Nitrogen is an essential component of ____________________?

Related Mcqs:

1. High purity nitrogen is used in__________________?

   A. Making protective gas (95% N2 + 5% H2) for annealing of cold rolled steel strip coils
   B. Fire fighting purposes
   C. Both A. & B.
   D. Neither A. nor (B)

2. Major component of flint glass is_____________________?

   A. Lead oxide
   B. Silica
   C. Alumina
   D. Soda

3. The main component of Pyrex glass is_____________________?

   A. Zinc
   B. Lead
   C. Boron
   D. Selenium

4. Which of the following is the second major component of cement ?

   A. Al2O3
   B. SiO2
   C. CaO
   D. Fe2O3

5. Essential oils are usually obtained using__________________?

   A. Steam distillation
   B. Extractive distillation
   C. Solvent extraction
   D. Leaching

6. Styrene (a monomer for the production of polystyrene) is commercially produced by ____________________?

   A. Catalytic dehydrogenation of ethyl benzene
   B. Dehydration of ethyl alcohol followed by hydrogenation
   C. Reacting ethylene oxide with acetaldehyde
   D. Fermentation of starch

7. ____________________ process is used for producing soda ash?

   A. Chamber
   B. Chance
   C. Tromp
   D. Solvay

8. Cumene (isopropyl benzene) is made by ____________________?

   A. Oxidation of naphthalene
   B. Propylene alkylation of benzene
   C. Polymerisation of a mixture of benzene & propylene
   D. None of these

9. Trinitrotoluene (TNT), an explosive, is made by the nitration of ____________________?

   A. Nitrobenzene
   B. Toluene
   C. Nitrotoluene
   D. Benzene

10. A substance produced by a living organism and capable of anti-microbial activity is called a/an < ____________________?

    strong>A. Antibiotic
    B. Antiseptic
    C. Disinfectant
    D. None of these