Traffic policemen on duty at busy street crossings during heavy traffic rush hours are advised to use:__________?

Related Mcqs:

1. When electrons collide with heavy metals than ___________ are produced?

   A. Beta-rays
   B. Alpha-rays
   C. X-rays
   D. Gamma-rays

2. Which of the following is not a heavy industry ?

   A. iron
   B. fertilizer
   C. paper
   D. none

3. During which process empty spaces between particles become minimum ?

   A. ionization
   B. condensation
   C. fusion
   D. evaporation

4. The pressure during the molar heat of fusion is kept________________?

   A. 0 atmosphere
   B. one atmosphere
   C. 2 atmosphere
   D. 10 atmosphere

5. If a physical and chemical change takes place at a constant pressure then the heat change during the process is called__________________?

   A. Heat of transition
   B. Heat of fusion
   C. Enthalpy change
   D. All of above

6. During sulphonation of benzene H2SO4 generates the electrophile _________________?

   A. HSO4-
   B. SO2
   C. SO3
   D. H+

7. During Electrolysis of Water the product @cathode obtained is ___________?

   A. Hydrogen Gas & Water
   B. Oxygen Gas & Water
   C. CO & Water
   D. Hydrogen & Carbon monoxide

   Submitted by: Aamir khan Hullio

8. During electrolysis of Water, the product obtained at cathode is ___________?

   A. Hydrogen Gas &Water
   B. Oxygen Gas &Water
   C. Only oxygen
   D. Only Water
   Aamir khan Hullio

9. Distance at which attractive forces of hydrogen overcome repulsive forces is __________ ?

   A. 75.2pm
   B. 75.3pm
   C. 75.5pm
   D. 75.4pm

   Submitted by: Rashid Mehmood

10. Nitrate (NO3) ions are obtained by the process of __________?

    A. Nitrification
    B. Fermentation
    C. Denitrification
    D. None of these

    Submitted by: Sana