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How many sp²-sp² sigma bonds are present in the compound given below?

Which of the following rings is highly strained?
1. 
2. 
3. 
4. 

Most stable carbocation among the following is:
1. 
2. 
3.
4. ${}^{\oplus }{\mathrm{CH}}_3$

Arrange the following compounds in increasing order of their \(pK_a\) values:

(x)
(y)
(z)	\(\mathrm{CH}_3-\mathrm{OH}\)

1. y < x < z
2. x < y < z
3. y < z < x
4. x < z < y

In the give pair identify most acidic compound in (A) and (B). Most basic in (C) and (D).
(A) 
(B) 
(C) 
(D) 
1. A-I, B-II, C-I, D-II
2. A-II, B-I, C-I, D-II
3. A-II, B-II, C-II, D-II
4. A-I, B-II, C-I, D-I

Circle represents most basic atoms in these molecule. Which of the following is correct representation?
1. 
2. 
3. 
4. All of these

Arrange the following in decreasing order of their acidic strengths.

1. A > C > B > D
2. A > D > B > C
3. A > D > C > B
4. D > A > C > B

The correct order of heats of combustion of above compounds is :
1. I > II > III
2. II > I > III
3. III > II > I
4. III > I > II

Compare carbon-carbon bond rotation across A, B, and C
1. A > B > C
2. A > C > B
3. B > A > C
4. B > C > A

Which one of the following has the smalles heat of combustion?
1. 
2. 
3. 
4. 

Which of the following $\mathrm{\sigma }$-bonds participate in hyperconjugation?

Which of the following is the strongest Bronsted base?
1. 
2. 
3. 
4. 

Which statement is incorrect in respect of the above reaction?
1. Product is aromatic
2. Product has high dipole moment
3. Product has less resonance energy
4. Product is soluble in polar solvent

Which of the following alkenes is the most stable?

1.		2.
3.		4.

The hydrogen indicated by arrow will be easily removed as:
(1) H⁺
(2) H^-
(3) H^{*
_{(4) H}-2}

Among the given sets, which represents the resonating structures?

1.	and
2.	and
3.	and
4.	and

The most stable carbocation among the following is:

1.		2.
3.		4.

Which one among the following carbocations has the longest half-life ?
(1) 
  
(2) 
   
(3) 
  
(4) 
  

The correct order of resonance energy among the given below compounds is:

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

In which pair is the second ion more stable than the first?

(i)
(ii)
(iii)
(iv)

   
1. (i) and (ii) 
2. (ii) and (iii)
3. (ii) and (iv)
4. (iii) and (iv) 

The most reactive amine towards dilute hydrochloric acid is _
(1) 
   
(2) 
   
(3) 
    
(4)