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. |
The chemical composition of slag formed during smelting process in the extraction of Cu is |
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Answer» `Cu_2 O+FeS` |
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| 2. |
The chemical composition of Carnallite is: |
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Answer» `KCl.MgCl_2.6H_2O` |
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| 3. |
The chemical change in DNA molecule that could lead to synthesis of proteins with an altered amino acid sequence is called : |
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Answer» REPLICATION |
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| 4. |
The chemical change in a DNA molecules that leads to the synthesis of proteins with different amino acids sequence is called, |
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Answer» Allergy |
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| 5. |
The chemical change in a DNA molecule that leads to the synthesis of proteins with different amino acids sequence is called |
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Answer» Allergy |
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| 6. |
The chemical basis of heredity is called |
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Answer» DNA |
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| 7. |
The chelating ligand used to remove excess of copper and iron in chelate therapy is |
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Answer» D - PENICILLAMINE |
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| 8. |
The cheap and having hight melting point compound used in furnace is |
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Answer» PbO |
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| 9. |
The cheap and high melting point compound used in furnace lining is : |
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Answer» PbO |
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| 10. |
The charring of sugar takes places when treated with con. H_2SO_4. What is the type of reaction involved in it" |
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Answer» Addition REACTION |
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| 11. |
The charring product formed when C_6H_12O_6 is heated with conc.H_2SO_4 is due to : |
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Answer» OXIDATION |
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| 12. |
The charge /size ratio of cation determines its polarising power. Which one of the following sequences represents the increasing order of the polarising power of the cationic species, K^(+), Ca^(2+), Mg^(2+), Be^(2+)? |
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Answer» `Ca^(2+)LTMG^(2+)ltBe^(2+)ltK^(+)` As the size of the given cations DECREASES as `K^(+)gtCa^(2+)gtMg^(2+)gtBe^(2+)` Hence polarising power is increases as `K^(+)ltCa^(2)ltMg^(2+)ltBe^(2+)` |
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| 13. |
The charring of sugar takes places when treated with con. H_(2)SO_(4). What is the type of reaction involed in it'' |
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Answer» ADDITION reaction |
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| 14. |
The charging of sugar , when treated with conc. H_(2)SO_(4), is due to |
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Answer» Oxidation |
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| 15. |
The charge required for the reduction of 1 mol of MnO_(4)^(-) to MnO_(2) is |
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Answer» 1 F |
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| 16. |
The charge required for the reduction of 0.4 mol of K_2Cr_2O_7 toCr^(3+) ions is |
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Answer» 0.6 F `(0.4 xx 6 xx 96500)/(1) = 2.4 xx 96500` |
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| 17. |
The charge required for the reduction of 1 mole of MnO_(4)^(-)to MnO_(2) is |
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Answer» 1 F 3F charge will be required to refuse 1 MOLE of `MnO_4 ` to `MnO_2`. |
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| 18. |
The charge required for reducing 1 mole of MnO_(4)^(-)" to "Mn^(2+) is: |
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Answer» `1.93xx10^(5)C` |
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| 19. |
The charge required for the oxidation of one mole of Mn_3O_4 "to " MnO_4^(2-) in alkaline medium is_____ |
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Answer» 10 |
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| 20. |
The charge on the atom containing 8 protons, 9 neutrons and 9 electrons is |
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Answer» -1 |
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| 21. |
The charge on positron is equal to the charge on which one of the following |
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Answer» PROTON |
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| 22. |
The charge on one gram ion of Al^(3+) ion is: |
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Answer» `(1)/(27)N_(A)xxe` COULOMB |
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| 25. |
The charge of the Blast Furnace consists of |
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Answer» FE - ORE + COKE + LIME stone |
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| 26. |
The charge of how many coulomb is required to deposit 1.0 g of sodium metal (molar mass 23.0 g mol^(-1)) from solution ions is- |
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Answer» 2098 |
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| 28. |
The charge of an electron is 1.6xx10^(-19)C. How many electrons pass through the cross section of a copper wire carrying 10^(-16) amp in 1 second ? |
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Answer» 300 |
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| 29. |
The charge of an electron is 1.6 xx 10^(-19) coulomb. How many electrons per seconds pass through a cross section of a Cu wir carrying 10^(-6) amp ? |
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Answer» 300 |
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| 30. |
The charge ( in coulombs) on N_(3)^(+)ions is ,___________. |
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Answer» `4.8 XX 10^(19)` |
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| 31. |
What is the charge in Coulombs on Cu^(2+) ion? |
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Answer» `3.2xx10^(-19)` |
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| 32. |
The charge carried by 1 millimole of M^(n+) ions is 193 coulombs. The value of n is |
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Answer» 1 Hence, n =2 |
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| 33. |
The charge for the reduction of 1 mole of Cr_2O_7^(2-) ions to Cr^(3+) is : |
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Answer» 96500C |
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| 34. |
The charge balance equation of species in 0.100 M acetic solution is given by |
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Answer» `[H^(+)] = [OH^(-)]` |
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| 35. |
The charecteristic property shown by transition elements is : |
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Answer» They SHOW VARIABLE valency |
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| 36. |
The charcoal maintained at 100^(@)C absorbs |
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Answer» NE and KR |
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| 37. |
The charcoal maintained at-100^(@)C absorbs |
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Answer» Ne and KR |
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| 38. |
The characterstic property of solution is (a) formation of solution is physical change (b) solute and solvent in the solution can beseparated by filteration (c)solute and solvent in the solution can be separated by decantation (d) solution can be represented with a chemical formula |
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Answer» a,B |
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| 39. |
The characterstic property of solution is (a) Formation of solution is physical change (b) Solute and solvent in the solution can be separated by filtration (c) Solute and solvent in the solution can be separated by decantation (d) Solution can be represented with a chemical formula |
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Answer» a,B |
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| 40. |
The characteristic property of detergent : |
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Answer» is it contains both hydrophilic and hydro-phobic groups |
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| 41. |
the characteristic reactions of aldehydes and ketones are_____reactions. |
| Answer» SOLUTION :NUCLEOPHILIC ADDITION. | |
| 42. |
Characteristic reactions of alkyl halides are |
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Answer» ELECTROPHILIC substitution REACTIONS |
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| 43. |
The characteristic oxidation number of metals in free state is: |
| Answer» Answer :A | |
| 44. |
The characteristic odour of lower phenol is ______. |
| Answer» Answer :A | |
| 45. |
The characteristic odour of lower phenols is _______. |
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Answer» carbolic ACID |
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| 46. |
The characteristic not related to alkali metal is |
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Answer» their ions are isoelectronic with noble gases The energy binding the ATOMS in the crystal lattices of these metals is relatively low due to presence of only one electron in the valence shell. Thus alkali metals have low melting points. Alkali metals are highly electropositive thus, they have low electronegativity. The alkali metals have large size and the outermost electron is far from the nucleus and tus have relatively low ionisation energies. |
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| 49. |
Thecharacteristicfunctiongrouppresentin secondaryamine is |
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Answer» amino
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