The Halogens and the Nobel Gases MCQs 2

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MCQ's with answers from chapter 5 The Halogens and the Nobel Gases  book 2 for FSC pre engineering and pre medical for Board of Intermediate and Secondary education. Also For Entry Test Preparation for UET, NUST, PIEAS, GIKI, AIR, FAST, WAH University, UHS, other engineering Universities and Medical Colleges.

1. Which of the following element show positive oxidation state in its naturally occurring compound?
   1. F
   2. Cl
   3. Br
   4. l
2. Which halogen acid is the strongest acid?
   1. Hi
   2. HBr
   3. HCl
   4. HF
3. Which oxides of halogen react with carbon monoxide to produce CO2 (gas)
   1. OF2
   2. Cl2O7
   3. Br2
   4. I2O5
4. CL2 reacts with NaOH in cold state to give
   1. NaClO3
   2. NaClO4
   3. NaClO
   4. NaClO2
5. The increase in oxidation state of halogen from +1 to +7 is accompanied by
   1. Increase in thermal stability
   2. Increase in acidic strength
   3. Decrease in oxidizing power
   4. all
6. Which compound of xenon is found in the form of liquid state?
   1. XeF2
   2. XeF4
   3. XeF6
   4. XeOF4
7. Which is the strongest flouring agent
   1. XeF2
   2. XeF4
   3. XeF6
   4. XeOF4
8. The major application of iodine are in pharmaceutical industry is/are as
   1. Disinfectant
   2. Germicide
   3. Tincture of iodine
   4. all
9. HClO4 is very weak oxidizing agent in
   1. Cold and dilute
   2. Not and concentrated
   3. Cold and concentrated
   4. Hot and dilute
10. When CaOCl2 is very weak oxidizing agent in
    1. HClO
    2. CaCl2
    3. Both
    4. Cl2
11. Concentrated sulphuric acid is added to separate solid samples of sodium chloride, sodium bromide or sodium iodide whith which sample does sulphuric acid act as an oxidizing agent
    1. Sodium chloride
    2. Sodium chloride and sodium bromide
    3. Sodium bromide and sodium iodide
    4. Sodium iodide only
12. A substance which sublimes readily is
    1. F2
    2. Cl2
    3. Br2
    4. I2
13.  Bleaching powder is an example of
14. 1. Mixed salt
    2. Normal salt
    3. Complex salt
    4. Double salt
15. Halogens absorb light in the visible region. Fluorine emits pale yellow light when it absorbs
    1. Green light
    2. Blue light
    3. Red light
    4. Violet light
16. Which of following noble gas has minimum molar heat of vaporization
    1. He
    2. Ar
    3. Ne
    4. kr
17. Which of the following halogen acid has maximum volatility
    1. HF
    2. HCl
    3. HBr
    4. HI
18. The causes of peculiar behavior of fluorine is/are
    1. Small atomic size
    2. High E.N
    3. No 3-d sub shell
    4. all
19. I2 (iodine) can oxidize which of the following halide.
    1. F-1
    2. Cl-1
    3. Br-1
    4. None

1. I
2. HI
3. L3O5
4. NaClO
5. All
6. XeOF4
7. XeF6
8. All
9. Cold and dilute
10. Both
11. Sodium
12. I2
13. Mixed salt

    15. Blue light
    16. He
    17. HCl
    18. All
    19. none