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the heats of combustion of C2H4 , C2H6 AND H2 are -1400.5Kj,-1558.3kj and -286.5kj. the heat of hydrogenation of ethene is.. pleaz solve lucidly ...
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the mean lives of a radioactive substance are 1620yrs for alpha emission and 405yrs for beta emission respectively. find out the time during which three-fourth of the sample will decay if it is decaying both by alpha emission ...
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*Image* Using KIRCHOFFS laws calculate the PD across 8Ω resistor ...
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*Image* what is the current flowing in G? PD across 5F capacitor.... PD across 4F capacitor... ...
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*Image* the cell is ideal. what is th PD across the capacitor?? pleaxe xplain. ...
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is wurtz reaction possible with tertiary alkyl halides?? please explain ...
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how does the drift velocity of electrons in a metallic conductor change if the length of the conductor is doubled by stretching it. PD is kept constant explain ...
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find the range of y y=1/|sinx| +1/|cosx| ...
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*Image* A rigid container is filled with 5g of a substance of molecular wt. 50. the subtance is heated ..... What are the latent heat of fusion and evaporation? what are the Average molar specific heat of the substance in sol ...
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*Image* a mass of 8g of oxygen at the pressure one atmosphere and at temp. 27°C is enclosed in a cylinder fitted with a frictionless piston.the following operations are performsd: I-the gas is heated at constant pressure to ...
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*Image* plz explain two moles of an ideal diatomic gas is heated in the process shown in figure what is the heat given to the gas?? what is the work done by the gas?? ...
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in a triangle the incircle touches the sides BC,CA&AB at D,E&F respectively.If the radius of the incircle is 4 units and BD,CE,&AF are in AP with common difference 1,the what is the area of the triangle ABC????plzzz explain.. ...
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*Image* WHAT IS THE ORDER OF BASICITY.... GIVE REASON PLZ... ...
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find the centre and the radius of the smaller of the two circles that touch the parabola 75y2=64(5x-3) at (6/5,8/5) and the x-axis plzzzz explain ...
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*Image* pulleys and strings are massless and there is no friction.find the relation for accelerations between hanging plank marked 1 and block marked 2. plz explain ...
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*Image* coeff of friction between any two blocks is 1/2. what is the max value of D such dat blocks move xithout slipping..... assume friction is there with surface ...
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*Image* the coeff of friction between the wedge of mass M and block of mass m is u.find the magnitude of force (F) reqiured to keep the block stationary wrt wedge.plz expln.... ...
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plzzz explain me the answer of Q30 and Q31 from SHM in HC Verma ...
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*Image* What is the IUPAC name ?? ...
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how many ml of 0.1M HCL are required to rct comp with 1gm mixture of Na2CO3 and NaHCO3 containing equimolar solutions of both?? PLZ explain ...
