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

Related Mcqs:

1. 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

2. If a graph is plotted between temperature on x-axis and volume on y-axis for 1 mole of gas then we get straight line which cuts the temperature exis at________________?

   A. 0?C
   B. 273.16K
   C. ?273.16 K
   D. ?273.16?C

3. At constant temperature the pressure of an ideal gas is doubled its density becomes_______________?

   A. Half
   B. Double
   C. Same
   D. None

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. 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

6. Octane rating of Gasoline can be increased by __________?

   A. Refining
   B. Cracking
   C. Reforming
   D. None of These

   Submitted by: Aamir khan Hullio

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

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

   Submitted by: Aamir khan Hullio

8. The quantity of heat required to convert one mole of liquid into its vapours at its boiling point is called molar heat of__________________?

   A. vaporization
   B. evaporation
   C. crystallization
   D. sublimation

9. When 0.01 moles of NaOH are added to a buffer solution, its PH changes from 4.745 to 4.832. What is its?

   A. 0.115
   B. 0.900
   C. 0.015
   D. 0.215

   Submitted by: Muhammad Ali Kunbhar

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