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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. |
The correct order of the thermal stability of hydrogen halides (H -X) is |
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Answer» The correct order of the thermal stability of hydrogen halides (H -X) is
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| 2. |
is amphoteric in nature |
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Answer» |
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| 3. |
Which of the following shows carbyl amine reaction A. Aniline B. Ethyl methyl amine C. Tertiary butyl amine D. Isopropyl amine The correct answer is |
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Answer» Which of the following shows carbyl amine reaction A. Aniline B. Ethyl methyl amine C. Tertiary butyl amine D. Isopropyl amine The correct answer is |
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| 4. |
The correct order of increasing radii are |
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Answer» The correct order of increasing radii are |
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| 5. |
KCl has higher melting point than AgCl. Why? [rAg+ ≈ rK+] |
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Answer» KCl has higher melting point than AgCl. Why? [rAg+ ≈ rK+] |
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| 6. |
For cooking the food, which of the following type of utensil is most suitable |
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Answer» For cooking the food, which of the following type of utensil is most suitable
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| 7. |
The total number of carboxylic acid groups in the final product is___ |
Answer» The total number of carboxylic acid groups in the final product is
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| 8. |
How to convert Benzene into p nitrobenzaldehyde |
| Answer» How to convert Benzene into p nitrobenzaldehyde | |
| 9. |
If the uncertainties in the measurements of position and momentum are equal, then calculate the uncertainty in the measurement of velocity (in ms−1) of particle of mass 1.21×10−18 kg. Given h = 6.6×10−34J.s π=3.1 |
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Answer» If the uncertainties in the measurements of position and momentum are equal, then calculate the uncertainty in the measurement of velocity (in ms−1) of particle of mass 1.21×10−18 kg. Given h = 6.6×10−34J.s π=3.1 |
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| 10. |
Which among the following options give the correct relationship between the edge lengths ‘a’ and the radius of a sphere ‘r’ in a body-centered cubic structure. |
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Answer» Which among the following options give the correct relationship between the edge lengths ‘a’ and the radius of a sphere ‘r’ in a body-centered cubic structure. |
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| 11. |
In which of the following reaction hydrogen peroxide is a reducing agent |
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Answer» In which of the following reaction hydrogen peroxide is a reducing agent |
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| 12. |
Generally its easy for me to understand chapters but i am extremely unable to understand haloalkanes and haloarenes what to do now? I have watched videos many times but its not helping this time. |
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Answer» Generally its easy for me to understand chapters but i am extremely unable to understand haloalkanes and haloarenes what to do now? I have watched videos many times but its not helping this time. |
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| 13. |
Which of the following structures is/are meso - 2, 3 - butane diol |
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Answer» Which of the following structures is/are meso - 2, 3 - butane diol |
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| 14. |
Chemisorption said to be irreversible but the graph between temperature and chemisorption decrease after the activation energy indicating desorption? Why? |
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Answer» Chemisorption said to be irreversible but the graph between temperature and chemisorption decrease after the activation energy indicating desorption? Why? |
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| 15. |
The IUPAC name of |
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Answer» The IUPAC name of
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| 16. |
The immediate products of C3 and C4 cycle respectively are |
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Answer» The immediate products of C3 and C4 cycle respectively are |
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| 17. |
Why in the redox titration of KMnO4 vs oxalic acid, we heat oxalic acid solution before starting the titration ? |
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Answer» Why in the redox titration of KMnO4 vs oxalic acid, we heat oxalic acid solution before starting the titration ? |
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| 18. |
The mineral that does not contain Magnesium is |
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Answer» The mineral that does not contain Magnesium is |
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| 19. |
Assertion (A) For making rubber synthetically, isoprene molecules are polymerised. Reason (R) Neoprene (a polymer of chloroprene) is a synthetic rubber. (a) Assertion and Reason both are correct statement But reason does not explain Assertion. (b) Assertion and Reason both are correct statement and Reason explains the Assertion. (c) Both assertion and reason are wrong statements. (d) Assertion is correct statement and Reason is wrong statement. (e) Assertion is wrong statement and reason is correct statement. |
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Answer» Assertion (A) For making rubber synthetically, isoprene molecules are polymerised. Reason (R) Neoprene (a polymer of chloroprene) is a synthetic rubber. (a) Assertion and Reason both are correct statement But reason does not explain Assertion. (b) Assertion and Reason both are correct statement and Reason explains the Assertion. (c) Both assertion and reason are wrong statements. (d) Assertion is correct statement and Reason is wrong statement. (e) Assertion is wrong statement and reason is correct statement. |
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| 20. |
Mark the correct order of decreasing acid strength of the following compounds. (a) V > IV > II > I > III (b) II > IV > I > III > V (c) IV > V > III > II > I (d) V > IV > III > II > I |
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Answer» Mark the correct order of decreasing acid strength of the following compounds. |
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| 21. |
Atomic radic of fluorine and neon in ˚A units are respectively given by |
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Answer» Atomic radic of fluorine and neon in ˚A units are respectively given by |
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| 22. |
Consider an ionic solid MX with NaCl structure. Construct a new structure (Z) whose unit cell is constructed from the unit cell of MX following the sequential instructions given below. Neglect the charge balance. (i) Remove all the anions (X) except the central one (ii) Replace all the face centered cations (M) by anions (x) (iii) Remove all the corner cations (M) (iv) Replace the central anion (X) with cation (M) The value of (number of anionsnumber of cations) in Z is. |
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Answer» Consider an ionic solid MX with NaCl structure. Construct a new structure (Z) whose unit cell is constructed from the unit cell of MX following the sequential instructions given below. Neglect the charge balance. (i) Remove all the anions (X) except the central one (ii) Replace all the face centered cations (M) by anions (x) (iii) Remove all the corner cations (M) (iv) Replace the central anion (X) with cation (M) The value of (number of anionsnumber of cations) in Z is |
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| 23. |
A crystalline hydrated salt on being rendered anhydrous loses 45.6% of its weight. The percentage composition of the anhydrous salt is: Al=10.5%, K=15.1%, S=24.8% and oxygen =49.6% [Molar mass of Al=27,K=39,S=32]. What is the empirical formula of the hydrated salt? |
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Answer» A crystalline hydrated salt on being rendered anhydrous loses 45.6% of its weight. |
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| 24. |
We can obtain ethylamine by Hoffmann bromamide reaction. The amide used in this reaction is: |
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Answer» We can obtain ethylamine by Hoffmann bromamide reaction. The amide used in this reaction is: |
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| 25. |
10 L of a monoatomic ideal gas at 0oC and 5 atm is suddenly released to 1 atm pressure and the gas is expanded adiabatically against the constant pressure. Find the final volume (in L) of the gas. |
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Answer» 10 L of a monoatomic ideal gas at 0oC and 5 atm is suddenly released to 1 atm pressure and the gas is expanded adiabatically against the constant pressure. Find the final volume (in L) of the gas. |
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| 26. |
Reactivity of alkyl halides towards SN1 nucleophilic substitution reaction is: |
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Answer» Reactivity of alkyl halides towards SN1 nucleophilic substitution reaction is: |
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| 27. |
Among KO2,AlO2−,BaO2,NO2+ unpaired electron is present in: |
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Answer» Among KO2,AlO2−,BaO2,NO2+ unpaired electron is present in: |
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| 28. |
Among the following compounds the maximum number of lone pair is present on the central atom of: |
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Answer» Among the following compounds the maximum number of lone pair is present on the central atom of: |
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| 29. |
Li and a proton are accelerated by the same potential then their de Broglie wavelengths λLi and λp have the ratio (assume mLi=9mp) |
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Answer» Li and a proton are accelerated by the same potential then their de Broglie wavelengths λLi and λp have the ratio (assume mLi=9mp) |
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| 30. |
The bond length of NaCl bond is 2.36×10−10 m. The measured dipole moment for NaCl is 7.552×10−30 C.m.The percentage ionic character of NaCl is: |
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Answer» The bond length of NaCl bond is 2.36×10−10 m. The measured dipole moment for NaCl is 7.552×10−30 C.m.The percentage ionic character of NaCl is: |
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| 31. |
The difference in the oxidation numbers of the two types of sulphur atoms in Na2S4O6 is: |
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Answer» The difference in the oxidation numbers of the two types of sulphur atoms in Na2S4O6 is: |
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| 32. |
Packing efficiency of body centred cubic unit cell is: |
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Answer» Packing efficiency of body centred cubic unit cell is: |
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| 33. |
A hydrocarbon X adds on one mole of hydrogen to give another hydrocarbon and decolourised bromine water. X reacts with KMnO4 in presence of acid to give two moles of the same carboxylic acid. The structure of X is |
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Answer» A hydrocarbon X adds on one mole of hydrogen to give another hydrocarbon and decolourised bromine water. X reacts with KMnO4 in presence of acid to give two moles of the same carboxylic acid. The structure of X is |
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| 34. |
A solution of sulphur dioxide in water reacts with H2S precipitating sulphur. Here sulphur dioxide acts as |
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Answer» A solution of sulphur dioxide in water reacts with H2S precipitating sulphur. Here sulphur dioxide acts as |
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| 35. |
Here the product may be |
Answer»  Here the product may be |
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| 36. |
An example of a basic buffer is: |
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Answer» An example of a basic buffer is: |
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| 37. |
BCl3,BBr3 and BI3 undergo rapid and complete hydrolysis but the fluoride are not completely hydrolysed due to formation of – |
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Answer» BCl3,BBr3 and BI3 undergo rapid and complete hydrolysis but the fluoride are not completely hydrolysed due to formation of – |
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| 38. |
Which formula correctly represents the relative lowering of vapour pressure? |
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Answer» Which formula correctly represents the relative lowering of vapour pressure? |
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| 39. |
Benzaldehyde reacts with aniline to give |
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Answer» Benzaldehyde reacts with aniline to give |
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| 40. |
The decreasing order of reactivities of the following compounds towards electrophilic substitution is: |
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Answer» The decreasing order of reactivities of the following compounds towards electrophilic substitution is: |
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| 41. |
Which of the following is a metamer of CH3CH2−S−CH2CH3? |
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Answer» Which of the following is a metamer of CH3CH2−S−CH2CH3? |
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| 42. |
Which option does not have the correct order of dipole moments? |
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Answer» Which option does not have the correct order of dipole moments? |
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| 43. |
The temperature above which gas cannot be liquefied by application of pressure alone is |
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Answer» The temperature above which gas cannot be liquefied by application of pressure alone is |
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| 44. |
Temporary hardness may be removed from water by adding |
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Answer» Temporary hardness may be removed from water by adding
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| 45. |
The velocity of neutrons in a nuclear reactor is slowed down by using: |
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Answer» The velocity of neutrons in a nuclear reactor is slowed down by using: |
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| 46. |
The electronic configuration of an element is 1s2, 2s2, 2p6, 3s23p3.What is the atomic number of the element which is just below the above element in the periodic table |
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Answer» The electronic configuration of an element is 1s2, 2s2, 2p6, 3s23p3.What is the atomic number of the element which is just below the above element in the periodic table |
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| 47. |
Calculate the standard free energy change for the formation of methane at 298 K. C(graphite)+2H2(g)→CH4(g) Given that, Δ of CH4=−74.81KJmol−1 and ΔS∘ of Cgraphite,H2(g) and CH4(g) are 5.70K−1mol−1, and 186.3JK−1mol−1 respectively. |
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Answer» Calculate the standard free energy change for the formation of methane at 298 K. C(graphite)+2H2(g)→CH4(g) |
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| 48. |
The minimum wavelength of photon is 5000 ∘A , its energy will be |
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Answer» The minimum wavelength of photon is 5000 ∘A , its energy will be |
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| 49. |
For the reaction, A(g) + 2B → C(g) + D(g) dxdt=k[A][B]2 Initial pressure of A and B are respectively 0.60 atm and 0.80 atm. At a time when pressure of C is 0.20 atm, rate of reaction, relative to the initial value is |
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Answer» For the reaction, A(g) + 2B → C(g) + D(g) dxdt=k[A][B]2 Initial pressure of A and B are respectively 0.60 atm and 0.80 atm. At a time when pressure of C is 0.20 atm, rate of reaction, relative to the initial value is |
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| 50. |
In a galvanic cell, 96500 C of + ve charge hours through an external circuit from electrode of higher potential. If the emf of the galvanic cell is 1.0V (i.e, 1.0 J/C), the electrical work done by the cell is |
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Answer» In a galvanic cell, 96500 C of + ve charge hours through an external circuit from electrode of higher potential. If the emf of the galvanic cell is 1.0V (i.e, 1.0 J/C), the electrical work done by the cell is |
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