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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. |
Name a polymer used ua a film for wrapping food. |
| Answer» Solution :SARAN (vinylidene chloride and vinyl chloride FORM a POLYMER) USED as film for wrapping FOOD. | |
| 2. |
Name a polymer each for the following applications : Making laminated sheets |
| Answer» SOLUTION : UREA FORMALDEHYDE RESIN | |
| 4. |
Name a metamer of diethyl ether. |
| Answer» SOLUTION :The METAMER of DIETHYL ether is 1 - Methoxy PROPANE. | |
| 6. |
Name a method used to remove gangue impurity from sulphide. |
| Answer» SOLUTION :FROTH FLOATATION PROCESS. | |
| 7. |
Name a metal which can be obtained by pyrometallurgy / hydrometallurgy / electrometallurgy. |
| Answer» Solution :Pyrometallurgy : Zinc (ZN), Hydrometallurgy : Gold (Au), ELECTROMETALLURGY : MANGNESIUM (MG). | |
| 8. |
Name a metal refined by Van Arkel method. |
| Answer» SOLUTION :ZIRCONIUM (or) TITANIUM (or) ZR (or) TI | |
| 9. |
Name a member of the lanthanoid series which is well known to exhibit +4 oxidation state |
| Answer» SOLUTION :CERIUM (Z=58) | |
| 10. |
Name a member of the lanthanoid series which is well known to exhibit +4 oxidation state. |
| Answer» SOLUTION :CERIUM `(Z= 58)` | |
| 11. |
Name a member of the lanthanoid series which is well known to exhibit + 4 oxidation state. |
| Answer» Solution :CERIUM exhibits + 4 OXIDATION STATE. | |
| 12. |
Name a member of lanthanideseries which is well known to exhibit +4oxidation state , |
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Answer» Ce |
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| 13. |
Name a ligand which is bidentate and give an example of the complex formed by this ligand. |
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Answer» Solution :Ethylenediamine (EN) is bidentate ligand. `[Co(en)_(3)]^(3+)`. Its IUPAC NAME is tris(ethylenediamine)cobalt(III) ION. |
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| 14. |
Name a lanthanoid element which exhibits +4 oxidation state besides +3 oxidation state. |
| Answer» SOLUTION :Cerium, it shows +3 as well as +4 OXIDATION STATE. | |
| 16. |
Name a hexadentate ligand and draw its structure. Write the formula of the complex which it forms with Co (III). Also draw the structure of this complex. |
Answer» SOLUTION :Hexadentate LIGAND is ETHYLENEDIAMINE TETRAACETATE (EDTA). Its structure is  Arrows represent the points of coordination. Complex with Co(III) is `[Co(EDTA)]^(-)`. Structure of this complex is : 
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| 18. |
Name a food preservative which is most commonly used by food producers. |
| Answer» Solution :COMMON salt (NaCl) is USED as FOOD preservative. | |
| 19. |
Name a fat soluble vitamin, Suggest a diseases caused by its deficiency. |
| Answer» Solution :VITAMIN A- Night BLINDNESS -Prolonged DEFECIENCY leads to XEROPHTHALMIA | |
| 20. |
Name a drug which acts as antihistamine. |
| Answer» SOLUTION :BROMPHENIRAMINE | |
| 21. |
Name a drug used in mental depression. |
| Answer» Solution :Equanil or barbituric ACID DERIVATIVES VIZ. veronal, seconal, LUMINAL, etc. | |
| 22. |
Name a drug used in case of mental depression. |
| Answer» Solution :EQUANIL is USED in CASE of MENTAL depression. | |
| 23. |
Name a drug for acidity which treats the cause of acidity. |
| Answer» SOLUTION :CIMETIDINE | |
| 24. |
Name a disease in which chloromycetin is used as effective drug. |
| Answer» SOLUTION :Chloromycetin is USED as EFFECTIVE DRUG in Typhoid. | |
| 25. |
Name a copolymer which is used for making nonbreakable crockeries. |
| Answer» Solution :The polymer USED in making nonbreakable CROCKERIES : FORMALDEHYDE melamine polymer. | |
| 26. |
Name a copolymer which is used for making non-breakable plastic crockery. |
| Answer» SOLUTION :Melamine-formaldehyde RESIN. | |
| 27. |
Name a copolymer which is used for making non -breakable plastic crockery. |
| Answer» SOLUTION :MELAMINE -formaldehye RESIN. | |
| 28. |
Name a coordination compound of platinum which is used to inhibit growth of tumours. |
| Answer» SOLUTION :cis-platin | |
| 29. |
Name a compound which has similar geometry to ether. |
| Answer» SOLUTION :A COMPOUND which has SIMILAR GEOMETRY to ether is WATER. | |
| 30. |
Name a compound which is isostructural with KMnO_(4). |
| Answer» SOLUTION :POTASSIUM PERCHLORATE | |
| 31. |
Name a compound having two similar asymmetric carbon atoms and give its structure. What type of isomerism does it exhibit? Draw Fischer projection formulas of these isomers and comment on their optical activity. How are they related to each other? |
Answer» Solution :TARTARIC acid has two SIMILAR asymmetric carbon atoms (HOOC - CHOH - CHOH - COOH). The compound exhibits optical isomerism. Fisher projection FORMULAS of its isomers are as follows:  The relations AMONG the isomers are as follows: I and II are enantiomers, I and III are diastereoisomers and II and III are diastereoisomers. |
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| 32. |
Name a chemical which stimulates the secretion of pepsin and hydrochloric acid in the stomach. |
| Answer» SOLUTION :HISTAMINE | |
| 33. |
Name a chemical which is used in leather industry and as an oxidant for the preparation of many azo compounds. |
| Answer» SOLUTION :POTASSIUM DICHROMATE | |
| 34. |
Name a chlorine containing antibiotic . |
| Answer» SOLUTION :CHLORAMPHENICOL | |
| 35. |
Name a colligative property. |
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Answer» Solution :(i) Relative lowering of VAPOUR pressure. (ii) Depression in FREEZING POINT. (III) Elevation of BOILING point. (iv) The osmotic pressure |
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| 37. |
Name a substance that can be used as an antiseptic as well as a disinfectant. |
| Answer» SOLUTION :PHENOL. (0.2% solution ANTISEPTIC and 1% solution DISINFECTANT) | |
| 38. |
Name a chemical test to distinguish between the following. (i) 2-Pentanone, 3-Pentanone (ii) Acetone, acetaldehyde (iii) Benzaldehyde, butanal |
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Answer» SOLUTION :(i) IODOFORM TEST (ii) Tollens test (iii) Bendicts test. |
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| 39. |
Name a cell that is suitable for low current devices like hearing aids. |
| Answer» SOLUTION :MERCURY CELL | |
| 40. |
Name a catalyst used in the manufacture of sulphuric acid by contact process. |
| Answer» SOLUTION :VANADIUM PENTOXIDE | |
| 41. |
Name (A), (B), (C )…. In the following equations |
Answer» SOLUTION : 
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| 42. |
Nalorphene (C_19H_21NO_3) , similar to morphine, is used to combat withdrawal symptoms innarcotic users. Dose of nalorphene generally given is 1.5 mg. Calculate the mass of 15 xx 10^(-3) maqueous solution required for the above dose. |
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Answer» Solution :`1.5 xx 10^(-3)`m solution MEANS `1.5 xx 10^(-3)` mole of nalorphene is dissolved in 1 kg of WATER. Molar mass of `C_19H_21NO_3 = 19 xx 12 + 21 + 14 + 48 = 311 g "mol"^(-1)` ` therefore1.5 xx 10^(-3) `mole of `C_19H_21NO_3` contains ` = 1.5 xx 10^(-3) xx 311 g = 0.467g = 467 mg` of ` C_19H_21NO_3` Mass of solution = 1000 g + 0.467 g = 1000.467 g For 467 mg of nalorphene, solution REQUIRED = 1000.467 g For 1.5 mg of nalorphene, solution required =`(1000.467)/(467) xx 1.5 = 3.21 g ` |
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| 43. |
Nalorphene (C_(19)H_(21)NO_(3)), similar to morphine, is used to combat withdrawl symptoms in narcotic users. Does of nalorphene generally given is 1.5 mg. Calculate the mass of 1.5xx10^(-3)m aqueous solution required for the above does. |
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Answer» Solution :`1.5xx10^(-3)" m solution means that "1.5xx10^(-3)" moles of NALORPHENE is dissolved in 1 kg of WATER."` `"Molar MASS of "C_(19)H_(21)NO_(3)=19xx12+21+14+48="311 g mol"^(-1)` `therefore""1.5xx10^(-3)" mole of "C_(19)H_(21)NO_(3)=1.5xx10^(-3)xx"311 g = 0.467 g = 467 mg"` `therefore"Mass of solution = 1000 g + 0.467 g = 1000.467 g"` Thus, for 467 mg of nalorphene, solution REQUIRED= 1000.467 g `therefore` For 1.5 mg of nalorphene, solution required `=(1000.467)/(467)xx1.5=3.21g`. |
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| 44. |
Nalophene (C_(19)H_(21)NO_(3)), similar to morphine, is used to combat withdrawal symptoms in narcotic users. Dose of nalorphene generally given is 1.5 mg. Calculate the mass of 1.5xx10^(-3) m aqueous solution required for the above dose. |
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Answer» Solution :The molar MASS of nalorphene `C_(19)H_(21)NO_(3)` is given as : `19xx12+21xx1+1xx14+3xx16` = 311 g `mol^(-1)` In `1.5xx10^(-3)`m aqueous solution of nalorphene, 1 kg (1000 g) of water CONTAINS `= 1.5xx10^(-3)` mol of nalorphene i.e., `= 1.5xx10^(-3)` = 311 g = 0.4665 g of nalorphene Therefore, TOTAL mass of the solution `= (1000+0.4665)g` = 1000.4665 g This implies that the mass of the solution containing 0.4665 g of nalorphene is 1000.4665 g. Therefore, mass of the solution containing 1.5 mg of nalorphene is : `= (1000.4665xx1.5xx10^(-3))/(0.4665)` = 3.22 g Hence, the mass of aqueous solution required is 3.22 g. |
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| 45. |
NalO_(3) reacts with NaHSO_(3) according to equation lO_(3)^(-) + 3HSO_(3)^(-) to l^(-) + 3H^(+) + 3SO_(4)^(2-)The weight of NaHSO_(3) required to react with 100 ml of solution containing 0.58 gm of NalO_(3) is |
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Answer» `5.2` GM `W_(NaHSO_(3)) = (0.58 xx 6 xx 1000 xx 104)/(198 xx 1000) = 4.57` |
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| 46. |
NAHSO_(3) + [X] ("excess") + H_(2)O rarr NaHSO_(4) + HI [X] + Na_(2)S_(2)O_(3) rarr Nal + [Y] Identify X and Y ? |
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Answer» SOLUTION :`X = I_(2)` `Y = Na_(2)S_(4)O_(6)` |
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| 47. |
NaHSO_(4) + NaCI overset(823K)(rarr) A + B Identify A and B. |
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Answer» `Na and HCI` |
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| 48. |
NaHSO_3overset(NaCO_3)to(A)underset(Delta)overset("Element S")to(B)overset(I_2)to( C) Find out the oxidation state of sulphur in the compound (A) to ( C).Give average value without sign, if the compound formed has more than one sulphur atoms. Does not consider the decimal.For example if the value is 3.5 than neglact the decimal and consider it as 35 |
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Answer» (B)`Na_2S_2O_3` (C )`Na_2S_4O_6` `NaHSO_3+Na_2CO_3toNa_2SO_3(A)+H_2O+CO_2` `Na_2SO_3+Soverset(DELTA)toNa_2S_2O_3`(B) `2Na_2S_2O_3+I_2toNa_2S_4O_6`(C )+2NaI (A)`SO_3^(2-)`, x+3(-2)= -2 x=6-2=4 (B)`S_2O_3^(2-)`, 2x+3(-2)= -2 2x=6-2=4 x=2 (C )`S_4O_6^(2-)`, 4x+6(-2)= -2 4x=12-2=10 x=10/4 =2.5 |
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| 49. |
NaHSO_(4) is reacted with NaCl at 823K. The liberated gas is reacted with Ca_(3)P_(2) to form CaCl_(2) and X. Which one of the following is X? |
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Answer» `PH_(3)` |
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| 50. |
NaHSO^(3) is usedas |
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Answer» antacids |
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