The element used in lead pencils is__________?

Related Mcqs:

1. Which of the following is used in Pencils?

   A. Graphite
   B. Silicon
   C. Charcoal
   D. Phosphorous

   Submitted by: Muhammad Ashhar khan

2. An element that does not occur in nature but can be produced artificially is__________?

   A. Plutonium
   B. Uranium
   C. Radium
   D. Thorium

   Submitted by: WIQAR AHMAD

3. The heaviest man made element found so for is__________?

   A. Promethium
   B. Ununoctium
   C. Francium
   D. Technetium

   Submitted by: Malik Asghar Hussain

4. Lead ball falls through water more slowly than through air because __________?

   A. The value of ‘g’ is less in water
   B. Density of air is less than that of water
   C. Of the viscous force in water
   D. Of The surface tension of water

5. The most abundant element in the universe is __________.

   A. Oxygen
   B. Hydrogen
   C. Carbon Dioxide
   D. Silicon

6. The half life of a radioactive element is 8-days. How long it take to reduce it from 10 mg to 5 mg?

   A. 4 days
   B. 12 days
   C. 16 days
   D. 8 days
   E. None of these

7. The main culprit of greenhouse effect is Carbon dioxide. But which is the second element contributing most to greenhouse effect

   A. Nitrogen Dioxide (NO2)
   B. Chlorofluorocarbons (CFCs)
   C. Methane (CH4)
   D. High-fructose corn syrup (HFCs)

   Submitted by: Palestine

8. Diamonds are made up almost entirely of what element?

   A. Carbon
   B. Helium
   C. Methane
   D. Nitrogen

   Submitted by: Ashfaque Ali Khoso

9. In whole Periodic Table which element Is Most Reducing Agent ?

   A. Chlorine
   B. lithium
   C. Helium
   D. Neon

   Submitted by: Ali Jan

10. Which element has the most % in human body?

    A. Oxygen 65%
    B. Calcium 75%
    C. Hydrogen 10%
    D. Carbon 18%

    Submitted by: Syed Nizakat Ali Shah