Which of the following is the hardest substance?

Related Mcqs:

1. Which is the hardest substance in the human body?

   A. Tooth enamel
   B. Skull
   C. Knee cap
   D. Rib

   Submitted by: ABDUL HAYEE

2. Which of the following is a substance?

   A. Sea water
   B. Brass
   C. Tape water
   D. Graphite
   E. Sand

   Submitted by: Mansoor Ul Haque

3. Which of the following is the lightest substance?

   A. Uranium
   B. Hydrogen
   C. Oxygen
   D. Nitrogen

   Submitted by: Irfan

4. The most densest substance on the Earth is __________.

   A. Platinum
   B. Copper
   C. Steel
   D. Osmium

5. A substance which increases the efficiency of a catalyst is termed as:

   A. Promoter
   B. Activator
   C. Retarder
   D. Super catalyst

   Submitted by: Mansoor Ul Haque

6. The property of a substance to absorb moisture from the air on exposure is called____________?

   A. osmosis
   B. deliquescence
   C. efflorescence
   D. desiccation

   Submitted by: WIQAR AHMAD

7. Substance used in match sticks ?

   A. Sulphur
   B. Zinc
   C. Acid
   D. Phosphorus

   Submitted by: Mansoor Ahmed Suhag

8. Substance whose atoms can be split are known as __________ materials.

   A. Fusionable
   B. Fissionable
   C. Combustible
   D. None of these

   Submitted by: Rashid Mehmood

9. When sound waves travel from air to water which of the following quantities remains unchanged?

   A. Speed
   B. Frequency
   C. Intensity
   D. Wavelength

   Submitted by: Rashid Mehmood

10. Which of the following is the study of micro- organisms, mostly viruses and single called organisms such as bacteria, yeasts and protozoa ?

    A. Microbiology
    B. Micrology
    C. Histopathology
    D. Tavelogy

    Submitted by: Rashid Mehmood