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. |
The pH of 0.1M solution of cyanic acid (HCNO) is 2.34. Calculate the ionization constant of the acid and its degree of ionization in the solution. |
|
Answer» The pH of 0.1M solution of cyanic acid (HCNO) is 2.34. Calculate the ionization constant of the acid and its degree of ionization in the solution. |
|
| 2. |
For the reaction, |
|
Answer» For the reaction,
|
|
| 3. |
Explain the following terms: (i) Electrophoresis (ii) Coagulation (iii) Dialysis (iv) Tyndall effect. |
|
Answer» Explain the following
(i)
(iii) Dialysis (iv) Tyndall
|
|
| 4. |
If charge -200C is moved from point A to B then which point is at higher potential and how? |
| Answer» If charge -200C is moved from point A to B then which point is at higher potential and how? | |
| 5. |
If each orbital can hold maximum of three electrons then number of elements in 3 period of periodic table is? |
| Answer» If each orbital can hold maximum of three electrons then number of elements in 3 period of periodic table is? | |
| 6. |
The oxide which is neither acidic nor basic is: |
|
Answer» The oxide which is neither acidic nor basic is: |
|
| 7. |
total no. of stereoisomer for 2,3-dichlorobutane are |
| Answer» total no. of stereoisomer for 2,3-dichlorobutane are | |
| 8. |
Under what conditions does boron react with NaOH to form Na3BO3 + H2 gas ? |
| Answer» Under what conditions does boron react with NaOH to form Na3BO3 + H2 gas ? | |
| 9. |
The decomposition ofhydrogen peroxide can be slowed by the addition of a small amount of acetamide.The latter acts as a |
|
Answer» The decomposition of |
|
| 10. |
HX is a weak acid (Ka=10−5). It forms a salt NaX having concentration of 0.1M, on reacting with caustic soda. What is the degree of hydrolysis (h) of the salt? |
|
Answer» HX is a weak acid (Ka=10−5). It forms a salt NaX having concentration of 0.1M, on reacting with caustic soda. What is the degree of hydrolysis (h) of the salt? |
|
| 11. |
WHAT WOULD HAPPEN IF WE MIX IRON AND SULPHUR FILLINGS? |
| Answer» WHAT WOULD HAPPEN IF WE MIX IRON AND SULPHUR FILLINGS? | |
| 12. |
what is meant by ignoring quantization of charge? |
| Answer» what is meant by ignoring quantization of charge? | |
| 13. |
Tl+H2O+O2→A. A is . |
|
Answer» Tl+H2O+O2→A. A is |
|
| 14. |
Which of the following is responsible for turning moist starch iodide paper blue when it is brought in contact with ozone 1. Liberatio of iodine 2 .liberatuon of oxygen 3 formation of alkali 4. All of these |
|
Answer» Which of the following is responsible for turning moist starch iodide paper blue when it is brought in contact with ozone 1. Liberatio of iodine 2 .liberatuon of oxygen 3 formation of alkali 4. All of these |
|
| 15. |
The solubility product of a sparingly soluble salt BaSO4 is 1.1×10−10 at 25 oC . What will be the solubility of BaSO4 in presence of 0.02 M H2SO4?(assume complete dissociation of H2SO4) |
|
Answer» The solubility product of a sparingly soluble salt BaSO4 is 1.1×10−10 at 25 oC . What will be the solubility of BaSO4 in presence of 0.02 M H2SO4? |
|
| 16. |
When sulphur in the form of S8 is heated at 900 K, the initial pressure of one atm of S(8) falls by 29% at equilibrium. This is because of conversion of some S8 to S2. Find the value of equilibrium constant for this reaction. |
|
Answer» When sulphur in the form of S8 is heated at 900 K, the initial pressure of one atm of S(8) falls by 29% at equilibrium. This is because of conversion of some S8 to S2. Find the value of equilibrium constant for this reaction. |
|
| 17. |
32.Fecl2 ,zncl2 ,MgCl2, NaCl which of the given molecule is having least ionic character? |
| Answer» 32.Fecl2 ,zncl2 ,MgCl2, NaCl which of the given molecule is having least ionic character? | |
| 18. |
In propyne maximum number of collinear atoms are |
| Answer» In propyne maximum number of collinear atoms are | |
| 19. |
Show how are thefollowing alcohols prepared by the reaction of a suitableGrignard reagent onmethanal?(i) (ii) |
|
Answer» Show how are the Grignard reagent on (i) (ii) |
|
| 20. |
Match the following Column I Column II (A) Standard free energy change (p) nRlnV2V1 (B) Enthalpy change (q) −RTlnK (C) Entropy change (r) ΔE+PΔV (D) Free energy change (s) −nFE (t) ΔU+ΔngRT |
||||||||||||||||||||||||
Answer» Match the following
|
|||||||||||||||||||||||||
| 21. |
EAN of Mn2(CO)10 is |
| Answer» EAN of Mn2(CO)10 is | |
| 22. |
The pressure p of a gas is plotted against its absolute temperature T for two different constant volumes, V1 and V2. When V1>V2 , the |
|
Answer» The pressure p of a gas is plotted against its absolute temperature T for two different constant volumes, V1 and V2. When V1>V2 , the |
|
| 23. |
CH3MgBr +CH_2=CH-CHO \xrightarrow{H_3O^+} PRODUCT, IT IS 1 CH2=CH-CH(OH) CH3 2 CH2(OH) CH=CH-CH3 3 CH3CH2CH2CHO 4 NONE OF THESE |
| Answer» CH3MgBr +CH_2=CH-CHO \xrightarrow{H_3O^+} PRODUCT, IT IS 1 CH2=CH-CH(OH) CH3 2 CH2(OH) CH=CH-CH3 3 CH3CH2CH2CHO 4 NONE OF THESE | |
| 24. |
ntWhich of the following compound gives p-cresol with p-methyl diazonium chloride?n nt1) H2O 2) H3PO2 3) HCOOH 4) C6H5OHn |
| Answer» ntWhich of the following compound gives p-cresol with p-methyl diazonium chloride?n nt1) H2O 2) H3PO2 3) HCOOH 4) C6H5OHn | |
| 25. |
Which of the following reaction(s) can occur? |
|
Answer» Which of the following reaction(s) can occur? |
|
| 26. |
2. which of the ionic compound has the largest amount of LATTICE ENERGY. GIVE REASON. AlF3 or AlN |
| Answer» 2. which of the ionic compound has the largest amount of LATTICE ENERGY. GIVE REASON. AlF3 or AlN | |
| 27. |
C5H11Br is least soluble in: |
|
Answer» C5H11Br is least soluble in: |
|
| 28. |
14.1 m aq. Solution of a salt shows elevation in boiling point equal to 3 times of its kb. Determine (i) freezing point of solution (ii) osmotic pressure at 27^° c HINT: (i) 0- Tf'= 3×1.86×1 (ii) pi=3×1×0.0821×300atm. |
| Answer» 14.1 m aq. Solution of a salt shows elevation in boiling point equal to 3 times of its kb. Determine (i) freezing point of solution (ii) osmotic pressure at 27^° c HINT: (i) 0- Tf'= 3×1.86×1 (ii) pi=3×1×0.0821×300atm. | |
| 29. |
Sulphur reacts with conc.H2SO4 to give a gas A and, it reacts with conc. HNO3 to give a gas B. A and B respectivley are: |
|
Answer» Sulphur reacts with conc.H2SO4 to give a gas A and, it reacts with conc. HNO3 to give a gas B. A and B respectivley are: |
|
| 30. |
Which of the following compound is aromatic in nature? |
|
Answer» Which of the following compound is aromatic in nature? |
|
| 31. |
35. 5g of MnO2 on Rx with HCl forms 1.12L of Cl2 gas at S.T.P , The percentage impurity of MnO2 is ? |
| Answer» 35. 5g of MnO2 on Rx with HCl forms 1.12L of Cl2 gas at S.T.P , The percentage impurity of MnO2 is ? | |
| 32. |
phenol+Me_2SO_4+aq NaOH→? |
| Answer» phenol+Me_2SO_4+aq NaOH→? | |
| 33. |
8. The arrangment of (cH3)3C- , (CH3)2CH- ,CH3CH2- When attached to benzene or an unsaturated group in increasing order of effect is (a)(CH3)3C- < (CH3)2CH- |
| Answer» 8. The arrangment of (cH3)3C- , (CH3)2CH- ,CH3CH2- When attached to benzene or an unsaturated group in increasing order of effect is (a)(CH3)3C- < (CH3)2CH- | |
| 34. |
Question 35 Why does type of overlap given in the following figure not result in bond formation? |
|
Answer» Question 35 Why does type of overlap given in the following figure not result in bond formation?
|
|
| 35. |
Why are non aromatic compounds more stable than anti aromatic compounds? |
| Answer» Why are non aromatic compounds more stable than anti aromatic compounds? | |
| 36. |
The coagulation of 10 cm3 of gold sol by 1 mL 10% NaCl solution is completely prevented by addition of 0.025 g of starch to it. The gold number of starch is: |
|
Answer» The coagulation of 10 cm3 of gold sol by 1 mL 10% NaCl solution is completely prevented by addition of 0.025 g of starch to it. The gold number of starch is: |
|
| 37. |
When alpha particles are sent through a thin metal foil, most of them go straight through the foil because : |
|
Answer» When alpha particles are sent through a thin metal foil, most of them go straight through the foil because : |
|
| 38. |
Which of the following plots doesnot represent the behaviour of an ideal binary liquid solution ? |
|
Answer» Which of the following plots doesnot represent the behaviour of an ideal binary liquid solution ? |
|
| 39. |
Let a set A = {a, b, c, d}. The number of functions A->A can be formed such that f(f(x)) = x is |
| Answer» Let a set A = {a, b, c, d}. The number of functions A->A can be formed such that f(f(x)) = x is | |
| 40. |
If water contains dissolved calcium hydrogen carbonate, out of soaps and synthetic detergents which one will you use for cleaning clothes ? |
|
Answer» If water contains dissolved calcium hydrogen carbonate, out of soaps and synthetic detergents which one will you use for cleaning clothes ? |
|
| 41. |
The reagent that reacts with both acetaldehyde and acetone is : |
|
Answer» The reagent that reacts with both acetaldehyde and acetone is : |
|
| 42. |
Which of the following deviates from the rest in geometry? |
|
Answer» Which of the following deviates from the rest in geometry? |
|
| 43. |
6.choose an oxidizing substance among the following- •SO2 •H2S •SO3 •HNO2 |
| Answer» 6.choose an oxidizing substance among the following- •SO2 •H2S •SO3 •HNO2 | |
| 44. |
Three mol of Na2CO3 is allowed to react with a solution containing 6 mol of HCl. Find the volume of CO2 gas (in L) produced at STP. Na2CO3+2HCl⟶2NaCl+CO2+H2O |
|
Answer» Three mol of Na2CO3 is allowed to react with a solution containing 6 mol of HCl. Find the volume of CO2 gas (in L) produced at STP. Na2CO3+2HCl⟶2NaCl+CO2+H2O |
|
| 45. |
18 g of glucose, C6H12O6 is dissolved in 1 kg of water in a saucepan. At what temperature will the water boilunder atmospheric pressure? Kb for water is 0.52 K kg mol−1 |
|
Answer» 18 g of glucose, C6H12O6 is dissolved in 1 kg of water in a saucepan. At what temperature will the water boil under atmospheric pressure? Kb for water is 0.52 K kg mol−1 |
|
| 46. |
te bond order and charge per oxygen atom in HSO4- are respectively |
| Answer» te bond order and charge per oxygen atom in HSO4- are respectively | |
| 47. |
XeO3 is isostructural withSF4NH3 XeO₂F2H₂0 |
|
Answer» XeO3 is isostructural with SF4 NH3 XeO₂F2 H₂0 |
|
| 48. |
which of the following solution will exhibit the maximum elevation in boiling point. 1)0.1mNacl 2)0.1mCacl2 3)0.1mBacl2 4)0.1mFecl3 |
| Answer» which of the following solution will exhibit the maximum elevation in boiling point. 1)0.1mNacl 2)0.1mCacl2 3)0.1mBacl2 4)0.1mFecl3 | |
| 49. |
State any two characteristics associated with following reactionsCarbon monoxide + hydrogen =methanolbarium chloride + sodium sulphate=barium sulphate + sodium chloride |
|
Answer» State any two characteristics associated with following reactions Carbon monoxide + hydrogen =methanol barium chloride + sodium sulphate=barium sulphate + sodium chloride |
|
| 50. |
For a reaction 12A→2B rate of disappearance of A is related to rate of appearance of B by the expression |
|
Answer» For a reaction 12A→2B rate of disappearance of A is related to rate of appearance of B by the expression |
|
