which of the following is a non-crystalline solid pair?

Related Mcqs:

1. Borax is a white crystalline solid and it is_________________?

   A. More soluble in cold water
   B. More soluble in hot water
   C. Insoluble in water
   D. Soluble only in organic solvents

2. All of the following substances are crystalline except_____________?

   A. Ice
   B. Diamond
   C. Sucrose
   D. Plastic

   Submitted by: Mansoor Ul Haque

3. Which of the following will not form crystalline structure with opporitely charged ions_________________?

   A. H+
   B. H-
   C. Mg2+
   D. Ca2+

4. The phenomenon in which a compound exists in two or more crystalline forms is called ________________?

   A. Isomorphism
   B. Polymorphism
   C. Anisotropy
   D. Allotropy

5. Crystalline solids can be identified easily from their ___________________?

   A. Sharp melting point
   B. Definite geometry
   C. Transition temperature
   D. Colour

6. What is the color of copper sulfate crystalline?

   A. White
   B. Brown
   C. Blue
   D. Green

   Submitted by: Muhammad Kamal

7. As a substance moves from a solid to a liquid all of the following changes occur except ?

   A. molecules become more disordered.
   B. K.E of the molecules decreases
   C. intermolecular forces become weaker.
   D. molecules move more frequently.

8. Which of the following is solid?

   A. Water
   B. Stone
   C. Both
   D. None

   Submitted by: Rashid Bhutto

9. Some substances are good conductor of electricity in both the solid and liquid states. These substances are generally______________?

   A. ionic substances
   B. metallic substances
   C. molecular solids
   D. covalent network solids

   Submitted by: Mansoor Ul Haque

10. CO2 is gas while SiO2 is solid at room temperature?

    A. carbon is non-metal while silicon is semi-metal
    B. CO2 is an independent molecule while SiO2 has network covalent structure
    C. CO2 forms multiple bond while silicon does not form multiple bonds
    D. Silicon has all sigma bonds