What is decreasing order of basicity of 1°, 2° and 3° ethyl amines and ammonia in aqueous medium?          

1. NH₃>C₂H₅NH₂>(C₂H₅)₂NH>(C₂H₅)₃N

2. (C₂H₅)₃N>(C₂H₅)₂NH>C₂H₅NH₂> NH₃

3. (C₂H₅)₃NH>C₂H₅NH₂>(C₂H₅)₃N>NH₃

4. (C₂H₅)₂NH>(C₂H₅)₃N>C₂H₅NH₂>NH₃

Which of the following is more basic than aniline?                    

1. Diphenylamine

2. Triphenylamine

3. p-nitroaniline

4. Benzylamine

Which one of the following compounds is most acidic?                                   

1. 

2. 

3. 

4. 

Which of the following represents the correct order of acidity in the given compounds?

1. F${\mathrm{CH}}_2$COOH > ${\mathrm{CH}}_3$COOH > Br${\mathrm{CH}}_2$COOH > Cl${\mathrm{CH}}_2$COOH

2. Br${\mathrm{CH}}_2$COOH > Cl${\mathrm{CH}}_2$COOH > F${\mathrm{CH}}_2$COOH > ${\mathrm{CH}}_3$COOH

3. F${\mathrm{CH}}_2$COOH > Cl${\mathrm{CH}}_2$COOH > Br${\mathrm{CH}}_2$COOH > ${\mathrm{CH}}_3$COOH

4. ${\mathrm{CH}}_3$COOH > Br${\mathrm{CH}}_2$COOH > Cl${\mathrm{CH}}_2$COOH > F${\mathrm{CH}}_2$COOH 

Among the following the strongest acid is                                 

1. CH₃COOH

2. CH₂ClCH₂COOH

3. CH₂ClCOOH

4. CH₃CH₂COOH

Increasing order of acidic strength among p-methoxyphenol (I), p-methylphenol (II) and p-nitrophenol (III) is-

1. III, I, II           

2. II, I, III             

3. III, II, I             

4. I, II, III

Which of the following represent the correct decreasing order of acidic strength of following? 

(i) Methanoic acid

(ii) Ethanoic acid

(iii) Propanoic acid

(iv) Butanoic acid

1. (i)>(ii)>(iii)>(iv)

2. (ii)>(iii)>(iv)>(i)

3. (i)>(iv)>(iii)>(ii)

4. (iv)>(i)>(iii)>(ii)

The strongest acid, among the compounds given below, is:
1. HC≡CH              
2. C₆H₆
3. C₂H₆                
4. CH₃OH

Which order for basic character of amine is correct for following compounds?

1. 3>1>2>5>4              2. 3>2>1>5>4

3. 3>1>2>4>5              4. 3>2>1>4>5

In the following compounds

The order of acidity is-

1. III>IV>I>II              
2. I>IV>III>II
3. II>I>III>IV              
4. IV>III>I>II