| 1 |
Colour of which halogen is not correctly related. |
- A. F2 --- colourless gas
- B. Cl2---- greenish yellow gas
- C. Br2----- Reddish brown liquid
- D. I2-------- grayish Black solid
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| 2 |
Which statement is correct about the given reaction.<div>2NaOH + Cl2 --------------- NaCl + NaCIO + H2O</div> |
- A. Cl is oxidized and O is reduced
- B. Cl is reduced and O is oxidized
- C. Cl is oxidized as well as reduced
- D. Neither Cl nor oxygen is reduced or oxidized
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| 3 |
Which halogen occurs naturally in a positive oxidation state. |
- A. Fluorine
- B. Chlorine
- C. Bromine
- D. Iodine
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| 4 |
Which one is chlorous acid |
- A. HCIO
- B. HCIO<sub>2</sub>
- C. HCIO<sub>3</sub>
- D. HCIO<sub>4</sub>
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| 5 |
Iodine deficiency in diet is known to cause. |
- A. Beri Beri
- B. Goiter
- C. Rickets
- D. Night blindness
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| 6 |
Which one of the following uses is not correctly related with the halogen. |
- A. fluorine -------- Teflon
- B. Chlorine ---------Bleaching powder
- C. Bromine ---------------PVC plastics
- D. Iodine -----------Iodex
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| 7 |
The halogens ae best described by which of the following statements. |
- A. Their outer shell is complete
- B. Most of them are colourless
- C. They all are oxidizing agent
- D. They all are gases at room temperature
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| 8 |
Chlorine heptoxide reacts with water to form |
- A. Hypochlorous acid
- B. Chloric acid
- C. Perchloric acid
- D. Chlorine and oxygen
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| 9 |
The chemical formula of Sodium Bromite is. |
- A. NaBrO
- B. NaBrO2
- C. NaBrO3
- D. NaBrO4
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| 10 |
Which one of the following gases exist in monoatomic form. |
- A. Ozone
- B. Nitrogen
- C. Krypton
- D. Phosphine
|