Atoms, Molecules, Chemical Arithmatic and Volumetric Analysis Test Online MCQs

1. Azimuthal quantum number defines

2. The weight of NaC1 decomposed by 4.9g of H₂SO₄, if 6 g of sodium hydrogen sulphate and 1.825 g of HC1, were produced in the reaction is:

3. 10²¹ molecules are removed from 200 mg of CO₂. The moles of CO₂ left are:

4. The weight of one molecule of a compound of molecular formula C₆₀H₁₂₂ is:

5. The oxide of an element contains 67.67% oxygen and the vapour density of its volatile chloride is 79. Equivalent weight of the element is: 

6. 0.4 moles of HCI and 0.2 moles of CAC1₂ were dissolved in water to have 500 mL of solution, the polarity of C1⁻ ion is:

7. Which of the following does not have valence electron in 3d-subshell?

8. At a constant volume the specific heat of a gas is 0.075 and its molecular weight is 40. The gas is:

9. The quantum number ‘m’ of a free gaseous atom is associated with:

10. If e = 1.60206 x 10⁻¹⁹ C,   e/m = 1.75875 x 10¹¹ C kg⁻¹ then the mass of electron is

11. The normality of solution obtained by mixing 10 ml of N/5 HCI and 30 ml of N/10 HCI is:

12. The wavelength of visible light is:

13. Spectrum of Li²⁺ is similar to that of

14. Volume of a gas at NTP is 1.12 x 10⁻⁷ cc. The number of molecule in it is:

15. The weight of a single atom of oxygen is: