Tip of the match stick contains a mixture of________________?

Related Mcqs:

1. Speisses is a mixture of the following ?

   A. Arsenides of heavy metals
   B. Antimonides of heavy metals
   C. Arsenides & antimonides of heavy metals
   D. Iron, cobalt and nickel

2. ‘GASOHOL’ widely used in Brazil as a motor fuel is a mixture of alcohol and____________________?

   A. Petrol
   B. LPG
   C. Light hydrocarbon gases (e.g. butane or propane)
   D. None of these

3. Joule-Thomson co-efficient is the ratio of________________?

   A. Pressure change to temperature change occuring during adiabatic compression of a gas
   B. Pressure change to temperature change occuring during adiabatic throttling of a gas
   C. Temperature change to pressure change occuring during adiabatic compression of a gas
   D. Temperature change to pressure change occuring during adiabatic throttling of a gas

4. Out of the following, maximum temperature drop for a given heat flow & for the same thickness will be in the case of________________?

   A. Steel
   B. Glass wood
   C. Copper
   D. Fireclay bricks

5. Cast iron contains ____________________ percent carbon?

   A. 2.5
   B. 3.75
   C. 4.75
   D. 5.25

6. Natural water contains approximately ______________ percent of heavy water?

   A. 0.015
   B. 0.71
   C. 1.2
   D. 3.5

7. Ganister contains maximum percentage of_________________?

   A. FeO
   B. SiO2
   C. MgO
   D. MnO2

8. The leaching solvent used in Baeyer’s process for the purification of bauxite is___________________?

   A. Ammonium hydroxide
   B. Sodium carbonate
   C. Sodium hydroxide
   D. Ammonium carbonate

9. Current employed in resistance welding ranges from ____________________ kVA/cm2?

   A. 1.2 to 2.5
   B. 4.5 to 6.2
   C. 7.5 to 8.5
   D. 10.5 to 15.5

10. Liquid nitrogen containers can be made from ___________________?

    A. Ferritic stainless steel
    B. HSLA steel
    C. Titanium
    D. Austenitic stainless steel