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[Chemistry 5] Hydrogen And Its Compound (Hydride,Halogen) Solutions
1. An isotopy of hydrogen commonly referred to as heavy water is
A. protium
B. deuterium ✔
C. tritium
D. basic water
2. Hydrogen is manufactured via the following methods except
A. action of steam on iron ✔
B. action of steam on red-hot coke
C. action of steam on methane under nickel catalyst
D. elctrolytic method
3. All, except one metal, can displace hydrogen from water or acids
A. Zinc
B. Silver ✔
C. Potassium
D. Heated magnesium
4. Oxidation state of hydrogen in the hydride of nitrogen is
A. +1
B. +3
C. -3 ✔
D. -1
5. From the reaction Fe2O3(s) + 3H2(g) ✔- 2Fe(s) + 3H2O(g) Hydrogen is behaving as an
A. Oxidizing agent
B. Reducing agent ✔
C. Steam donor
D. Hydride
6. Which of the following metals will not give hydrogen with dilute hydrochloric acid ?
A. Cu ✔
B. Zn
C. Fe
D. Ca
7. Sodium hydride react with water to
A. Form acidic solution
B. Liberate hydrogen gas ✔
C. Form a salt
D. Liberate oxygen
8. With a lighted wooden splinter, hydrogen gives what sound
A. pop ✔
B. jazz
C. vivid
D. bass
9. Who discovered hydrogen ?
A. Carvendish ✔
B. Thomas
C. Lavoisier
D. killings
10. Hydrogen has a low melting point of
A. +273 degree celcius
B. -253 degree celcius ✔
C. -273 degree celcius
D. +253 degree celcius
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