Question
The value of 
is
- 45°
- 90°
- 15°
- 30°
The correct answer is: 30°
.
Related Questions to study
The enthalpy of vapourisation of liquid water using the data :
The enthalpy of vapourisation of liquid water using the data :
The conversion A to B is carried out by the following path :
Given 
e.u.,
e.u.,
e.u.
Where e.u. is entropy unit then 
is
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Given e.u.,
e.u., e.u.
Where e.u. is entropy unit then is
A reversible process is taking place at constant temperature and pressure. Then at equilibrium
A reversible process is taking place at constant temperature and pressure. Then at equilibrium
Consider the following processes :
For B+D
E+2C, 
will be-
Consider the following processes :
For B+DE+2C, will be-
From the following bond energies :
bond energy : 
bond energy : 
bond energy : 
bond energy : 
Enthalpy for the reaction,
will be:
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bond energy :
bond energy :
bond energy :
bond energy :
Enthalpy for the reaction,
will be:
For a phase change 
For a phase change
The heat change during the reaction 24 gC and 128 gS following the change 
cal
The heat change during the reaction 24 gC and 128 gS following the change cal
In which reaction ΔS is positive -
In which reaction ΔS is positive -
The heat of combustion of ethanol determined in a bomb calorimeter is -670.48 K. Cals mole-1 at 25°C. What is at 25°C for the reaction-
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The binding energies per nucleon of 
and 
are 5.6 MeV and 7.06 MeV respectively, then the energy of the reaction 
will be
The binding energies per nucleon of and are 5.6 MeV and 7.06 MeV respectively, then the energy of the reaction will be
Which of the following is true for a sample of isotope containing 
and 
Which of the following is true for a sample of isotope containing and
When a hydrogen atom emits a photon in going from n =5 to n = 1, its recoil speed is almost
When a hydrogen atom emits a photon in going from n =5 to n = 1, its recoil speed is almost
Statement 1: Density of all the nuclei is same
Statement 2: Radius of nucleus is directly proportional to the cube root of mass number
Statement 1: Density of all the nuclei is same
Statement 2: Radius of nucleus is directly proportional to the cube root of mass number
Statement 1: The mass of a nucleus can be either less than or more than the sum of the masses of nucleons present in it
Statement 2: The whole mass of the atom is considered in the nucleus
Statement 1: The mass of a nucleus can be either less than or more than the sum of the masses of nucleons present in it
Statement 2: The whole mass of the atom is considered in the nucleus
Statement 1: Hydrogen atom consists of only one electron but its emission spectrum has many lines
Statement 2: Only Lyman series is found in the absorption spectrum of hydrogen atom whereas in the emission spectrum, all the series are found
Statement 1: Hydrogen atom consists of only one electron but its emission spectrum has many lines
Statement 2: Only Lyman series is found in the absorption spectrum of hydrogen atom whereas in the emission spectrum, all the series are found
