| 1 |
The molar mass of H<sub>2</sub>SO<sub>4</sub> is:<br> |
- A. 98 g
- B. 98 amu<br>
- C. 9.8 g <br>
- D. 9.8 amu<br>
|
| 2 |
positive ion hare formed by _________ of electrons. |
- A. Gain
- B. Loss
- C. Sharing
- D. Bonding
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| 3 |
The period of Alchemists extends from _________ AD. |
- A. 800 to 1800
- B. 600 to 1600
- C. 900 to 1900
- D. 700 to 1700
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| 4 |
................. can be decomposed into simpler substanmce. |
- A. Compound
- B. Element
- C. Solution
- D. Mixture
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| 5 |
Atoms as a whole is _________ |
- A. +
- B. _
- C. No
- D. Neutral
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| 6 |
Amadeo Avogadro was a _______________ scientist. |
- A. Italian
- B. English
- C. Greek
- D. Russian
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| 7 |
All of the following are tri-atomic molecules except:<br> |
- A. H<sup>2</sup>
- B. O<sup>3</sup>
- C. H<sup>2</sup>O
- D. CO<sup>2</sup>
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| 8 |
A _________ is a pure substance is made up of two or more elements. |
- A. Mixture
- B. Elements
- C. Solution
- D. Compound
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| 9 |
The fundamental unit of elements is ___________ |
- A. Molecule
- B. Atom
- C. Matter
- D. Mixture
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| 10 |
O3, Ozone is _________ molecules. |
- A. Homoatomic
- B. Hetroatomic
- C. Monoatomic
- D. Nil
|