Chemistry-
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Question

 The compound (C) is:

  1.    
  2.    
  3.    
  4.    

The correct answer is:



    Thebeta-keto acid on heating undergoes decarboxy lation easily

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    The pressure-volume of varius thermodynamic processes is shown in graphs:

    Work is the mole of transference of energy. It has been observed that reversible work done by the system is the maximum obtainable work
    w subscript r e v end subscript greater than w subscript i r r end subscript
    The works of isothermal and adiabatic processes are different from each other
    w subscript i s o t h e r m a l blank r e v e r s i b l e end subscript equals 2.303 n R T log subscript 10 end subscript invisible function application open parentheses fraction numerator V subscript 2 end subscript over denominator V subscript 1 end subscript end fraction close parentheses
    equals 2.303 n R T log subscript 10 end subscript invisible function application open parentheses fraction numerator P subscript 2 end subscript over denominator P subscript 1 end subscript end fraction close parentheses
    w subscript a d i a b a t i c blank r e v e r s i b l e end subscript equals C subscript V end subscript open parentheses T subscript 1 end subscript minus T subscript 2 end subscript close parentheses
    If w subscript 1 end subscript comma w subscript 2 end subscript comma w subscript 3 end subscript and w subscript 4 end subscript are work done in isothermal, adiabatic, isobaric, and isochoric reversible processes, respectively then the correct sequence (for expansion) would be

    The pressure-volume of varius thermodynamic processes is shown in graphs:

    Work is the mole of transference of energy. It has been observed that reversible work done by the system is the maximum obtainable work
    w subscript r e v end subscript greater than w subscript i r r end subscript
    The works of isothermal and adiabatic processes are different from each other
    w subscript i s o t h e r m a l blank r e v e r s i b l e end subscript equals 2.303 n R T log subscript 10 end subscript invisible function application open parentheses fraction numerator V subscript 2 end subscript over denominator V subscript 1 end subscript end fraction close parentheses
    equals 2.303 n R T log subscript 10 end subscript invisible function application open parentheses fraction numerator P subscript 2 end subscript over denominator P subscript 1 end subscript end fraction close parentheses
    w subscript a d i a b a t i c blank r e v e r s i b l e end subscript equals C subscript V end subscript open parentheses T subscript 1 end subscript minus T subscript 2 end subscript close parentheses
    If w subscript 1 end subscript comma w subscript 2 end subscript comma w subscript 3 end subscript and w subscript 4 end subscript are work done in isothermal, adiabatic, isobaric, and isochoric reversible processes, respectively then the correct sequence (for expansion) would be

    chemistry-General
    General
    biology

    The nerve like modified muscle in the right auricle is known as

    The nerve like modified muscle in the right auricle is known as

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     Process A ⟶ B represents

     Process A ⟶ B represents

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    chemistry-

    A: Excess amount of CO, in air is responsible for greenhouse effect.
    R: CO2 is largely produced in respiratory functions.

    A: Excess amount of CO, in air is responsible for greenhouse effect.
    R: CO2 is largely produced in respiratory functions.

    chemistry-General
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    If a,b,c are in A.P the cot space A over 2 comma cot space B over 2 comma cot space C over 2 are in

    If θ is one of the acute angles in a triangle, then the sine of theta is the ratio of the opposite side to the hypotenuse, the cosine is the ratio of the adjacent side to the hypotenuse, and the tangent is the ratio of the opposite side to the adjacent side.

    If a,b,c are in A.P the cot space A over 2 comma cot space B over 2 comma cot space C over 2 are in

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    If θ is one of the acute angles in a triangle, then the sine of theta is the ratio of the opposite side to the hypotenuse, the cosine is the ratio of the adjacent side to the hypotenuse, and the tangent is the ratio of the opposite side to the adjacent side.

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    Systemic heart refers to

    Systemic heart refers to

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    Which is a analgesic drug

    Which is a analgesic drug

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    Penicillin was discovered by -

    Penicillin was discovered by -

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    If fraction numerator b over denominator c plus a end fraction plus fraction numerator c over denominator a plus b end fraction equals 1 then

    All three sides are equal. All three angles are congruent and are equal to 60 degrees. It is a regular polygon with three sides. The perpendicular drawn from vertex of the equilateral triangle to the opposite side bisects it into equal halves.

    If fraction numerator b over denominator c plus a end fraction plus fraction numerator c over denominator a plus b end fraction equals 1 then

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    All three sides are equal. All three angles are congruent and are equal to 60 degrees. It is a regular polygon with three sides. The perpendicular drawn from vertex of the equilateral triangle to the opposite side bisects it into equal halves.

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    Two bodies of mass 1 kg and 3 kg have position vector left parenthesis straight i plus 2 straight j with not stretchy hat on top plus straight k right parenthesis times text  and  end text times left parenthesis negative 3 straight i minus 2 straight j plus straight k right parenthesis   respectively the center of mass of this system has a position vector.

    Two bodies of mass 1 kg and 3 kg have position vector left parenthesis straight i plus 2 straight j with not stretchy hat on top plus straight k right parenthesis times text  and  end text times left parenthesis negative 3 straight i minus 2 straight j plus straight k right parenthesis   respectively the center of mass of this system has a position vector.

    physics-General
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    In straight triangle A B C comma left parenthesis a plus b plus c right parenthesis open parentheses tan A over 2 plus tan space B over 2 close parentheses equals

    In straight triangle A B C comma left parenthesis a plus b plus c right parenthesis open parentheses tan A over 2 plus tan space B over 2 close parentheses equals

    Maths-General
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    physics-

    In HCl macule the separation between the nuclei of the two atoms is about1.27 straight A open parentheses IA equals 10 to the power of negative 10 end exponent straight m close parentheses The approximate location of the center of mass of the molecule is - -A,i with respect of Hydrogen atom ( mass of  is 35.5 times of mass of Hydrogen)

    In HCl macule the separation between the nuclei of the two atoms is about1.27 straight A open parentheses IA equals 10 to the power of negative 10 end exponent straight m close parentheses The approximate location of the center of mass of the molecule is - -A,i with respect of Hydrogen atom ( mass of  is 35.5 times of mass of Hydrogen)

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    chemistry-

    Concrete is produced from a mixture of cement, water and small stones. Small amount of gypsum, C a S O subscript 4 times 2 H subscript 2 O is added in cement production to improve the subsequent hardening of concrete. The elevated temperature during the production of cement may lead to the formation of unwanted hemihydrate
    C a S O subscript 4 times 1 half H subscript 2 O according to reaction,
    C a S O subscript 4 times 2 H subscript 2 O open parentheses s close parentheses rightwards arrow C a S O subscript 4 times 1 half H subscript 2 O open parentheses s close parentheses plus 3 over 2 H subscript 2 O left parenthesis g right parenthesis
    The increment subscript f end subscript H to the power of ⊖ end exponentofC a S O subscript 4 times 2 H subscript 2 O open parentheses s close parentheses comma blank C a S O subscript 4 times 1 half H subscript 2 O open parentheses s close parentheses comma H subscript 2 O left parenthesis g right parenthesis are negative 2021.0 blank k J blank m o l to the power of negative 1 end exponent comma blank minus 1575.0 k J blank m o l to the power of negative 1 end exponent and negative 241.8 blank k J blank m o l to the power of negative 1 end exponent respectively. The respective values of their standard entropies are 194.0, 130.0 and 188.0 blank J blank K to the power of negative 1 end exponent blank m o l to the power of negative 1 end exponent. The values of R equals 8.314 blank J blank K to the power of negative 1 end exponent m o l to the power of negative 1 end exponent equals 0.0831 blank L blank b a r blank m o l to the power of negative 1 end exponent K to the power of negative 1 end exponent
    Answer the following questions on the basis of above information
    Heat change occurring during conversion of 1 kg of C a S O subscript 4 times 2 H subscript 2 O left parenthesis s right parenthesis (molar mass 172 g m o l to the power of negative 1 end exponent) of C a S O subscript 4 times 1 half H subscript 2 O left parenthesis s right parenthesis is equal to

    Concrete is produced from a mixture of cement, water and small stones. Small amount of gypsum, C a S O subscript 4 times 2 H subscript 2 O is added in cement production to improve the subsequent hardening of concrete. The elevated temperature during the production of cement may lead to the formation of unwanted hemihydrate
    C a S O subscript 4 times 1 half H subscript 2 O according to reaction,
    C a S O subscript 4 times 2 H subscript 2 O open parentheses s close parentheses rightwards arrow C a S O subscript 4 times 1 half H subscript 2 O open parentheses s close parentheses plus 3 over 2 H subscript 2 O left parenthesis g right parenthesis
    The increment subscript f end subscript H to the power of ⊖ end exponentofC a S O subscript 4 times 2 H subscript 2 O open parentheses s close parentheses comma blank C a S O subscript 4 times 1 half H subscript 2 O open parentheses s close parentheses comma H subscript 2 O left parenthesis g right parenthesis are negative 2021.0 blank k J blank m o l to the power of negative 1 end exponent comma blank minus 1575.0 k J blank m o l to the power of negative 1 end exponent and negative 241.8 blank k J blank m o l to the power of negative 1 end exponent respectively. The respective values of their standard entropies are 194.0, 130.0 and 188.0 blank J blank K to the power of negative 1 end exponent blank m o l to the power of negative 1 end exponent. The values of R equals 8.314 blank J blank K to the power of negative 1 end exponent m o l to the power of negative 1 end exponent equals 0.0831 blank L blank b a r blank m o l to the power of negative 1 end exponent K to the power of negative 1 end exponent
    Answer the following questions on the basis of above information
    Heat change occurring during conversion of 1 kg of C a S O subscript 4 times 2 H subscript 2 O left parenthesis s right parenthesis (molar mass 172 g m o l to the power of negative 1 end exponent) of C a S O subscript 4 times 1 half H subscript 2 O left parenthesis s right parenthesis is equal to

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    General
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    For an ideal gas, an illustration of three different paths A comma blank open parentheses B plus C close parentheses and left parenthesis D plus E right parenthesis from an initial state P subscript 1 end subscript comma V subscript 1 end subscript comma T subscript 1 end subscript to a final state P subscript 2 end subscript comma blank V subscript 2 end subscript comma blank T subscript 1 end subscript is shown in the given figure

    Path A represents a reversible isothermal expansion from P subscript 1 end subscript comma V subscript 1 end subscriptto P subscript 2 end subscript comma V subscript 2 end subscript. Path left parenthesis B plus C right parenthesis represents a reversible adiabatic expansion (B) from P subscript 1 end subscript V subscript 1 end subscript comma blank T subscript 1 end subscript toP subscript 3 end subscript comma V subscript 2 end subscript comma blank T subscript 2 end subscript followed by reversible heating the gas at constant volume (C) from P subscript 3 end subscript comma blank V subscript 2 end subscript comma blank T subscript 2 end subscriptto P subscript 2 end subscript comma blank V subscript 2 end subscript comma blank T subscript 1 end subscript. Path left parenthesis D plus E right parenthesis represents a reversible expansion at constant pressure P subscript 1 end subscript left parenthesis D right parenthesis from P subscript 1 end subscript comma blank V subscript 1 end subscript comma blank T subscript 1 end subscript to P subscript 1 end subscript comma blank V subscript 2 end subscript comma blank T subscript 3 end subscript followed by a reversible cooling at constant volume V subscript 2 end subscript left parenthesis E right parenthesis from P subscript 1 end subscript comma blank V subscript 2 end subscript comma blank T subscript 3 end subscript to P subscript 2 end subscript comma blank V subscript 2 end subscript comma blank T subscript 1 end subscript
    What is q subscript r e v end subscript , for path left parenthesis A right parenthesis?

    For an ideal gas, an illustration of three different paths A comma blank open parentheses B plus C close parentheses and left parenthesis D plus E right parenthesis from an initial state P subscript 1 end subscript comma V subscript 1 end subscript comma T subscript 1 end subscript to a final state P subscript 2 end subscript comma blank V subscript 2 end subscript comma blank T subscript 1 end subscript is shown in the given figure

    Path A represents a reversible isothermal expansion from P subscript 1 end subscript comma V subscript 1 end subscriptto P subscript 2 end subscript comma V subscript 2 end subscript. Path left parenthesis B plus C right parenthesis represents a reversible adiabatic expansion (B) from P subscript 1 end subscript V subscript 1 end subscript comma blank T subscript 1 end subscript toP subscript 3 end subscript comma V subscript 2 end subscript comma blank T subscript 2 end subscript followed by reversible heating the gas at constant volume (C) from P subscript 3 end subscript comma blank V subscript 2 end subscript comma blank T subscript 2 end subscriptto P subscript 2 end subscript comma blank V subscript 2 end subscript comma blank T subscript 1 end subscript. Path left parenthesis D plus E right parenthesis represents a reversible expansion at constant pressure P subscript 1 end subscript left parenthesis D right parenthesis from P subscript 1 end subscript comma blank V subscript 1 end subscript comma blank T subscript 1 end subscript to P subscript 1 end subscript comma blank V subscript 2 end subscript comma blank T subscript 3 end subscript followed by a reversible cooling at constant volume V subscript 2 end subscript left parenthesis E right parenthesis from P subscript 1 end subscript comma blank V subscript 2 end subscript comma blank T subscript 3 end subscript to P subscript 2 end subscript comma blank V subscript 2 end subscript comma blank T subscript 1 end subscript
    What is q subscript r e v end subscript , for path left parenthesis A right parenthesis?

    chemistry-General
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    maths-

    If t is parameter, A = (aSec t, bTan t) and B = (-aTan t, bSec t), O = (0, 0) then the locus of the centroid of straight capital delta OAB is

    If t is parameter, A = (aSec t, bTan t) and B = (-aTan t, bSec t), O = (0, 0) then the locus of the centroid of straight capital delta OAB is

    maths-General
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