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Engineering
3 days, 22 hours ago

 The reason for “drug induced poisoning” is :

  • Option 1)

     Binding reversibly at the active site of the enzyme

  • Option 2)

    Bringing conformational change in the binding site of enzyme

  • Option 3)

     Binding irreversibly to the active site of the enzyme

  • Option 4)

    Binding at the allosteric sites of the enzyme

     

 

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S solutionqc
Answered 2 days, 22 hours ago
Option 1)  Binding reversibly at the active site of the enzyme Option 2) Bringing conformational change in the binding site of enzyme Option 3)  Binding irreversibly to the active site of the enzyme Option 4) Binding at the allosteric sites of the enzyme  
Engineering
3 days, 23 hours ago

A mixture containing the following four compounds is extracted with 1M HCl. The compound that goes to aqueous layer is :
        

 

  

  • Option 1)

     (I)

  • Option 2)

     (II)

  • Option 3)

     (III)

  • Option 4)

     (IV)

 

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S solutionqc
Answered 2 days, 23 hours ago
Option 1)  (I) Option 2)  (II) Option 3)  (III) Option 4)  (IV)
Engineering
3 days, 23 hours ago

A solution containing a group-IV cation gives a precipitate on passing H2S.  A solution of this precipitate in dil.HCl produces a white precipitate with NaOH solution and bluish-white precipitate with basic potassium ferrocyanide.  The cation is :

  • Option 1)

    Co2+

  • Option 2)

    Ni2+

  • Option 3)

    Mn2+

  • Option 4)

    Zn2+

     

 

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S solutionqc
Answered 2 days, 23 hours ago
Option 1) Co2+ Option 2) Ni2+ Option 3) Mn2+ Option 4) Zn2+  
Engineering
3 days, 23 hours ago

 The number of S=O and S−OH bonds present in peroxodisulphuric acid and pyrosulphuric acid respectively are :

  • Option 1)

     (2 and 2) and (2 and 2)

  • Option 2)

     (2 and 4) and (2 and 4)

  • Option 3)

     (4 and 2) and (2 and 4)

  • Option 4)

     (4 and 2) and (4 and 2)

     

 

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S solutionqc
Answered 2 days, 23 hours ago
Option 1)  (2 and 2) and (2 and 2) Option 2)  (2 and 4) and (2 and 4) Option 3)  (4 and 2) and (2 and 4) Option 4)  (4 and 2) and (4 and 2)  
Engineering
3 days, 23 hours ago

A metal ‘M’ reacts with nitrogen gas to afford ‘M3N’. ‘M3N’ on heating at high temperature gives back ‘M’ and on reaction with water produces a gas ‘B’.  Gas ‘B’ reacts with an aqueous solution of CuSO4 to form a deep blue compound.  ‘M’ and ‘B’ respectively are :

  • Option 1)

     Li and NH3

  • Option 2)

     Ba and N2

  • Option 3)

    Na and NH3

  • Option 4)

    Al and N2

     

 

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S solutionqc
Answered 2 days, 23 hours ago
Option 1)  Li and NH3 Option 2)  Ba and N2 Option 3) Na and NH3 Option 4) Al and N2  
Engineering
3 days, 23 hours ago

Consider the following standard electrode potentials (E0 in volts) in aqueous solution :

Based on these data, which of the following statements is correct ?

  • Option 1)

    Tl+ is more stable than Al3+

  • Option 2)

    Al+ is more stable than Al3+

  • Option 3)

     Tl+ is more stable than Al+

  • Option 4)

    Tl3+ is more stable than Al3+

     

 

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S solutionqc
Answered 2 days, 23 hours ago
Option 1) Tl+ is more stable than Al3+ Option 2) Al+ is more stable than Al3+ Option 3)  Tl+ is more stable than Al+ Option 4) Tl3+ is more stable than Al3+  
Engineering
3 days, 23 hours ago

 Consider the following ionization enthalpies of two elements ‘A’ and ‘B’.

Which of the following statements is correct ?

 

  • Option 1)

     Both ‘A’ and ‘B’ belong to group-1 where ‘B’ comes below ‘A’.

  • Option 2)

    Both ‘A’ and ‘B’ belong to group-1 where ‘A’ comes below ‘B’.

  • Option 3)

     Both ‘A’ and ‘B’ belong to group-2 where ‘B’ comes below ‘A’.

  • Option 4)

    Both ‘A’ and ‘B’ belong to group-2 where ‘A’ comes below ‘B’.

     

 

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S solutionqc
Answered 2 days, 23 hours ago
Option 1)  Both ‘A’ and ‘B’ belong to group-1 where ‘B’ comes below ‘A’. Option 2) Both ‘A’ and ‘B’ belong to group-1 where ‘A’ comes below ‘B’. Option 3)  Both ‘A’ and ‘B’ belong to group-2 where ‘B’ comes below ‘A’. Option 4) Both ‘A’ and ‘B’ belong to group-2 where ‘A’ comes below ‘B’.  
Engineering
3 days, 23 hours ago

 In which of the following reactions, hydrogen peroxide acts as an oxidizing agent ?

  • Option 1)

     HOCl + H2O2 → H3O+ + Cl + O2

  • Option 2)

    I2 + H2O2 + 2OH → 2I + 2H2O+O2

  • Option 3)

    2MnO-4 +3H2O2 →2MnO2 + 3O2+2H2O+2OH-  

  • Option 4)

     PbS+4H2O2 → PbSO4+4H2O

 

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S solutionqc
Answered 2 days, 23 hours ago
Option 1)  HOCl + H2O2 → H3O+ + Cl− + O2 Option 2) I2 + H2O2 + 2OH− → 2I− + 2H2O+O2 Option 3) 2MnO-4 +3H2O2 →2MnO2 + 3O2+2H2O+2OH-   Option 4)  PbS+4H2O2 → PbSO4+4H2O
Engineering
3 days, 23 hours ago

 Identify the pollutant gases largely responsible for the discoloured and lustreless nature of marble of the Taj Mahal.

  • Option 1)

     O3 and CO2

  • Option 2)

     CO2 and NO2

  • Option 3)

    SO2 and NO2

  • Option 4)

    SO2 and O3

     

 

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S solutionqc
Answered 2 days, 23 hours ago
Option 1)  O3 and CO2 Option 2)  CO2 and NO2 Option 3) SO2 and NO2 Option 4) SO2 and O3  
Engineering
3 days, 23 hours ago

 sp3d2 hybridization is not displayed by :

  • Option 1)

     BrF5

  • Option 2)

     SF6

  • Option 3)

    [CrF6]3−

  • Option 4)

     PF5

     

 

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S solutionqc
Answered 2 days, 23 hours ago
Option 1)  BrF5 Option 2)  SF6 Option 3) [CrF6]3− Option 4)  PF5  
Engineering
3 days, 23 hours ago

The pair of compounds having metals in their highest oxidation state is :

  • Option 1)

        MnO2 and CrO2Cl2

  • Option 2)

     [NiCl4]2− and [CoCl4]2−

  • Option 3)

     [Fe(CN)6]3− and [Cu(CN)4]2−

  • Option 4)

    [FeCl4] and Co2O3

     

 

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S solutionqc
Answered 2 days, 23 hours ago
Option 1)     MnO2 and CrO2Cl2 Option 2)  [NiCl4]2− and [CoCl4]2− Option 3)  [Fe(CN)6]3− and [Cu(CN)4]2− Option 4) [FeCl4]− and Co2O3  
Engineering
3 days, 23 hours ago

Which of the following is paramagnetic ?

  • Option 1)

    NO+

  • Option 2)

     CO

     

  • Option 3)

     O _{2}^{2-}

  • Option 4)

    B2

 

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S SudhirSol
Answered 2 days, 23 hours ago
Option 1) NO+ Option 2)  CO   Option 3)   Option 4) B2
Engineering
3 days, 23 hours ago

The rate of a reaction A doubles on increasing the temperature from 300 to 310 K.  By how much, the temperature of reaction B should be increased from 300 K so that rate doubles if activation energy of the reaction B is twice to that of reaction A.

  • Option 1)

    9.84 K

  • Option 2)

     4.92 K

  • Option 3)

     2.45 K

  • Option 4)

    19.67 K

     

 

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S SudhirSol
Answered 2 days, 23 hours ago
Option 1) 9.84 K Option 2)  4.92 K Option 3)  2.45 K Option 4) 19.67 K  
Medical
5 days, 5 hours ago
Screenshot_729.png


In a diffraction pattern due to a single slit of width 'a', the first minimum is observed at an angle 30° when light of wavelength 5000{\text \AA}  is incident on the slit. The first secondary maximum is observed at an angle of:

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S safeer
Answered 5 days, 4 hours ago
For first minima;  since  For  secondary maxima
Medical
1 week, 4 days ago

Which one of the following pairs of structures is correctly matched with their correct description

  • Option 1)

    1

  • Option 2)

    2

  • Option 3)

    3

  • Option 4)

    4

 

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K kashimalla sravankumar
Answered 5 days, 5 hours ago

4

 

Medical
1 week, 4 days ago

Fastest distribution of some injectible material / medicine and with no risk of any kind can be achieved by injecting it into the

  • Option 1)

    arteries

  • Option 2)

    veins

  • Option 3)

    lymph vessels

  • Option 4)

    muscles

 

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S solutionqc
Answered 1 week, 3 days ago
Option 1) arteries Option 2) veins Option 3) lymph vessels Option 4) muscles
Medical
1 week, 4 days ago

Identify the components labelled A, B, C and D in the diagram below from the list (i) to (viii) given along with 

Components : (i) Cristae of mitochondria (ii) Inner membrane of mitochondria (iii) Cytoplasm (iv) Smooth endoplasmic reticulum (v) Rough endoplasmic reticulum (vi) Mitochondrial matrix (vii) Cell vacuole (viii) Nucleus The correct components are

  • Option 1)

    A - (i) , B-(iv) , C-(viii) , D-(vi)

  • Option 2)

    A-(vi), B-(v),C-(iv), D-(vii)

  • Option 3)

    A-(v), B-(i), C-(iii), D-(ii)

  • Option 4)

    A-(v), B-(iv) ,C-(viii), D-(iii)

 

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S solutionqc
Answered 1 week, 3 days ago
Option 1) A - (i) , B-(iv) , C-(viii) , D-(vi) Option 2) A-(vi), B-(v),C-(iv), D-(vii) Option 3) A-(v), B-(i), C-(iii), D-(ii) Option 4) A-(v), B-(iv) ,C-(viii), D-(iii)
Engineering
1 week, 4 days ago

For current entering at A, the electric field at a distance ‘r’ from A is

  • Option 1)

    \frac{\rho l}{8\pi r^2}

  • Option 2)

    \frac{\rho l}{ r^2}

  • Option 3)

    \frac{\rho l}{2\pi r^2}

  • Option 4)

    \frac{\rho l}{4\pi r^2}

 

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S solutionqc
Answered 1 week, 3 days ago
Option 1) Option 2) Option 3) Option 4)
Engineering
1 week, 4 days ago

A student measures the focal length of convex lens by putting an object pin at a distance ‘u’ from the
lens and measuring the distance ‘v’ of the image pin. The graph between ‘u’ and ‘v’ plotted by the
student should look like

  • Option 1)

  • Option 2)

  • Option 3)

  • Option 4)

 

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S SANDEEP KUMAR
Answered 1 week, 2 days ago

4

Engineering
1 week, 4 days ago

The quadratic equations x2 - 6x + a = 0  and x- cx + 6 = 0  have one root in common. The other roots
of the first and second equations are integers in the ratio 4 : 3. Then the common root is

  • Option 1)

    1

  • Option 2)

    4

  • Option 3)

    3

  • Option 4)

    2

 

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C chaudhari vipul
Answered 1 week, 1 day ago

option3

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