Entry Test MCQ :: Basic Concept
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| 11. |
The sample of isotopes of an element which needs not to be vaporized in the vaporization chamer |
| A. |
Gas |
B. |
Liquid |
| C. |
Volatile solid |
D. |
All |
Answer: Option A
Explanation:
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| 12. |
One mole of CO2 contains. |
| A. |
6.022 x 1023 atoms of oxygen |
B. |
22-gram electrons |
| C. |
6.022 x 1023 atms of carbon |
D. |
both b & c |
Answer: Option D
Explanation:
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| 13. |
Avogadros number may represent |
| A. |
volume of particles |
B. |
number of particles |
| C. |
mass of particles |
D. |
All of the above |
Answer: Option D
Explanation:
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| 14. |
The number of isotopes of elements with even mass number and even atomic number are. |
Answer: Option C
Explanation:
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| 15. |
Size of molecule depends upon |
| A. |
Atomicity |
B. |
Shape of molecule |
| C. |
Both a and b |
D. |
Difficult to predict |
Answer: Option C
Explanation:
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| 16. |
Which of the following terms is not used for ionic compound? |
| A. |
formula unit |
B. |
empirical formula |
| C. |
molecular formula |
D. |
formula mass |
Answer: Option C
Explanation:
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| 17. |
0.36 moles of each aluminium and oxygen react with each other to produce aluminium oxide. The amount of product formed is |
| A. |
0.18 mole |
B. |
0.27 mole |
| C. |
0.24 mole |
D. |
0.09 mole |
Answer: Option A
Explanation:
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| 18. |
Which of the following terms is used for the mass of chlorine 35.5? |
| A. |
relative atomic mass |
B. |
mass number |
| C. |
atomic weight |
D. |
relative isotopic mass |
Answer: Option A
Explanation:
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| 19. |
Which one of the following has the maximum number of isotopes? |
Answer: Option C
Explanation:
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| 20. |
Which one of the following is not the mono isotopic element? |
| A. |
arsenic |
B. |
uranium |
| C. |
iodine |
D. |
nickel |
Answer: Option B
Explanation:
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