Kevlar

Q. Which of the following reagent is useful for separating aniline from nitrobenzene?

1. 
2. 
3. 
4. 

Q. The compound which will dissolve in aqueous NaOH is para nitro phenol.why?

Q.

Which among the following is used as an antiseptic?

1. Benzalamine

2. Benzaldehyde

3. Malic anhydride

4. Phenol

Q. Mechanism of polymerisation of ethyne in presence of CuCl and NH4Cl.

Q. Teflon is a polymer of :

1. ethylene
2. vinyl chloride
3. acetonitrile
4. tetrafluoroethene

Q. which chemical is used in the production of plastic bag?

Q. Which of the following represents the correct chemical structure of Kevlar?

1. 
2. 
3. 
4. 

Q. Diethyl ether is used as:

1. anaesthetic
2. solvent
3. refrigerant
4. all of the above

Q. Which of the following regarding aniline is not true?

1. It is less basic than ethylamine
2. It reacts with Na giving hydrogen
3. It can be steam distilled
4. It is highly soluble in water.

Q.

What amount of bromine will be required to convert 2 gr of phenol in 2, 4, 6-tribromo phenol?

1. 4.0

2. 6.0

3. 10.22

4. 20.44

Q. Kevlar is made from which of the following materials?

1. 1, 4 phenylene diamine
2. Hexamethylene diamine
3. Terephthaloyl chloride
4. phenoyl dichloride

Q. Why is teflon used as a tape for sealing purpose?

Q. use of plastic in healthcare industry

Q.

What is the repeating unit in the condensation polymer obtained by combining HOOC-CH₂-CH₂-COOH (succinic acid) & H₂N-CH₂-CH₂-NH₂ (ethylenediamine)

Q. Which material is used in bullet proof vests?

1. PMMA
2. Bakelite
3. Kevlar
4. Melamine resin

Q. Which of the following represents the correct chemical structure of Kevlar?

1. 
2. 
3. 
4. 

Q. Kevlar is made from which of the following materials?

1. 1, 4 phenylene diamine
2. Hexamethylene diamine
3. Terephthaloyl chloride
4. phenoyl dichloride