A substance having very high vapour pressure at its melting point on heating will show_______________?

Related Mcqs:

1. 18g glucose is dissolved in 90g water the relative lowering in vapour pressure is equal to ___________________?

   A. 8 B. 5.1 C. 6 D. one/fifty one...

2. Vapour pressure is not affected by_______________?

   A. Surface area B. temperature C. intermolecular forces D. atmospheric pressure...

3. The relative lowering of vapour pressure is_____________________?

   A. equal to the mole fraction of solvent B. equal to the mole fraction of solute C. directly proportional to the mole fraction of solute D. both B & C...

4. The relative lowering of vapour pressure is directly proportional to molality if the solution is________________?

   A. concentrated B. dilute C. saturated solution D. all of the above...

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

   A. IIIA group B. IVA group C. VA group D. VIA group...

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

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

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

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

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

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

9. 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...

10. In crystallization if the solvent is inflammable then direct heating is________________?

    A. needed B. avoided C. depends on temperature D. crystallization does not involve heating...