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Question 1 of 50
1. Question
Repeated use of which one of the following fertilizers would increase the acidity of the soil
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Question 2 of 50
2. Question
In which of the following compounds, nitrogen exhibits highest oxidation state
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Question 3 of 50
3. Question
Which of the following is low boiling liquid
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Question 4 of 50
4. Question
Chlorine acts as bleaching agent only in the presence of
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Question 5 of 50
5. Question
Which of the following statements is correct
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Question 6 of 50
6. Question
Concentrated sulphuric acid is always dilute by adding
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Question 7 of 50
7. Question
Which among the following is strongest acid
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Question 8 of 50
8. Question
Ammonia can be dried by
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Question 9 of 50
9. Question
Anomalous behaviour f nitrogen is due to
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Question 10 of 50
10. Question
The predominant intermolecular forces in HF is due to
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Question 11 of 50
11. Question
which of the following non-metal possesses the atomicity double than that of phosphorus
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Question 12 of 50
12. Question
XeF₆ on complete hydrolysis gives
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Question 13 of 50
13. Question
Which of the following is most volatile
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Question 14 of 50
14. Question
The oxyacid of sulphur that contains a lone pair of electrons on sulphur is
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Question 15 of 50
15. Question
Perchloric acid is prepared by the action of concentrated sulphuric acid on
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Question 16 of 50
16. Question
In the process of nitration, the electrophile formed is
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Question 17 of 50
17. Question
P₂O₅ is an anhydride of
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Question 18 of 50
18. Question
The percentage of nitrogen in urea is
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Question 19 of 50
19. Question
The most efficient agent for the absorption of SO₃ is
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Question 20 of 50
20. Question
Aqueous solutions of hydrogen sulphide and sulphur dioxide when mixed together, yield
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Question 21 of 50
21. Question
Urea is preferred to ammonium sulphate as a nitrogeneous fertilizer because
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Question 22 of 50
22. Question
Use of chlorofluoro carbons is not encouraged because
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Question 23 of 50
23. Question
In Ramsay and Rayleigh’s isolation on noble gases from air, the nitrogen of the air is finally converted into
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Question 24 of 50
24. Question
When chlorine water is exposed to sunlight, the colour change that occurs is
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Question 25 of 50
25. Question
Chlorine dioxide is best prepared by passing dry
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Question 26 of 50
26. Question
Which one of the following statements about halogens is correct
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Question 27 of 50
27. Question
Pick out the stronger reducing agent among the following oxyacids of phosphorus
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Question 28 of 50
28. Question
The element with positive electron gain enthalpy is
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Question 29 of 50
29. Question
Which of the following is a strong acid
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Question 30 of 50
30. Question
Which of the following element, has the same oxidation state in all of its compounds
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Question 31 of 50
31. Question
An important product in the ozone depletion by chlorofluorocarbons is
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Question 32 of 50
32. Question
Which of the following is more acidic in nature
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Question 33 of 50
33. Question
The electronic configuration of a noble gas is
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Question 34 of 50
34. Question
The inert gas abundantly found in atmosphere is
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Question 35 of 50
35. Question
The orthophosphoric acid is a
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Question 36 of 50
36. Question
Which is weakest acid
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Question 37 of 50
37. Question
Solubility of iodine in water may be increased by adding
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Question 38 of 50
38. Question
which of the following oxy acids of phosphorus is a reducing agent and monobasic
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Question 39 of 50
39. Question
Chlorine is in +1 oxidation state in which of the following
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Question 40 of 50
40. Question
Which of the following is used in the preparation of chlorine
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Question 41 of 50
41. Question
Which of the following about fluorine is not correct
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Question 42 of 50
42. Question
H₂S₂O₇ has a commercial name as
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Question 43 of 50
43. Question
Which is difference between melting and boiling point of zero group elements
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Question 44 of 50
44. Question
When conc. H₂SO₄ is added to dry KNO₃, brown fumes are evolved. These fumes are of
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Question 45 of 50
45. Question
Which of the following is a tribasic acid
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Question 46 of 50
46. Question
Atoms in a P₄ molecule of white phosphorus are arranged regularly in the following way
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Question 47 of 50
47. Question
The reaction that takes place when Cl₂ gas is passed through conc.NaOH solution is
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Question 48 of 50
48. Question
Which of the following is used to prepare Cl₂ gas at room temperature from concentrated HCl
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Question 49 of 50
49. Question
NO₂ is not obtained on heating
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Question 50 of 50
50. Question
The number of acidic protons in H₃PO₃ are
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