converts cane sugar into glucose and fructose. `C_(12) H_(22)O_(11) (aq) + H_2O (l) overset("Invertase")to UNDERSET("Glucose")(C_6H_(12)O_6)(aq) + underset("Fructose")(C_6H_(12)O_6)(aq)` Conversion of glucose into ethyl alcohol : The enzyme zymase converts glucose into ethyl alcohol and carbon dioxide. `C_6H_(12)O_6 (aq) overset("Zymase")to 2C_2H_5OH(aq) + 2CO_2 (g)` Conversion of starch into maltose: The enzyme diastase converts starch into maltose. `underset("Starch")((C_6H_(10)O_5)_n)(aq) + nH_2O (l) overset("Diatase")to underset("Maltose")(nC_(12)H_(22)O_(11))(aq) `

28.	Glycerol ismore viscous than propan-1-ol due to
Answer» many HYDROGEN bonding per MOLECULE high B.P. high MOLECULAR WEIGHT more Lewis basic character Answer :A

29.	Give three examples of emulsifiers.
Answer» Solution :Several TYPES of emulsifiers are known. (i) Most of the lyophillic colloids also act as emulsifiers. EXAMPLE: glue, gelatine. (ii) LONG chain compounds with polar groups like soap and sulphonic acids. (iii) Insoluble powders like CLAY and lamp black also a act as emulsifiers.

30.	Give three examples in which green chemistry has been applied ?
Answer» Solution :Synthesis of lbuprofen , DEHYDROGENATION of DIETHANOLAMINE forproduction of herbicide and REPLACEMENT of CFC.s by `CO_(2)` as blowing agent.

31.	Glycerol is added to soap. It functions-
Answer» as a filler to INCREASE lathering to prevent rapid DRYING to make soap granules. Solution :GLYCEROL being HYGROSCOPIC PREVENTS rapid drying of soaps.

32.	Give three examples for homogeneous catalysis.
Answer» Solution : (i) Decomposition of acetaldehyde by `I_(2)` catalyst. ` UNDERSET("Acetaldehyde")(CH_3CHO_((g))) OVERSET(I_(2_(g))) to underset("Methan")(CH_(4_(g))) + underset("Carbon monoxide")(CO_((g)))` (ii) Hydrolysis of cane SUGAR with mineral acid `underset("Sucrose(l)")(C_(12)O_(22)O_(11))+H_2O_((l)) overset(H_2SO_(4(l)))to underset("Glucose")(C_6H_(12)O_(6(l))) + underset("Fructose")(C_6H_(12)O_(6(l)))` (iii) Acid hydrolysis of an ESTER `underset("Ethyl acetate ")(CH_3COOC_2H_(5_(l))) + H_2O_((l)) overset(H_2SO_(4(l)))to CH_3COOH_((l)) + C_2H_5OH_((l))`

33.	Glycerol is highly viscous.It is due to the fact that :
Answer» It is a highly polar It FORMS EXTENSIVE H-bonding It shows intramolecular H-Bonding It has HIGH B.pt. Answer :B

34.	Give three examples for an ideal solutions.
Answer» Solution :(i) MIXTURE of n-hexane and n-heptane (ii) Mixture of bromoethane and CHLOROETHANE. (iii) Mixture of BENZENE and toluene.

35.	Give three examples for heterogeneous catalysis.
Answer» Solution :(i) Hydrogenation of ethylene in the PRESENCE of Nickel `underset("Ethylene")(CH_2)=CH_2+H_2 OVERSET(Ni)to underset("Ethane")(CH_3)-CH_3` (ii) Decomposition of `H_2O_2` with Pt catalyst . `underset("Hydrogen peroxide")(2H_2O_2)overset(Pt) to underset("Water")(2H_2O) + O_2` (iii) Friedelcrafts reaction `underset("Benzene")(C_6H_6) + underset("Ethanoylchloride")(CH_3COCl)underset(AlCl_3)overset("ANHYDROUS")to underset("Acetophenone")(C_6H_5COCH_3) + HCl`

36.	Glycerol is added to soap. It functions...
Answer» as a filler to increase lathering to prevent rapid DRYING to make soap granules Solution :Glycerol being HYGROSCOPIC PREVENTS rapid drying of SOAPS.

37.	Give three differences between Ideal solution and Non-ideal solution.
Answer» SOLUTION :

38.	Give the various structures of C_(4)H_(8)O_(2): (A) that can give iodoform test and gives white turbidity only on heating with Lucas reagent (B) that can be hydrolysed to give acetic acid and alcohol. (C) that can be decarboxy lated to propane (D) that can give iodoform test and reduces Tollen's reagent. (E) that can reduceTollen's reagent but does not give iodoform test.
Answer» SOLUTION :

39.	Give three applications of Henry's law.
Answer» Solution :(i) To increase the solubility of carbon dioxide, in soft drinks the bottles are sealed under high pressure. (II) To avoid the toxic affects of high CONCENTRATION of nitrogen in the blood i.e., to avoid the disease bends, sea divers carry oxygen cylinder diluted with HELIUM. (iii) Due to lower partial pressure of oxygen at high altitude, concentration of oxygenn decreases in the blood tissues of mountain CLIMBER's. this causes climbers' the become weak and UNABLE to think clearly.

40.	Glycerol is added to soap. It functions
Answer» as a filler to INCREASE lathering to PREVENT RAPID drying to make SOAP granules. Answer :C

41.	Give the uses of sulphuric acid.
Answer» Solution :1. Sulphuric acid is used in the manufacture of fertilisers, ammonium SULPHATE and super phosphates and other chemicals such as hydrochloric acid, nitric acid etc. 2. It is used as a drying AGENT and also used in the preparation of pigments, EXPLOSIVES etc.

42.	Glycerol is added to soap. It functions ........
Answer» as a filler. to INCREASE leathering. to PREVENT rapid DRYING. to MAKE SOAP granules. Solution :to prevent rapid drying.

43.	Glycerol is added to soap. It functions ___________
Answer» as a filler. to increase leathering. to prevent RAPID drying. to make soap granules. Solution :Glycerol is HYGROSCOPIC and therefore, PREVENTS rapid drying of soaps.

44.	Give the uses of sulphuric acid ?
Answer» Solution :(i) Sulphuric acid is USED in the manufacture of fertilisers, ammonium sulphate and super PHOSPHATES and other CHEMICALS such as HYDROCHLORIC acid, nitric acid ETC… (ii) It is used as a drying agent and also used in the preparation of pigments, explosives etc...

45.	Glycerol is added to soap. It function:
Answer» as a filler to INCREASE LATHERING to prevent rapid drying to make soap granules SOLUTION :Shaving SOAPS contain GLYCEROL to prevent rapid drying .

46.	Give the uses of nitric acid.
Answer» Solution :(i) NITRIC ACID is used as a oxidising agent and in the PREPARATION of aquaregia. (ii) 4. Salts of nitric acid are used in PHOTOGRAPHY `(AgNO_(3))` and gunpowder for firearms. `(NaNO_(3))`

47.	Give the uses of silicones.
Answer» SOLUTION :Use of SILICONES: (i) Silicones are USED for low temperature lubrication and in vacuum pumps, high temperature oil baths etc. (ii) They are used for making water proofing clothes (iii) They are used as insulting material in elecrical motor and other appliances (iv) They are mixed with paints and enamels to MAKE them resistant towards high temperature, sunlight, dampness and CHEMICALS.

48.	Glycerol is a tertiary alcohol.
Answer» ANSWER :F

49.	Give the uses of Radon?
Answer» SOLUTION :(i) Radon is radioactive and used as a SOURCE of GAMMA rays (ii) Radon gas is sealed as small capsules and implanted in the body to DESTROY malignant i.e. cancer growth.

50.	Glycerol is…
Answer» rimary alcohol Secondary alcohol Monohydic alcohol Trihydric alcohol Solution :GLYCEROL (1, 2, 3 Propane tri-ol) `underset(OH)underset(\|)CH_(2)-underset(OH)underset(\|)CH-underset(OH)underset(\|)CH_(2)`