CHEMISTRY

 1. What type of flame is produced when the oxygen supply is sufficient?
A.Yellow flame    
B.Blue flame    
C.Orange flame    
D.None of the above    
2. What is the common name of ethanoic acid?    

A.Acetic acid    
B.Formic acid    
C.Propionic acid    
D.Butanoic acid    

3.Which of the following is the chemical property of carbon compounds?
A.Combustion reactions    
B.Substitution reactions    
C.Addition reactions    
D.All of the above
4.The cooking gas (LPG) mainly consists of:
A.Butane    
B.Ethene     
C.Ethyne    
D.Propene       
5.The reaction in which an unsaturated hydrocarbon combines with another substance to give a single product is called:    
A.Addition reaction    
B.Combustion reaction    
C.Combination reaction    
D.Substitution reaction

ANSWERS:

1. Ans. B

2. Ans. A

3. Ans. D

4. Ans. A

5. Ans. A