Across short period the melting and boiling point increase upto __________________?

Related Mcqs:

1. The melting points and boiling points upto meddle of 3d- series ____________________?

   A. increases B. decreases C. remain same D. no regular trend...

2. Boiling points of hydrocarbons increase with the increase in number of carbon atoms. It is mainly due to_________________?

   A. More strength of H-bonding B. More strength of London forces C. Less polarizability D. All of the above...

3. The molal boiling point constant is the ration of the elevation of boiling point to____________________?

   A. Molarity B. Molality C. More fraction of solvent D. Mole fraction of solute...

4. Shielding effect across the period ________________?

   A. Increases B. Decreases C. Constant D. None...

5. The shielding Effect across the period __________?

   A. Increases B. Decreases C. Remains Same D. None of them Submitted by: Aamir khan Hullio...

6. The property which increases upto group IV-A then decreases on wards_______________?

   A. Ionization energy B. Atomic radii C. Melting & boiling points D. Atomic volume...

7. Upto ___________________ C atoms alkanes are gases?

   A. 2 B. 3 C. 4 D. 6...

8. Melting points of VII-A group elements down the group ____________________?

   A. Increase B. Decrease C. Remain constant D. No regular trend...

9. Which one of the followings possesses melting point below 0°C?

   A. Nitrogen B. Phosphorus C. Carbon D. Bismuth...

10. In melting of iron, which of the following reactions takes place in Bladt Furnace at 400°C- 600°C________?

    A. CaO+ SiO2——> CaSiO3 B. 2FeS+3O2——–> 2Fe+ SO2 C. FeSiO3———> FeSiO3 D. Fe2O3+ 3CO——–> 2Fe+ 3CO2 Submitted by: Muhammad Ali Kunbhar...