10 - Science - 10. Chemistry – Atoms And Molecules
6 Questions
| Total Attempts: 1584
Questions and Answers
- 1.From the given examples, form the pair of isotopes. 18 Ar 40, 17 Cl 35, 20 Ca 40, 17 Cl 37
- A.
18 Ar 40, 20 Ca 40
- B.
17 Cl 35, 17 Cl 37
- 2.From the given examples, form the pair of isobars. 18 Ar 40, 17 Cl 35, 20 Ca 40, 17 Cl 37
- A.
17 Cl 35, 17 Cl 37
- B.
18 Ar 40, 20 Ca 40
- 3.Molecular mass of nitrogen is 28. Its atomic mass is 14. Find the atomicity of nitrogen.
- A.
28
- B.
14
- C.
2
- D.
3
- 4.Gram molecular mass of oxygen is 32g. Density of oxygen is 1.429g/cc. Find the gram molecular volume of oxygen.
- A.
1.429g/cc
- B.
32g
- C.
1 lit
- D.
22.4 lit
- 5.Calculate the gram molecular mass of water from the values of gram atomic mass of hydrogen and of oxygen.
- A.
1
- B.
16
- C.
18
- D.
19
- 6.One mole of any substance contains 6.023 x 1023 particles. If 3.0115 x 1023 particles are present in CO2. Find the number of moles.
- A.
1
- B.
2
- C.
.05
- D.
0.25
Atoms are the smallest particle into which an element can be divided. Atoms can join together to form molecules, which in turn form most of the objects around you. The quiz below should take you less than thirty minutes and...
Questions: 15 | Attempts: 1644 | Last updated: Oct 11, 2018
-
Sample QuestionWhich of the following correctly represents 360g of water?a) 2 moles of waterb) 20 moles of waterc) 6.022 x 1023 molecules of waterd) 1.2044 x 1025 molecules of water
Questions: 6 | Attempts: 1584 | Last updated: Apr 27, 2017
-
Sample QuestionFrom the given examples, form the pair of isotopes. 18 Ar 40, 17 Cl 35, 20 Ca 40, 17 Cl 37
Test over chapter 6
Questions: 18 | Attempts: 247 | Last updated: Dec 13, 2019
-
Sample QuestionA compound is held together by
Back to top