Question
DS for the reaction: MgCO3(s) → MgO(s) + CO2(g) will be -
- 0
- –ve
- +ve
- ¥
The correct answer is: ¥
Related Questions to study
A point P moves in counter-clockwise direction on a circular path as shown in the figure. The movement of P is such that it sweeps out length 
where 
is in metre and t is in second. The radius of the path is 20 m. The acceleration of P when t =2s is nearly
A point P moves in counter-clockwise direction on a circular path as shown in the figure. The movement of P is such that it sweeps out length where is in metre and t is in second. The radius of the path is 20 m. The acceleration of P when t =2s is nearly
For the reaction N2(g)+3H2(g)→2NH3(g),DH is-
For the reaction N2(g)+3H2(g)→2NH3(g),DH is-
Three identical spheres of mass 
each are placed at the corners of an equilateral triangle of side 2
. Taking one of the corner as the origin, the position vector of the centre of mass is
Three identical spheres of mass each are placed at the corners of an equilateral triangle of side 2. Taking one of the corner as the origin, the position vector of the centre of mass is
Four bodies of equal mass start moving with same speed are shown in the figure. In which of the following combination the centre of mass will remain at origin?
Four bodies of equal mass start moving with same speed are shown in the figure. In which of the following combination the centre of mass will remain at origin?
From the reactions: C(s)+2H2(g)→CH4(g)DH=–XK cal C(g)+4H(g)→CH4(g),DH=–X1Kcal CH4(g)→CH3(g)+H(g)DH=+Y(Kcal) Bond energy of C–H bond is-
From the reactions: C(s)+2H2(g)→CH4(g)DH=–XK cal C(g)+4H(g)→CH4(g),DH=–X1Kcal CH4(g)→CH3(g)+H(g)DH=+Y(Kcal) Bond energy of C–H bond is-
From a circular disc of radius 
and mass 9 , a small disc of radius /3 is removed from the disc. The moment of inertia of the remaining disc about an axis perpendicular to the plane of the disc and passing through 
is
From a circular disc of radius and mass 9 , a small disc of radius /3 is removed from the disc. The moment of inertia of the remaining disc about an axis perpendicular to the plane of the disc and passing through is
The instantaneous velocity of a point 
of the given rod of length 0.5 m is 3 
in the represented direction. The angular velocity of the rod for minimum velocity of end A is
The instantaneous velocity of a point of the given rod of length 0.5 m is 3 in the represented direction. The angular velocity of the rod for minimum velocity of end A is
The backbone of RNA consists of which of the following sugar?
The backbone of RNA consists of which of the following sugar?
Consider the following statements and choose the correct one
Consider the following statements and choose the correct one
Identify A to F in the sectional view of a chloroplast showing the different parts
Identify A to F in the sectional view of a chloroplast showing the different parts
Organelle important in spindle formation during nuclear division is
Organelle important in spindle formation during nuclear division is
A widely accepted, improved model of cell membrane is
A widely accepted, improved model of cell membrane is
Rough endoplasmic reticulum differs from smooth walled endoplasmic reticulum due to the presence of
Rough endoplasmic reticulum differs from smooth walled endoplasmic reticulum due to the presence of
Middle lamella is present
Middle lamella is present
A are granular structures first observed under electron microscope as dense particles by …B… (1953). Here, A and B refer to
A are granular structures first observed under electron microscope as dense particles by …B… (1953). Here, A and B refer to
