Latest IIT-JEE Aptitude Question SOLUTION: The species which by definition has ZERO standard molar enthalpy of formation at 298 K is (A) Br2 (g) (B) Cl2 (g) (C) H2O (g) (D) CH4(g)

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Previous Question: Which of the following is the wrong statement ? (1) Ozone is violet-black in solid state (2) Ozone is diamagnetic gas (3) ONCl and ONO– are not isoelectronic (4) O3 molecule is bent Next 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

(#M40027853) IIT-JEE question 2010 question Keep an EYE

The species which by definition has ZERO standard molar enthalpy of formation at 298 K is
(A) Br2 (g) (B) Cl2 (g)
(C) H2O (g) (D) CH4(g): Asked In IIT-JEE MAN (10 years ago); Unsolved; Is this Puzzle helpful? (10) (5) Submit Your Solution

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Previous Question: Which of the following is the wrong statement ? (1) Ozone is violet-black in solid state (2) Ozone is diamagnetic gas (3) ONCl and ONO– are not isoelectronic (4) O3 molecule is bent Next 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

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