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. |
(i)N_(2(g)) + O_(2(g)) hArr 2NO_((g)) (ii)2NO_((g)) hArr N_(2(g)) + O_2 In these , the equilibrium constant are K_1 and K_2 at definate temperature then give relation if K_1 and K_2 ? |
| Answer» SOLUTION :`K_1=1/K_2` | |
| 2. |
In ZnS, S^(2-) ions from ________ structure while Zn^(2+) ions are present in _______ voids. |
|
Answer» |
|
| 3. |
In ZnNH_(4)PO_(4) , the element with minium and maximum oxidation states are "____________________". |
|
Answer» <P>`N(-3) , P ( + 5)` |
|
| 4. |
In Zeigler-Natta polymerisation of ethylene the active species is |
|
Answer» `AlCl_(3)` |
|
| 5. |
In X-ray diffraction experiment at which one of the following path difference between the two waves , destructive interference is observed (gamma=wavelength of x-rays) |
|
Answer» `LAMBDA` |
|
| 6. |
In Wurtz reaction, the reagent used is |
|
Answer» Na |
|
| 7. |
In Wurtz fittig reaction, chlorobenzene is converted to ………………….. by reacting it with ethyl chloride. |
| Answer» SOLUTION :ETHYLBENZENE | |
| 8. |
In Witting reaction, a cyclic intermediate is formed called oxaphosphetane. The no. of atoms involved in the ring formation. |
Answer»
|
|
| 9. |
In winter season, special type of clouds called polar stratospheric clouds are formed over Antarctica. As a result, less depletion of ozone layer takes place due to reactions |
|
Answer» `CIONO_(2)+H_(2)O rarr HOCI+HNO_(3)` |
|
| 10. |
In which volume ratio NH_(4)Cl and NH_(4)OH solutions (each 1 M ) should be mixedto get a buffer solution of pH 9.80 ? (pK_(b) "of" NH_(4)OH=4.74) |
|
Answer» `1:2.5` `V_(1)` mL of 1 M `NH_(4) Cl = V_(1)` millimole `V_(2)` mL of 1 M `NH_(4)OH=V_(2)` millimole `V_(2)` mL of 1 M `NH_(4) OH = V_(2)` millimole pH = 9.80. Hence, pOH = 14 - 9.80 = 4.20 Now, pOH = `pK_(b) + log .(["Salt"])/(["Base"])` `:.4.20 = 4.74 + log .(V_(1))/(V_(2))` or `log. (V_(1))/(V_(2))= - 0.54 = BAR(1) . 46 :. (V_(1))/(V_(2))=0.29 = (1)/(3.5)` |
|
| 11. |
In which type of molecule, the electron of pi bond are delocatised? |
| Answer» SOLUTION :The molecule in which `pi` BOND is ARRANGE with alternate carbon and lone pair is PRESENT on other ATOM and `pi`-electron are decolalised | |
| 12. |
In which type of 3D arrangement have 1^(st) and IV layer's of sphere are identical |
|
Answer» |
|
| 13. |
In which substance the elements presents in them show new type of properties by losing their own properties ? |
|
Answer» `CO_(2)` |
|
| 14. |
In which substance the constituents retains their own characteristic properties ? |
|
Answer» Brass |
|
| 15. |
In which substance oxidation number of oxygen is -1 ? |
|
Answer» `KO_(2)` `therefore2x=-2" "thereforex=-1` |
|
| 16. |
In which state of matter, hydrogen bond can exist? |
|
Answer» Only SOLID |
|
| 17. |
In which state of matter do not have definite volume and definite shape ? |
|
Answer» Solid |
|
| 18. |
In which state matters have definite volume and definite shape ? |
| Answer» Answer :A::D | |
| 19. |
In which species the hybrid state of central atom is/are sp^(3)d? |
|
Answer» `I_(3)^(+)` |
|
| 20. |
In which solution 1 mole acid in 1 litre give 1 N solution ? |
|
Answer» `H_(2)SO_(4)` |
|
| 21. |
In which SO_(2) acts as oxidant, while reacting with |
|
Answer» acidified `KMnO_4` |
|
| 22. |
In which set of diatomic species the bond order is 2.5 ? |
|
Answer» `No,CN,CN^(-)` |
|
| 23. |
In which set from the following the oxidation number of oxygen is in increasing form ? |
|
Answer» `RbO_(2)ltOF_(2)ltO_(3)ltBaO_(2)` |
|
| 24. |
In which season the depletion of ozone on Antarctica takes place and when is it replenished ? |
| Answer» Solution :During spring SEASON (i.e., in the months of September and OCTOBER), depletion of OZONE takes place and after spring (i.e., in the month of NOVEMBER). it is replenished | |
| 25. |
In which season and what time of the day, there is photochemical smog? |
| Answer» SOLUTION :In SUMMER in the AFTERNOON | |
| 26. |
In which season and what time of the day, there is 'London smog' |
| Answer» SOLUTION :In WINTER during the MORNING HOURS | |
| 27. |
In which region of atmosphere, lowest temperatures are observed? |
|
Answer» Troposphere |
|
| 29. |
In which reaction(s) blood red colouration is observed in product: |
|
Answer» `FeSO_(4) overset(H_(2)O_(2))underset(H^(+))RARR.... overset(KCN)rarr` Product |
|
| 30. |
In which reaction the product following anti markonikoff rule is observed : |
|
Answer» `CF_3CH=CH_2overset(HCL)to` |
|
| 32. |
In which reactions hydrogen is acting as an oxidizing agent? |
|
Answer» with iodine to give hydrogen iodie |
|
| 33. |
In which reaction, hydrogen peroxide neither acts as an oxidising agent nor as a reducing agent ? |
|
Answer» `PbS+H_(2)O_(2)to` |
|
| 34. |
In which reaction incorrect products have been reported. |
|
Answer» `CH_2=CH-CHO overset(HCl(g)(-10^@C))to undersetunderset(CL)(|)CH_2-CH_2-CHO` |
|
| 35. |
In which reaction H_2O_2acts reducing agent ? |
|
Answer» `Ag_(2)O +H_2O_2 + 2AG + H_(2)O + O_2` |
|
| 36. |
In which reaction at equilibrium will the amount kof reactants present increase with an increase in the container volume? |
|
Answer» `C(s)+CO_(2)(g) hArr 2CO(g)` |
|
| 37. |
In which range the value of pH and pOH of aqueous solution. |
| Answer» SOLUTION :1.0 to 14.0 | |
| 38. |
In which pure form does corbon exist in nature ? |
| Answer» SOLUTION :Fulleren. | |
| 39. |
In which process, fused sodium hydroxide is electrolysed for extraction of sodium? |
|
Answer» CASTNER's process |
|
| 40. |
In which phenomenon Entropy decreases ? |
|
Answer» MELTING of ice |
|
| 41. |
In which period, are there the maximum number of artificial radio active elements ? |
| Answer» SOLUTION :In `7^(TH)` PERIOD. | |
| 42. |
In which part of the atmosphere, ozone is formed and how? |
| Answer» SOLUTION :OZONE is FORMED in the STRATOSPHERE. | |
| 43. |
In which pair, the stronger bond is found in the first species? a. O_(2)^(-),O_(2) b. N_(2),N_(2)^(+) c. NO^(+),NO_(-) |
|
Answer» a only |
|
| 44. |
In which pairs first compound is stronger acid than the second ? |
|
Answer» ADIPIC acid, succinic acid |
|
| 45. |
In which pairof species, both species have similargeometry ? |
|
Answer» `CO_(2), SO_(2)` `SO_(3)^(2-) to ` pyramidal , `SO_(4)^(2-), ClO_(4)^(-) to ` bond TETRAHEDRAL. |
|
| 46. |
In which pair most efficient packing present ? |
|
Answer» HCP and bcc |
|
| 47. |
In which pair most efficientpacking is present ? |
|
Answer» hcp and bcc |
|
| 49. |
In which one of the following, the dispersed phase is a liquid ? |
|
Answer» WHIPPED crean |
|