Octane rating of Gasoline can be increased by __________?

Related Mcqs:

1. The octane number of zero is assigned to____________?

   A. 2-methyl octane
   B. n-heptane
   C. iso-octane
   D. 3-methyl octane

   Submitted by: Muhammad Ali Kunbhar

2. The compound which is added to leaded gasoline to save engine from lead oxide and lead sulphate deposits is__________________?

   A. Ethylene iodide
   B. Ethylene bromide
   C. Ethylene chloride
   D. Ethylene fluoride

3. Black foot disease is caused by the pollution of groundwater as a consequence of increased seepage of:__________?

   A. Nitrates
   B. Fluorides
   C. Arsenic
   D. Mercury

   Submitted by: Abid Hussain

4. Rate of filtration can be increased by applying gentle suction______________?

   A. Gooch crucible
   B. Filter paper
   C. Sintered crucible
   D. All of the above

5. For a gas where volume and pressures are 1dm3 and 2 atm respectively what should be its new volume when pressure is increased to 6 atm at constant temperature ?

   A. 1/2dm3
   B. 1/3dm3
   C. 1/4dm3
   D. 2/3dm3

6. If temperature of gallium arsenide is increased then its conductivity will___________________?

   A. decrease
   B. increase
   C. remains constant
   D. first decreases then increases

7. The quantity of petrol can be increased by ___________?

   A. Reforming
   B. Induction fueling
   C. Cracking
   D. Refining

   Submitted by: Aamir khan Hullio

8. Alpha (α) particles are helium (He) nucleus with a charge of __________ ?

   A. e
   B. 2e
   C. 3e
   D. 4e

   Submitted by: Rashid Mehmood

9. In SI base units, 1 Bq is equal to __________ ?

   A. 10 disintegration per second
   B. 1.5 disintegration per second
   C. 0.01 disintegration per second
   D. 1 disintegration per second

   Submitted by: Rashid Mehmood

10. Atomic mass of an atom is present in the __________?

    A. Shell
    B. Orbit
    C. Nucleus
    D. Orbital

    Submitted by: Aamir khan Hullio