IIT-JEE Exam

The bond energy (in kcal mol–1) of a C—C single bond is approximately
(A) 1 (B) 10
(C) 100 (D) 1000

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IIT-JEE Other Question

The ionization isomer of ( ) ( ) 2 4 2 ⎡⎣Cr H O Cl NO ⎤⎦Cl is
(A) ( ) ( ) 2 4 2 2 ⎡⎣Cr H O O N ⎤⎦Cl (B) ( ) 2 4 2 2 [Cr H O Cl ](NO )
(C) ( ) ( ) 2 4 ⎡⎣Cr H O Cl ONO ⎤⎦Cl (D) ( ) 2 4 2 2 2 ⎡⎣Cr H O Cl (NO )⎤⎦ ⋅H O The synthesis of 3–octyne is achieved by adding a bromolkane into a mixture of sodium amide and an
alkyne. The bromoalkane and alkyne respectively are
(A) 2 2 2 2 3 BrCH CH CH CH CH and 3 2 CH CH C ≡ CH (B) 2 2 3 BrCH CH CH and 3 2 2 CH CH CH C ≡ CH
(C) 2 2 2 2 3 BrCH CH CH CH CH and 3 CH C ≡ CH (D) 2 2 2 3 BrCH CH CH CH and 3 2 CH CH C ≡ CH .