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Maths-

General

Easy

Question

$c o s h to the power of 4 end exponent left parenthesis x right parenthesis minus s i n h to the power of 4 end exponent left parenthesis x right parenthesis equals$

$c o s h x$
cosh² $x$
$\sinh x$
sinh² $x$

The correct answer is: cosh² $x$

$cosh to the power of 4 invisible function application x minus sinh to the power of 4 invisible function application x equals cosh invisible function application 2 x$

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If tanh $x equals fraction numerator 3 over denominator 5 end fraction$ then sin h $left parenthesis 2 x right parenthesis equals$

If tanh $x equals fraction numerator 3 over denominator 5 end fraction$ then sin h $left parenthesis 2 x right parenthesis equals$

A box contains 4 packs of chocolates. Anusha picks out a pack at random. What is the probability that she picks
i) Perk ? ii) Kitkat ?

A box contains 4 packs of chocolates. Anusha picks out a pack at random. What is the probability that she picks
i) Perk ? ii) Kitkat ?

Two vertical poles 20m and 80m heigh stand apart on a horizontal plane The height of the point of intersection of the lines joining the top of each pole to the foot of the other is

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5 mole of an ideal gas expand isothermally and irreversibly from a pressure of 10atm to 1atm against a constant external pressure of 1 atm. $w subscript text irr end text end subscript$ at 300 K is :

5 mole of an ideal gas expand isothermally and irreversibly from a pressure of 10atm to 1atm against a constant external pressure of 1 atm. $w subscript text irr end text end subscript$ at 300 K is :

chemistry-General

In the conversion of lime stone to lime, $C a C O subscript 3 left parenthesis 5 right parenthesis end subscript rightwards arrow C a O subscript left parenthesis s right parenthesis end subscript plus C O subscript 2 left parenthesis text end text g right parenthesis end subscript$ the values of $capital delta H to the power of ring operator end exponent$ and $capital delta S to the power of ring operator end exponent$ are $plus 179.1 text end text k J text end text m o l to the power of negative 1 end exponent$ and $160.2 J K to the power of negative 1 end exponent text end text m o l minus 1$ respectively at $298 text end text K$ and 1 bar. Assuming, $capital delta H to the power of ring operator end exponent$ and $capital delta S to the power of ring operator end exponent$ do not change with temperature; temperature above which conversion of lime stone to lime will be spontaneous is

In the conversion of lime stone to lime, $C a C O subscript 3 left parenthesis 5 right parenthesis end subscript rightwards arrow C a O subscript left parenthesis s right parenthesis end subscript plus C O subscript 2 left parenthesis text end text g right parenthesis end subscript$ the values of $capital delta H to the power of ring operator end exponent$ and $capital delta S to the power of ring operator end exponent$ are $plus 179.1 text end text k J text end text m o l to the power of negative 1 end exponent$ and $160.2 J K to the power of negative 1 end exponent text end text m o l minus 1$ respectively at $298 text end text K$ and 1 bar. Assuming, $capital delta H to the power of ring operator end exponent$ and $capital delta S to the power of ring operator end exponent$ do not change with temperature; temperature above which conversion of lime stone to lime will be spontaneous is

chemistry-General

Which of the following expressions is correct?

Which of the following expressions is correct?

chemistry-General

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Which of the following is true for spontaneous process?

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ΔG for the reaction $x plus y rightwards arrow z$ is -4.606 kcal. The value of equilibrium constant of the reaction at 227°C is

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Driving force of a reaction is the

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If the inversion temperature of a gas is -80°C, then it will produce cooling under Joule-Thomson effect at

If the inversion temperature of a gas is -80°C, then it will produce cooling under Joule-Thomson effect at

chemistry-General

For a perfectly crystalline solid $C subscript p comma m end subscript equals a T to the power of 3 end exponent plus b T$ , where a and $b$ are constant. If $C subscript p comma m end subscript$ is 0.40 J/K mol at 10 K and 0.92 J/K mol at 20 K, then molary entropy at 20 K is :

For a perfectly crystalline solid $C subscript p comma m end subscript equals a T to the power of 3 end exponent plus b T$ , where a and $b$ are constant. If $C subscript p comma m end subscript$ is 0.40 J/K mol at 10 K and 0.92 J/K mol at 20 K, then molary entropy at 20 K is :

chemistry-General

Two mole of an ideal gas is expanded irreversibly and isothermally at 37°C until its volume is doubled and 3.41 kJ heat is absorbed from surroundings. $capital delta S subscript text total end text end subscript$ (system +surroundings) is

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One mole of an ideal monoatomic gas at 27°C is subjected to a reversible isoentropic compression until final temperature reached to 327°C If the initial pressure was $1.0$ atm then find the value of In $P subscript 2 end subscript colon$

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chemistry-General

Calculate ΔS for 3 mole of a diatomic ideal gas which is heated and compressed from 298 K and 1 bar to 596 K and 4 bar.

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chemistry-General

Considering entropy(s) at a thermo dynamic parameter, the criterion for the spontanity of any process is

Considering entropy(s) at a thermo dynamic parameter, the criterion for the spontanity of any process is

chemistry-General

parallel

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