DRDO Questions for chemical engineering and diploma written test..

1- What is the maximum value measured by Seismograph ?
    Ans. 100

2- Which one is not unit-less number?
   a) Eular's Number
   b) Reynold Number
   c) Friction factor
   d) none of these
Ans: d

3- Who is the scientific advisor of defence minister of India?
Ans: Dr. Avinash Chander

4- Component of crude oil having maximum octane number?
Ans- Aromatics

5- Who got gold medal in wrestling for 74 Kg in commonwealth games?
Ans: Sushil Kumar

6- What will be total discount on a commodity, if continuous discount is 10%, 12% & 15%?
Ans: 36.68%

7- Time taken to fill a tank when two valve open simultaneously. the flow rate of one valve is 12 m3/s and second valve is 24 m3/s

8- What is the monomer of poly vinyl chloride?
Ans: vinyl chloride or chloroethene 

9- Neoprene is chemically known as?
Ans: Poly chloroprene


10- Due to its excellent permeability to air and gas, the tubes of automobile tyres is made of?
Ans: Butyl Rubber

11- Tubeless tyres are made of ? Which is a co-polymer of isoprene and isobutylene.
Ans: Butyl rubber

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