Entry Test MCQ :: The Halogens and The Noble Gases
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11. |
Which is the strongest acid? |
Answer: Option D
Explanation:
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12. |
Bromine can be liberated from KBr solution by the action of |
A. |
Iodine solution |
B. |
Chlorine |
C. |
NaCl |
D. |
Ki |
Answer: Option B
Explanation:
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13. |
Bleaching powder is an example of |
A. |
Normal salt |
B. |
Double salt |
C. |
Mixed salt |
D. |
Complex |
Answer: Option C
Explanation:
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14. |
Consider the following reaction- 2KCIO3 + H2C2O4 + H2SO4 ? K2SO4 + 2H2O + 2CO2 + Oxide Which oxide of chlorine is produced in the above reaction? |
Answer: Option B
Explanation:
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15. |
Which of the following oxides of iodine is used for quantitative analysis of CO? |
A. |
I2O4 |
B. |
I4O2 |
C. |
I2O5 |
D. |
All are equally useful |
Answer: Option C
Explanation:
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16. |
Consider the following reaction- 3Cl2 + 6NaOH ? NaClO3 + 5NaCl + 3H2O This reaction is |
A. |
Displacement reaction |
B. |
Double displacement reaction |
C. |
Disproportionation reaction |
D. |
Reduction reaction |
Answer: Option C
Explanation:
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17. |
Which of the halogen has highest electronegativity? |
A. |
Fluorine |
B. |
Chlorine |
C. |
Bromine |
D. |
Iodine |
Answer: Option A
Explanation:
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18. |
Which of the halogen can displace other three elements? |
A. |
Flourine |
B. |
Chlorine |
C. |
Iodine |
D. |
Bromine |
Answer: Option A
Explanation:
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19. |
Which of the following statements is incorrect about halogens? |
A. |
All are non-metals |
B. |
All the halogens have electronic conviguration ns2p5 |
C. |
They have high electron attinity and ionization energy |
D. |
All the halogens react with noble gases to form their halides |
Answer: Option D
Explanation:
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20. |
The chemical formula of sodium hypochlorite is |
Answer: Option A
Explanation:
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