MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Calculate the number of moles in 369 grams of CaOCl2? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» D. 4 | |
| 2. |
What are the number of molecules of water in CuSO4•5H2O, if the weight of oxygen in it is 36 grams? |
| A. | 3.25 X 1023 |
| B. | 5.25 X 1023 |
| C. | 7.52 X 1023 |
| D. | 9.52 X 1023 |
| Answer» D. 9.52 X 1023 | |
| 3. |
Which of the following has the same number of moles as in 398 grams of CuSO4? |
| A. | 2 grams of hydrogen |
| B. | 40 grams of oxygen |
| C. | 35 grams of nitrogen |
| D. | 58.5 grams of Sodium chloride |
| Answer» C. 35 grams of nitrogen | |
| 4. |
What are the number of moles of hydrogen in NH4[Cr(SCN)4(NH3)2] if the weight of nitrogen in it is 49 grams? |
| A. | 3.5 |
| B. | 5 |
| C. | 7 |
| D. | 10 |
| Answer» C. 7 | |
| 5. |
What are the number of atoms of chlorine in 250.5 grams of Cl2O6? |
| A. | 1.806 X 1024 |
| B. | 2.408 X 1024 |
| C. | 9.033 X 1023 |
| D. | 6.022 X 1023 |
| Answer» B. 2.408 X 1024 | |
| 6. |
What are the number of moles of nitrogen in 274 grams of (NH4)2Ce(NO3)6? |
| A. | 16 |
| B. | 8 |
| C. | 6 |
| D. | 4 |
| Answer» E. | |
| 7. |
A solution with density 1 g/cm3 has 98 grams of H2SO4 in 402 grams of water, what is the concentration of solution? |
| A. | 1 molar |
| B. | 2 molar |
| C. | 3 molar |
| D. | 4 molar |
| Answer» C. 3 molar | |
| 8. |
What is the molar concentration of a solution with 49 grams of H2SO4 in 0.5 liter solution? |
| A. | 1 mole/liter |
| B. | 2 mole/liter |
| C. | 3 mole/liter |
| D. | 4 mole/liter |
| Answer» B. 2 mole/liter | |
| 9. |
A solution with density 2 g/cm3, concentration 1 molar and weight 500 grams, then what is the mass of HNO3 in the solution? |
| A. | 63 grams |
| B. | 126 grams |
| C. | 189 grams |
| D. | 252 grams |
| Answer» E. | |
| 10. |
A 5 molar solution is 27.75% CaCl2 by mass, what is the density of the solution? |
| A. | 1 g/cm3 |
| B. | 2 g/cm3 |
| C. | 3 g/cm3 |
| D. | 4 g/cm3 |
| Answer» C. 3 g/cm3 | |
| 11. |
How much Sodium is there in a solution with 10 Kg of solvent (Density = 5 Kg/m3) and concentration 4 molar? |
| A. | 23 grams |
| B. | 92 grams |
| C. | 184 grams |
| D. | 276 grams |
| Answer» D. 276 grams | |
| 12. |
What is the molar concentration of a solution with 44 grams of CO2 in 0.5 liter solution? |
| A. | 1 mole/liter |
| B. | 2 mole/liter |
| C. | 3 mole/liter |
| D. | 4 mole/liter |
| Answer» C. 3 mole/liter | |
| 13. |
What is the molar concentration of a solution with 32 grams of CH4 in 1 liter solution? |
| A. | 1 mole/liter |
| B. | 2 mole/liter |
| C. | 3 mole/liter |
| D. | 4 mole/liter |
| Answer» C. 3 mole/liter | |
| 14. |
What is the molarity of the mixture of two solution, first solution 4 M and 10 liter and second solution 2 M and 40 liter? |
| A. | 1.2 M |
| B. | 2.4 M |
| C. | 4.8 M |
| D. | 9.2 M |
| Answer» C. 4.8 M | |
| 15. |
What is the molar concentration of a solution with 40 gram of NaOH in 1 liter solution? |
| A. | 1 mole/liter |
| B. | 2 mole/liter |
| C. | 3 mole/liter |
| D. | 4 mole/liter |
| Answer» B. 2 mole/liter | |