Mixtures which distill over without change in composition called___________________?

Related Mcqs:

1. Every sample of matter with uniform properties and fixed composition is called_________________?

   A. solute B. solvent C. solution D. phase...

2. If a physical and chemical change takes place at a constant pressure then the heat change during the process is called__________________?

   A. Heat of transition B. Heat of fusion C. Enthalpy change D. All of above...

3. The composition of mixture of clay and lime stone in the raw for cement material is __________________?

   A. 75% lime stone and 25% clay B. 25% lime stone and 75% clay C. 15% lime stone and 55% clay D. 55% lime stone and 15% clay...

4. The chemical composition of cinnabar is__________________?

   A. ZnS B. PbS C. HgS D. FeS...

5. The composition of brown ring in nitrate test is_________________?

   A. FeSO4.No B. FeSO4.No2 C. FeSO4.No3 D. FeSO4.N2o...

6. The composition of ‘ Golden spangles is_________?

   A. PbCrO4 B. PbI2 C. As2Cr2O7 D. BaCrO4 Submitted by: Muhammad Ali Kunbhar...

7. Negative log of mular concentration of H+ ions is called___________________?

   A. pH B. pOH C. pKa D. pKw...

8. R-Mg-Br is called___________________?

   A. Grignard reagent B. Metallic alkyl halide C. Both A & B D. Alkyl...

9. Introduction of nitro group in a molecule is called___________________?

   A. nitration B. halogenation C. sulphonation D. amination...

10. The number of molecules taking part in the rate determining step is called___________________?

    A. Order of reaction B. Rate of reaction C. Mole of a reaction D. Extent of a reaction...