Recently Active Miscellaneous Questions

Which of the following is not a function of a salt bridge? ...

A cell reaction is given as anode: Zn(s)→Zn2+(aq)+2e- cathode: Cu2+(aq)+2e-→Cu(s) it can be represented as ...

Which of the following may not be present in all galvanic cells? ...

Which one of the following is is incorrect regarding an electrochemical cell? ...

Find ΔG when 1 mol of water at 100°C and 1 atm pressure is converted into steam at 100°C and 1 atm pressure. ...

For a reaction, ΔG=x kJ/mol & for another reaction ΔG=y kJ/mol. Former is non-spontaneous while along with later it is spontaneous. This implies ...

for exothermic reaction & ΔS positive, the reaction is spontaneous at temperature of ...

Which of the following describes the criterion of spontaneity? ...

A reaction has both ΔH & ΔS negative. The rate of reaction ...

In any natural process ...

Given the following entropy values (J mol-1 K-1) at 298 K and 1 atm: H2(g):130.6 Cl2(g):223.0 HCl(g):186.7 The entropy change for the reaction H2(g)+Cl2(g)→2HCl(g) is ...

The enthalpy of vaporisation of a substance is 840 J mol-1 and its boiling point is 27°C. Find the entropy of vaporisation ...

2 mol of an ideal gas at 27°C temp. is expanded reversibly from 2 litres to 20 litres. Find the entropy change (R=2cal/mol K) ...

for the reaction 2SO2(g)+O2(g)→2SO3(g) the entropy ...

Entropy change of a system and its surroundings in equilibrium ...

the measure of randomness of system is ...

it is impossible to convert heat completely into work is the statement of ...

one curie of radioactivity is equal to ...

If the quantity of a radioactive element is doubled, the rate of disintegration is ...

Half life of radium is 1580 years. Its average life will be ...

The half life period of a radioactive element is 140 days. After 560 days, one gram of the element will be reduced to ...

What is the half life of a radioactive substance if 87.5% of any given amount of substance disintegrates in 40 minutes? ...

find the value of t1/2 in the previous question ...

Initially 100 g of radioactive substance is taken. After 10 days 1 g is left, find the rate constant for the decay ...

Radioactive decay follows the kinetics of ...

gamma rays are ...

The ionizing power is in the order ...

penetrating power of γ-rays is ...

the correct order of the effect of α,β,γ rays on photographic film is ...

Which has maximum deflection in magnetic field? ...