Which of the following contains least amount of N2 ?

Related Mcqs:

1. Which of the following fuel gases contains maximum amount of carbon monoxide ?

   A. Coke oven gas
   B. Water gas
   C. Blast furnace gas
   D. L.D. converter gas

2. Sea water contains about ______________________ ppm of bromine ?

   A. 5
   B. 70
   C. 500
   D. 1700

3. Pure rectified spirit contains about _________________ percent alcohol?

   A. 45
   B. 70
   C. 95
   D. 99.5

4. Fish contains about _______________ percent oil ?

   A. 5
   B. 10
   C. 20
   D. 35

5. Brackish water which contains mostly dissolved salt, can be purified by the __________________ process?

   A. Reverse osmosis
   B. Sand filter
   C. Lime soda
   D. Permutit

6. Paper grade bamboo contains about _______________ percent cellulose ?

   A. 5
   B. 20
   C. 40
   D. 60

7. The amount of benzene present in pure Benzol is about _______________ percent ?

   A. 30
   B. 50
   C. 70
   D. 90

8. Vegetable oils contain large quantity of glycerides of unsaturated acids. When the vegetable oils contain high amount of saturated fatty acids, it is termed as ____________________ oil?

   A. Drying
   B. Semi-drying
   C. Non-drying
   D. None of these

9. Which of the following is not responsible for causing permanent hardness of water ?

   A. Ca(HCO3)2
   B. CaCl2
   C. MgCl2
   D. None of these

10. Which of the following is a bleaching agent added in the detergents to facilitate removal of stains caused due to blood, tea etc ?

    A. Sodium silicate
    B. Sodium borate
    C. Sodium tripolyphosphate (STPP)
    D. Caustic soda