Which of the following is different with respect to physical appearance ?

Related Mcqs:

1. Periodic table provides a basic framework to study elements with respect to their__________________?

   A. Physical properties
   B. Chemical properties
   C. Properties of their compounds
   D. All

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. When benzene is substituted by halogens only which one of the following halogens only which one of the following halogens is given the number one position in the ring while writing the name of compound ?

   A. Bromine
   B. Chlorine
   C. Fluorine
   D. Iodine

4. Which of the following will give phosphoric acid one reaction with water_________________?

   A. PCI5
   B. P2O3
   C. P2O5
   D. All of the above

5. The most electronegative element among the following is_________________?

   A. Sb
   B. N
   C. As
   D. P

6. Which one of following is not a property of pure quartz ?

   A. Coloured solid
   B. Brittle
   C. Hard
   D. All of above

7. Which of the following does not contain phosphorus ?

   A. Yolk of egg
   B. Bone
   C. Nerves
   D. Steel

8. Which one of the following is not the use of graphite ?

   A. Lead pencils
   B. Abrasive
   C. Lubricant
   D. Electrode of electrolytic cell

9. Which one of the following compounds usually smells like garlic ?

   A. P2O3
   B. P2O5
   C. H3PO3
   D. All have same smell

10. All the following variables are used to describle gases except__________________?

    A. pressure
    B. volume
    C. moles
    D. density