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Question 1 of 57
1. Question
The process of zone refining is used in the purification of
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Question 2 of 57
2. Question
The number of water molecules present in a drop of eater weighing 0.018 gm is
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Question 3 of 57
3. Question
Empirical formula of a compound if CH2O and its molecular mass is 90, the molecular formula of the compound is
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Question 4 of 57
4. Question
Hybridised states of carbon in Graphite and Diamond are respectively
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Question 5 of 57
5. Question
The mass of 112 cm3 of NH3 gas at STP is
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Question 6 of 57
6. Question
IUPAC name of CH3 – CH(OH) – CH2 – CH(COOH) – CH3 is
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Question 7 of 57
7. Question
Alkali metals have negative reduction potential and hence they behave as
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Question 8 of 57
8. Question
Which of the following gases has the highest value of RMS-velocity at 298 K?
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Question 9 of 57
9. Question
Cycloalkane formed when 1, 4-dibromopentane is heated with Sodium is
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Question 10 of 57
10. Question
In the reaction, 2FeSO4 + H2SO4 + H2O2 → Fe2(SO4)3 + 2H2O, the oxidizing agent is
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Question 11 of 57
11. Question
Given Thermochemical equation, 2H2(g) + O2(g) → 2H2O(l) ; ∆H = -571.6 kJ. Heat of decomposition of water is
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Question 12 of 57
12. Question
In Buna-S, the Symbol ‘Bu’ stands for
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Question 13 of 57
13. Question
The electronic configuration of Cu2+ ion is
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Question 14 of 57
14. Question
The yield of the products in the reaction, A2(g) + 2B(g) ⇌ C(g) + Q. kJ would be higher at
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Question 15 of 57
15. Question
Mesomeric effect involves
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Question 16 of 57
16. Question
Which one of the following sets of ions represents the collection of isoelectronic species?
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Question 17 of 57
17. Question
Adsorption theory is applicable for
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Question 18 of 57
18. Question
Methane can be converted into Ethane by the reactions
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Question 19 of 57
19. Question
Intra-molecular Hydrogen bonding is formed in
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Question 20 of 57
20. Question
If 50% of the reactant is converted into a product in a first order reaction in 25 minutes, how much of it would react in 100 minutes?
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Question 21 of 57
21. Question
The number of optical isomers of the compound CH3 – CHBr – CHBr – COOH is
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Question 22 of 57
22. Question
When limestone is heated, CO2 is given off. The metallurgical operation is
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Question 23 of 57
23. Question
The rate of reaction increases with rise in temperature because of
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Question 24 of 57
24. Question
Meso compounds do not show optical activity because
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Question 25 of 57
25. Question
When formic acid is heated with concentrated H2SO4, the gas evolved is
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Question 26 of 57
26. Question
Temperature coefficient of a reaction is ‘2’. When temperature is increased from 30 oC to 90 oC, the rate of reaction is increased by
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Question 27 of 57
27. Question
Conversation of benzene to acetophenone can be brought by
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Question 28 of 57
28. Question
Excess of PCl5 reacts with concentrated H2SO4 giving
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Question 29 of 57
29. Question
An example for a neutral buffer is
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Question 30 of 57
30. Question
Which of the following is employed in flash tubes in photography?
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Question 31 of 57
31. Question
Conjugate base of H2PO4–
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Question 32 of 57
32. Question
An alkyl bromide (X) reacts with Sodium in ether to form 4, 5-diethyl octane, the compound ‘X’ is
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Question 33 of 57
33. Question
Which one of the following shows highest magnetic moment?
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Question 34 of 57
34. Question
The emf of a galvanic cell constituted with the electrodes Zn2+ ǀ Zn (-0.76 V) and Fe+2 ǀ Fe(-0.41 V) is
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Question 35 of 57
35. Question
Which of the following pairs are correctly matched ? (Reactants : Products)
- RX + AgOH(aq) : RH
- RX + AgCN(Alco) : RNC
- RX + KCN(alco) : RNC
- RX + Na(ether) : R – R
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Question 36 of 57
36. Question
In a transition series, with the increase in atomic-number, the paramagnetism
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Question 37 of 57
37. Question
Identify a species which is ‘NOT’ a Bronsted acid but a Lewis acid.
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Question 38 of 57
38. Question
The compound formed when calcium acetate and calcium formate is dry distilled
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Question 39 of 57
39. Question
d2sp3 hybridisation of the atomic orbitals gives
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Question 40 of 57
40. Question
The pH of 10-8M HCl solution is
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Question 41 of 57
41. Question
Which of the following is strongly acidic?
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Question 42 of 57
42. Question
A group of atoms can function as a ligand only when
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Question 43 of 57
43. Question
Acetone and propanal are
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Question 44 of 57
44. Question
Which of the following is diamagnetic?
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Question 45 of 57
45. Question
3 gms of urea is dissolved in 45 gms of H2 The relative lowering in vapour pressure is
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Question 46 of 57
46. Question
The reagent used to distinguish between acetaldehyde and benzaldehyde is
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Question 47 of 57
47. Question
Metallic lustre is due to
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Question 48 of 57
48. Question
Which of the following aqueous solutions will exhibit highest boiling point?
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Question 49 of 57
49. Question
Which one of the following gives amine on heating with amide?
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Question 50 of 57
50. Question
The process is spontaneous at the given temperature, if
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Question 51 of 57
51. Question
Glucose when reduced with HI and Red Phosphorus gives
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Question 52 of 57
52. Question
The stability of a Lyophobic colloid is due to
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Question 53 of 57
53. Question
Oils are liquids at room temperature since they contain higher percentage of
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Question 54 of 57
54. Question
Which of the following cations will have minimum flocculation value for arsenic sulphide sol ?
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Question 55 of 57
55. Question
The value of entropy of solar system is
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Question 56 of 57
56. Question
In face centred cubic lattice, a unit cell is shared equally by how many unit cells?
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Question 57 of 57
57. Question
The number of disulphide linkages present in Insulin are