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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.
| 2. |
Name the catalyst used in commercial method of preparation of phenol. |
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Answer» Silica 
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| 3. |
Name the catalyst used in commerical method of preparation of phenol. |
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Answer» SILICA |
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| 4. |
Name the calcium salt formed in the blast furnace during smelting of haematite ore. |
| Answer» SOLUTION :CALCIUM silicate `(CaSiO_(3))` (slag). | |
| 5. |
Name the biocatalyst involved in the conversion of glucose into ethanol and carbon dioxide. |
| Answer» Solution :Zymase is the bixatalyst INVOLVED in the CONVERSION of GLUCOSE into ETHANOL and · carbon DIOXIDE. | |
| 6. |
Name the building block of zeolites. Why zeolites have high porosity? |
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Answer» Solution :(i) Zeolites have a three dimensional crystalline structure LOOKS like a HONEYCOMB consisting of a NETWORK of interconnected tunnels and cages. (ii) Water molecules moves freely in and out of these pores HENCE they are HIGHLY porous. |
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| 8. |
Namethe based presentin DNA . Whichone of theseis not present in RNA ? |
| Answer» Solution :DNA containsfour bases , viz , ADENINE (A), GUANINE (G), cytosin (C) , THYMIN (T) .RNA alsocontain four bases,firstthree bases are sameas in DNA butthe FOURTH one isuracil. (U). | |
| 9. |
Namethe bases present in RNA . Whichone of thesein notpresentin DNA. |
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Answer» SOLUTION :RNA contains FOUR BASE : (i) Adenine (A) . (ii) GUANINE (G) . (iii) Cytosine (C) . (iv) Uracil (U) Uracil (U) is absent in DNA. |
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| 10. |
Name the antioxidant used in wine and beers. |
| Answer» Solution :`SO_2` and SULPHITES (sodium SULPHITE and sodium metabisulphite) is used as ANTIOXIDANTS for wine and beers | |
| 11. |
Name the antiseptic agents present in dettol. |
| Answer» SOLUTION :CHLOROXYLENOL and Terpinol. | |
| 12. |
Name the antioxidants commonly used to increase the storage of butter. |
| Answer» SOLUTION : BHA (Butylated HYDROXY ANISOLE) | |
| 13. |
Name the anomers of glucose. How do they differ and what is the chief consequence of this difference? |
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Answer» Solution :The ANOMERS of glucose are `ALPHA`-D glucose and `BETA`-D glucose. `alpha`-D glucose and `beta`-D glucose differ in the orientation of hydroxyl GROUP at `C_1` carbon atom. These two exist in different crystalline form and have different melting points. 
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| 14. |
Name the antioxidant commonly used to increase the storage life of butter. |
| Answer» SOLUTION :The ADDITION of BHA butylated hydroxyanisoleincreases the storage life of butter from months to YEARS | |
| 15. |
Name the anode, cathode and electrolyte used in lithium - ion Battery. |
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Answer» Solution :(i) Anode : Porus graphite (II) Cathode : Transition METAL OXIDE such as `CoO_(2)`. (iii) Electrolyte : Lithium SALT in an organic solvent. |
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| 16. |
Name the anions whch giive brown fumes on reacting with dilute/conc. H_(2)SO_(4) |
| Answer» Solution :With dilute `H_(2)SO_(4),NO_(2)^(ɵ)` ion gives BROWN FUMES. With CONC. `H_(2)SO_(4)` both `Br^(ɵ)` and `NO_(3)^(ɵ)` ions given brown fumes. | |
| 18. |
Nametheaminoacidwhichcontainsulphurandbenzenering. |
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Answer» SOLUTION :Sulphurcontainingaminoacidiscysteine. Benzeneringcontainingaminoacid(aromaticamino ACID )istyrosine. |
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| 19. |
Name the amine which gives yellow liquid with nitrous acid. |
| Answer» Solution :The amine which gives yellow LIQUID with NITROUS ACID is DIETHYL amine. | |
| 20. |
Name the allotropes of oxygen. |
| Answer» SOLUTION :DIOXYGEN `(O_(2))` and trioxygen or OZONE `(O_(3))` | |
| 21. |
Name the alkyl halide which can be used to prepare methane and ethane in single steps. |
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Answer» <P> Solution :Methyl iodide `(CH_(3)-I).""underset("Methyl iodide")(CH_(3)-I)+HI underset("REDUCTION")overset("Red P, "Delta)to underset("Methane")(CH_(4))+I_(2)``underset("Methyl iodide")(2CH_(3)-I)+2Na underset("Wurtz reaction")overset("Dry ether")to underset("Ethane")(CH_(3)-CH_(3))+2NaI` |
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| 22. |
Name the alkene with molecular formula C_(10)H_(20) |
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Answer» Dodecene |
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| 23. |
Name the alkene which will yield 1-chloro-1-methylcyclohexane by its reaction with HCl. Write the reactions involved. |
Answer» SOLUTION :TWO ALKENES are POSSIBLE. These are: 
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| 24. |
Name the alkene formed when ethyl bromide is heated with alcoholic KOH. |
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Answer» `H-underset(H)underset(|)overset(H)overset(|)(C)-underset(Br)underset(|)overset(H)overset(|)(C)-H underset(DELTA)overset("Alc. KOH")to H-underset("Ethene")(overset(H)overset(|)(C))-H+KBr+H_(2)O` |
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| 25. |
Name the aldehyde which does not give Fehling's solution test. |
| Answer» SOLUTION :BENZALDEHYDE. | |
| 26. |
Name the alcohol present in pyroligneous acid . |
| Answer» SOLUTION :`CH_3OH` | |
| 27. |
Name the aerosole which causes the depletion of ozone. |
| Answer» Solution :FREONS CHLOROFLUOROCARBONS (FCS)used in AEROSOLE sprays cause the depletion of OZONE. | |
| 28. |
Name the adsorbent used to remove of colouring matter from solution. |
| Answer» SOLUTION :ACTIVATED CHARCOAL. | |
| 29. |
Name the action of the following on the human body: (a) Aspirin (b) Penicillin (c) Phenacetin (d) Morphine (e) Analgin (f)Luminal (g) Seconal (h) Streptomycin |
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Answer» SOLUTION :(a) Aspirin is an analgesic which is used for relieving pain. It also PREVENTS heart attack. (b) Penicillin is an antibiotic used against large number of infections caused by various cocci, gram positive bacteria, etc. It is an effective DRUG for pneumonia, bronchitis, SORE throat. (c) Phenacetin is an antipyretic drug used to bring down the temperature of body in high fever. (d) Morphine is an strong analgesic. It is a narcotic drug. It cause addiction. It gives relief from acute pain, induce sleep and unconsciousness in higher doses. (e) Analgin is an antipyretic and analgesic. It brings down the temperature of body in fever and give relief from pain. (f) Luminal produces sleep and it is a habit forming drug. It is also called a sedative tranquilliser. (g) Seconal is an antidepressant (tranquiliser). Sometimes the patients are highly depressed and loses self-confidence. This drug produces feeling of well being and improved efficiency. (h) Streptomycin is used as an antibiotic. It is used to CURE tuberculosis. |
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| 30. |
Name the action of : Aspirin |
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Answer» Solution :(i) Aspirin is used as analgesic as pain releiver. It also prevents heart attack. (ii) Pencillin is an ANTIBIOTIC to prevent infection . It is used for pneumonia , bronchitis etc. (iii) Phenacetin is an antipyretic drug used to BRING down the temperature of ferveral body. (iv) MORPHIN is a STRONG analgesic. They are narcotics. They gives RELIEF from acute pain, induce sleep etc. |
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| 33. |
Name the first noble gas compound prepared by Neil Bartlett? |
| Answer» Solution :`Xe[PtF_(6)]` - (Xenon hexafluoroplatinate (V). | |
| 34. |
Name the 1st compound of a noble gas reported by Bartlett. |
| Answer» SOLUTION :XENON hexafluoroplatinate `XE^+ [PtF_6]^-` | |
| 35. |
Name substance which can be used as an antiseptic as well as disinfectant. |
| Answer» Solution :0.2% solution of PHENOL ACTS an ANTISEPTIC while its 1% solution acts as a DISINFECTANT | |
| 36. |
Name some reducing agents used to convert metal oxides to metal. |
| Answer» Solution :METAL OXIDES to metal : Carbon, carbon monoxide, hydrogen, aluminium and METALS LIKE sodium. | |
| 37. |
Name some factors which cause soil pollution. |
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Answer» Solution :(i) Indiscriminate use of FERTILIZERS. (ii) Indiscriminate use of pesticides . (iii) Dumping of LARGE QUANTITIES of WASTE materials. (iv) DEFORESTATION. |
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| 38. |
Name some common methods of the ore concentration. |
| Answer» Solution :GRAVITY separation, FROTH flotation, LEACHING, MAGNETIC separation. | |
| 40. |
Name reagents required for preparation of methyl orange indicator (no reaction). |
| Answer» Solution :Reagents required are: (i) sulphanilic acid (ii) N,N-dimethylaniline, (III) `NaNO_(2),HCl and ` (IV) a BASE. | |
| 42. |
Name oxoacids of chlorine and their formulae. |
Answer» Solution : (a) OXOACIDS of halogens. Fluorine forms only one oxoacid hypofluorous acid, HFO. The outer halogens FORM several oxoacids though some of them can be isolated in the form of their SALTS. The important oxoacids of halogens are given in Table.  (b) Acidic strength `(i) HClO_4 gt HClO_3 gt HClO_2 gt HCLO(ii) HClO gt HBRO gt HIO` |
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| 43. |
Name one type of bond that bind substrates to the active sites of the enzymes. |
| Answer» SOLUTION :HYDROGEN BONDING | |
| 46. |
Name one substance which can be used as a catalyst in the formation of SO_3, from SO_2 Also give the relavent chemical equation. |
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Answer» SOLUTION :VANADIUM PENTOXIDE `(V_2O_5)`. `2SO_2 + O_2 OVERSET(V_2O_5) HARR 2SO_3` |
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| 47. |
Name one substance which can act as both analgesic and antipyretic |
| Answer» Solution :Aspirin (acetylsalicylic acid) is a CHEMICAL substance which lowers body TEMPERATURE (to normal) and also REDUCES body PAIN. Therefore it acts as both ANTIPYRETIC and analgesic. | |
| 48. |
Name one reducing and one non-reducing disaccharide. |
| Answer» SOLUTION :MALTOSE or LACTOSE (REDUCING ) , SUCROSE (non-reducing ). | |
| 49. |
name one reagent which is used for the distinction of primary, secondary and tertiary alcohols. Or What isLucas reagent? |
| Answer» SOLUTION :Lucas REAGENT (ANHYD. `ZnCl_(2)+"conc. "HCL`) | |