Saved Bookmarks
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. |
Propan on aldol condensation with aqueous K_(2)CO_(3) gives mainly : |
|
Answer» 3-hydroxylbutanal |
|
| 2. |
Propan-2-ol on reacting with Cl_2 produces : |
|
Answer» Trechloroethanal |
|
| 3. |
Propan-1-ol may be prepared by the reaction of propene with |
|
Answer» `H_3BO_3 ` |
|
| 4. |
Propan-1-ol is prepared from Propene by ….. |
|
Answer» `H_(2)//H_(2)SO_(4)` |
|
| 5. |
Propan-1 - ol and Propan-2- ol can be chemically distinguished by which reagent? |
| Answer» Solution :Oxidation with `K_2Cr_2O_7` | |
| 6. |
Propan-1-ol and propan-2-ol can be best distinguished by |
|
Answer» OXIDATION with ALKALINE `KMnO_4` FOLLOWED by reaction with Fehling's solution Primary alcohols are oxidised to acids by alkaline `KMnO_(4)`, acidified dichromate and concentrated `H_2 SO_4` but with Cu it gives only aldehydes . |
|
| 7. |
Propan-1-ol and Ethanol is distinguished chemically by … |
|
Answer» LUCAS test |
|
| 8. |
Prop1 ,3 - diphenyl2 - en - 1 - one is crossed condensation product. Which is obtained from |
|
Answer» BENZOPHENONE |
|
| 9. |
Propadiene, C_3H_4 molecule contains: |
|
Answer» TWO`sp^2` and ONE sp-hybrid carbon |
|
| 10. |
Proof spirit contains about : |
|
Answer» `48%` alcohol by weight |
|
| 11. |
Prontosil has similar structure with ? |
|
Answer» sulphayridine |
|
| 12. |
Progestogens and oestrogens are used as: |
|
Answer» Antacids |
|
| 13. |
Prolonged deficiency of nicotinic acid (niacin) in human diet leads to: |
|
Answer» Beri-Beri |
|
| 14. |
Progesterone and estrogen are useful for...... |
|
Answer» Antacids |
|
| 15. |
Products X, Y and Z are respectively: |
|
Answer»
`2HCOOH+[O]overset(dil. H_(2)SO_(4))rarr {:(COOH),(|),(COOH):}+H_(2)O` |
|
| 16. |
Progesterone is a: |
|
Answer» STEROID hormone |
|
| 17. |
Products with stereochemical relation |
|
Answer» Enantiomers |
|
| 19. |
Products of the following reaction CH3.C ≡C.CH2 CH3on reaction with (1) O3+ (2) hydrolysis givesare: |
|
Answer» `CH_(3)COOH + CO_(2)` |
|
| 20. |
Products of the reaction which is given below will be CH_(3)-underset(CH_(3))underset("|")"C "=CH-CH_(3)overset((i)OsO_(4)(ii)aq. NaHSO_(3))underset((iii)NalO_(4))rarr |
|
Answer» VIC diol |
|
| 21. |
Products of the following reaction ..........CH_3C -="CC"H_2CH_3 underset((ii)HOH)overset((i) O_3)(to) ? |
|
Answer» `CH_3CHO + CH_3CH_2CHO` |
|
| 22. |
Products of the following reaction Me_(2)C = CHCH_(3) underset((ii)(CH_(3))_(2)S)overset((i)O_(3))rarr ? are : |
|
Answer» `CH_(3)CHO + CH_(3)CO OH` 
|
|
| 23. |
Products of electrolysis depends upon which factors? Justify with suitable examples. |
|
Answer» SOLUTION :(i) Products of electrolysis depends on the nature of material being electrolysed. (ii) The type of ELECTRODES being used if the electrode is inert (e.g., platinum or gold), it does not participate in the chemical reaction and acts only as source or SINK for electrons. on the other hand, if the electrode is reactive it participates in the electrode reaction. Different oxidising and reducing species present in the electrolytic cell and their standard electrode potentials: species with more `E^(THETA)` value get REDUCED and species with less `E^(Theta)` value get oxidized. e.g., : In electrolysis of NaCl in inert electrode, `Na^(+) and H_(2)O`, two species are available near cathode, but only `H_(2)O` get reduced and `Na^(+)` does not get reduced. e.g., in electrolysis of `H_(2)SO_(4)` solution in presence of Pt electrode, here oxidation of water is carried out and it will gives `O_(2)` while `SO_(4)^(2-)` doesn.t get oxidized. |
|
| 24. |
Products of reactions (I) and (II) are |
|
Answer» CIS , cis |
|
| 25. |
"Products obtained near the electrodes by electrolysis depends on the electrodes"-explain by suitable examples. |
|
Answer» Solution :(i) and (ii) both are possible. The reaction which has more `E^(Theta)` value gives reaction. HENCE , reaction (ii) occurs near CATHODE. So, `H^(+)` ions of water get reduced and produce `H_(2)` gas. * So, on electrolysis of equeous solution of NaCl, `H_(2)` gas is obtained near cathode and NaOH in the solution by following reaction. (iii) `H_(2)O_((L))+e^(-)to(1)/(2)H_(2(g))+OH_((aq))^(-)` * So reaction, (i)+(ii)=reaction (iii) and spectator ions are produced near to cathode by the following reactions. (iv) `Na_((aq))^(+)+H_(2)O_((l))+e^(-) to (1)/(2)H_(2(g))+OH_((aq))^(-)+Na^(+)` * Experimentally, pink colour obtained with phenolphthalein near cathode gives the confirmation of presence of NaOH solution. |
|
| 26. |
Products is |
Answer» 
|
|
| 28. |
Products formed on heating Pb(NO_(3))_(2) are |
|
Answer» `PbO,N_(2),O_(2)` |
|
| 30. |
Product(s) in the above reaction is (are) |
|
Answer» ` (##AKS_NEO_CAO_CHE_XII_V02_P03_APP_E02_038_O01.png" WIDTH="30%"> |
|
| 31. |
Products form by following reactions are |
|
Answer»
- ELECTROPHILE is dichlrocarbene -Reimer-Tiemann Reaction 
|
|
| 32. |
Products B and C in the following reaction are CH_(3)- underset(underset(Cl)(|))(C)H-overset(overset(CH_(3))(|))(C)H-CH_(3) overset(KOH(alc. ) )(rarr) A overset( (i) O_(3)) underset( (ii) H_(2) O //Zn)(rarr) B +C |
|
Answer» `CH_(3)-COOH and CH_(3) CH_(3) -COCH_(3)` |
|
| 33. |
Products formed are |
|
Answer»
|
|
| 34. |
Products A and B in the following reaction are respectively (AAK_MCP_37_NEET_CHE_E37_042_Q01) |
|
Answer» `(AAK_MCP_37_NEET_CHE_E37_042_A01)` |
|
| 35. |
Products A, B and C in the following reactions are (AAK_MCP_36_NEET_CHE_E36_013_Q01) |
|
Answer»
|
|
| 37. |
Products A, B are respectively |
|
Answer» `CH_3COCH_3,CH_3CHO` |
|
| 38. |
Production of a green edged flame on igniting the vapours evolved by heating a given inorganic salt with a few mL of ethanol and conc. H_2 SO_4 indicates the presence of |
|
Answer» TARTRATE |
|
| 40. |
Production of a green edged flame on igniting the vapours evolved by heating a given inorganic salt with few mL of ethyl alcohol and conc. H_2 SO_4 indicates the presence of a |
|
Answer» Tartarate `H_(3)BO_(3)+3C_(2)H_(5)OH overset(Delta)to underset("ETHYL borate")((C_(2)H_(5))_(3)BO_(3))+3H_(2)O` Ethyl borate is volatile and burns with a green edged flame. |
|
| 41. |
Product (X), X is: |
|
Answer»
|
|
| 45. |
Product (X) is: |
|
Answer»
|
|
| 46. |
Product will be |
|
Answer»
|
|
| 47. |
Product The correct statements about products is/are |
|
Answer» The PRODUCTS are optical inactive 
|
|
| 48. |
Product the major product in the followingreactions: i. C_(6) H_(6) + (CH_(3))_(2)CHCH_(2) OH overset(H_(2)SO_(4))(rarr)... ii. C_(6) H_(5) C_(2) H_(5) overset((i) Br_(2) "heat light")underset((ii) NaCN)(rarr).... |
Answer» SOLUTION :
|
|
| 49. |
Product. Product is : |
|
Answer» OSAZONE |
|
