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  • 1 answers

Yogita Ingle 6 years, 10 months ago

Mendeleev’s Periodic law is based upon atomic weights of elements, whereas Modem Periodic Law is based upon atomic number of elements. Mendeleev stated : "The properties of the elements are a periodic function of their atomic weights."
Modern Periodic Law states : “The physical and chemical properties of the elements are periodic functions of their atomic numbers.”

  • 2 answers

Sakshi Sharma??️??️ 6 years, 10 months ago

Vijay A/c dr TO Bank A/c

Abhik Khare 6 years, 10 months ago

Cheque or BOE
  • 1 answers

Yogita Ingle 6 years, 10 months ago

Joint Ventures can be with a company of same industry or can be of some other industry, but with a combination of both, they will generate a competitive advantage over other players in the market.
Benefits of joint ventures are :
1.Reduces competition : When two companies join together, it results in reducing the competition as instead of wasting resources in competition they will strengthen their organisation.
2.Reduces risk : High risk involved in new and innovative ventures can be reduced when two companies join together to share the risk.
3.Advanced technology : By joining hands with foreign companies, Indian companies can get the benefit of advanced technology.
4.Large capital : In joint ventures, two companies together contribute capital. As a result, large capital can be arranged without much difficulty.
5.Reduction in cost: When two firms join together, they can operate on a large scale and get the benefit of economies of scale hence reduces cost of production and marketing.

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Saif Imam 6 years, 10 months ago

the reaction in which oxidation and reduction both takes place simultaneously is called redox reaction.
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Sakshi Sharma??️??️ 6 years, 10 months ago

PPC shows all the maximum possible combination of two goods , which can be produced with the available resources and technology. In such a case , more of one goods can be produced only by taking resources away from the production of another goods . As there exists an inverse relationship between change in quantity of one commodity and change in quantity of the other commodity , PPC slopes downward from left to right.
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Barinderjit Singh 6 years, 10 months ago

Eg gravitational force. The force whose work done dont depend upon path followed .
  • 3 answers

Sanidhya Jadaun? 6 years, 10 months ago

It can be radian for angle or radar for boats

Barinderjit Singh 6 years, 10 months ago

It might be radians(angle)

Ashish Choudhary 6 years, 10 months ago

Radian
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Sakshi Sharma??️??️ 6 years, 10 months ago

I think it's MR = AR not MR = TR
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Saif Imam 6 years, 10 months ago

It states that the total pressure exerted by the mixture of non reactive gases is equal to the sum of the partial pressure of individual gases. p(total)= P1+P2+P3+ - - - - - (at constant temperature and volume).

Adarsh Suresh 6 years, 10 months ago

Ans
  • 1 answers

Barinderjit Singh 6 years, 10 months ago

V=(GM÷r)^1/2
  • 2 answers

Anuj Maurya 6 years, 10 months ago

To know every phenomenon which are occuring in the universe.

Prakhar J 6 years, 10 months ago

Because you have taken science field......?????
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Sanidhya Jadaun? 6 years, 10 months ago

Thank u Gaurav for ur help

Gaurav Seth 6 years, 10 months ago

Nitration of benzene is an electrophilic substitution reaction. Presence of electron releasing group such as —CH3 activates the benzene nucleus towards electrophilic substitution while presence of electron withdrawing group such as —NO2 deactivates the benzene nucleus towards electrophilic substitution. Therefore, the ease of nitration decreases in the order
Toluene > benzene > m-dinitrobenzene
Thus, toluene will undergo nitration most easily.

  • 4 answers

Prakhar J 6 years, 10 months ago

√2 :1

Gaurav Seth 6 years, 10 months ago

By mistake.Ignore the answer.

Gaurav Seth 6 years, 10 months ago

 

 

Q. What is the value of Sin(31π/3)

= sin(31π/3)
= sin(10π+π/3)
= sin(π/3)
= √3/2 ( in quadrant 1 )

OR

Sin ( 31 x 180 / 3)
= sin ( 31 x 60) 
= sin(1860)
 = sin(5x360 - 60) 
=sin60 
=root3/2

Rajat Sharma 6 years, 10 months ago

Root 2 ratio 1
  • 2 answers

Sunny Yadav 6 years, 10 months ago

Root 3÷2

Gaurav Seth 6 years, 10 months ago

Q. What is the value of Sin(31π/3)

= sin(31π/3)
= sin(10π+π/3)
= sin(π/3)
= √3/2 ( in quadrant 1 )

OR

Sin ( 31 x 180 / 3)
= sin ( 31 x 60) 
= sin(1860)
 = sin(5x360 - 60) 
=sin60 
=root3/2

  • 1 answers

Gaurav Seth 6 years, 10 months ago

tatement: For the streamline flow of non-viscous and incompressible liquid, the sum of potential energy, kinetic energy and pressure energy is constant. 





Proof: 
 

Let us consider the ideal liquid of density ρ flowing through the pipe LM of varying cross-section.

Let P1 and P2 be the pressures at ends L and M and A1 and A2 be the areas of cross-sections at ends L and M respectively.

Let the liquid enter with velocity V1 and leave with velocity v2

Let A1 > A2

Now, by equation of continuity,

                      

Since, A1 > A2

Therefore, 

v2 > v1 and P> P2 

Let, m be the mass of liquid enetring at end L in time t. 

The liquid will cover a distance = v1

Therefore, the work done by pressure on the liquid at end L in time t is, 

W1 = Force  

      = P1A1v1t           ... (1) 

Since same mass m leaves the pipe at end M in same time t, in which liquid will cover the distance given by v2t.

Therefore, work done by liquid against the force due to pressure P1 is given by, 
 
        W2 = P2A2v2t        ... (2) 

Net ork done by pressure on the liquid in time t is, 

W = W1 - W2 

    =P1A1v1t  - P2A2v2t        ... (3) 

This work done on liquid by pressure increases it's kinetic energy and potential energy. 

Increase in K.E of liquid is, 


That is, 

 

 

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Gaurav Seth 6 years, 10 months ago

Consider one mole of an ideal gas enclosed in a cylinder fitted with the movable frictionless piston.

Let the gas be heated at constant volume.

On supplying dQ amount of heat, let the temperature of the gas increase by dT. 



 

By first law of thermodynamics, 

           dQ = dU + dW = dU + PdV 

    CpdT = Cx dT + RdT 

At a constant pressure, 

P.dV = R.dT 


 

where  CpCand R are in same units. 

Hence, proved. 

 

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Saif Imam 6 years, 10 months ago

because on reacted with water it gives a strong base. Na2CO3+H2O---> NaOH+H2O+CO2
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