IIT-JEE 2011 Paper 2 Offline

MCQ (Single Correct Answer)

-1

Match the transformations in column I with appropriate options in column II

Column I
(A) CO₂(s) $$\to$$ CO₂(g)
(B) CaCO₃(s) $$\to$$ CaO(s) + CO₂(g)
(C) 2H $$\to$$ H₂(g)
(D) P_{(white, solid)} $$\to$$ P_{(red, solid)}

Column II
(p) phase transition
(q) allotropic change
(r) $$\Delta H$$ is positive
(s) $$\Delta S$$ is positive
(t) $$\Delta S$$ is negative

A $$\to$$ p,r,s; B $$\to$$ r,s; C $$\to$$ t; D $$\to$$ p,q,t

A $$\to$$ r,s; B $$\to$$ p,s; C $$\to$$ t; D $$\to$$ p,q,t

A $$\to$$ p,r,s; B $$\to$$ r,s; C $$\to$$ r; D $$\to$$ p,t

A $$\to$$ p,r,s; B $$\to$$ r,s; C $$\to$$ t; D $$\to$$ q,t

IIT-JEE 2010 Paper 1 Offline

MCQ (Single Correct Answer)

-0.75

The species which by definition has ZERO standard molar enthalpy of formation at 298 K is

Br₂ (g)

Cl₂ (g)

H₂O (g)

CH₄ (g)

IIT-JEE 2010 Paper 1 Offline

MCQ (Single Correct Answer)

-0.25

The bond energy (in kcal mol^-1) of a C-C single bond is approximately

100

1000

IIT-JEE 2008 Paper 2 Offline

MCQ (Single Correct Answer)

-1

Statement 1 : There is a natural asymmetry between converting work to heat and converting heat to work.

Statement 2 : No process is possible in which the sole result is the absorption of heat from a reservoir and its complete conversion into work.

Statement 1 is True, Statement 2 is True; Statement 2 is a CORRECT explanation for Statement 1.

Statement 1 is True, Statement 2 is True; Statement 2 is a NOT CORRECT explanation for Statement 1.

Statement 1 is True, Statement 2 is False.

Statement 1 is False, Statement 2 is True.

JEE Advanced Subjects