[₫11{pi" 6.354i,"Delta ODC sim Delta OBA,/_BOC=125^(@)247],[/_CDO=70^(@)Sl4," all "/_DOC,/_DCO" utt "/_OAB]

In the figure given below, Delta ODC - Delta OBA , /_ BOC = 125^(@) and /_ CDO = 70^(@) . Find /_ DOC , /_ DCO and /_ OAB

In the given figure DeltaODC ~ DeltaOBA, /_BOC= 125^(@)" and "/_CDO= 70^(@) . Find /_DOC, /_DCO" and "/_OAB .

In the given figure Delta ODC ~ Delta OAB , /_BOC= 125^@, /_ODC = 70^@ , then /_OAB is equal to :

If Fig. ODC ~=Delta OBA , |__ul(BOC)= 125^(@) and |__ul(CDO)= 70^(@) . Find |__ul(DOC), |__ul(OAB) .

In the given figure, Delta ODC~ Delta OBA, angle BOC =115^(@) and angle COD =70^(@) Find (i) angle DOC (ii) angle DCO (iii) angle OAB (iv) angle OBA

In Fig. 6.35, triangleODC~triangleOBA,angleBOC=125^@ and angle CDO=70^@ Find angle DOC,angle DCO,and angle OAB .

In the given figure, Delta OAB~ Delta OCD . If AB=8 cm, BO= 6.4 cm, OC=3.5 cm and CD=5 cm find (i) OA (ii) DO.

Which of the following statements are correct? Fuel cells are galvanic cells in which the chemical energy of fuel is directly converted into electrical energy. Type of fuel cell is a hydrogen - oxygen fuel cell. It consists of two electrodes made up of two porous graphite impregnated with a catalyst (platinum, silver, or metal oxide). The electrodes are placed in aqueous solution of NaOH. Oxygen nad hydrogen are continuously fed into the cell. Hydrogen gets oxidized to H^(oplus) which is neutralized by overset(Θ)(OH) , ie., anodic reaction. H_(2) hArr 2H^(oplus) + 2e^(-) 2H^(oplus) + 2 overset(Θ)(OH) hArr 2H_(2)O H_(2) + 2 overset(Θ)(OH) hArr 2H_(2)O + 2e^(-) At cathode, O_(2) gets reduced to overset(Θ)(OH) i.e., O_(2) + 2H_(2)O + 4e^(-) hArr overset(Θ)(4)OH Hence, the net reaction is 2H_(2) + O_(2) hArr 2H_(2)O The overall reaction has Delta H= -285.6kJ mol^(-1) and Delta G= -237.4kJ mol^(-1) " at " 25^(@)C A fuel cell is I. A voltaic cell in which continuous supply of fuels are sent at anode to perform oxidation II. A voltaic cell in which fuels such as CH_(4), H_(2) and CO are used up at anode. III. One which involves the reaction of H_(2)- O_(2) fuel cell such as: Anode 2H_(2) + 4 overset(Θ)(OH) rarr 4H_(2)O(I) + 4e^(-) cathode : O+ 2H_(2)O(I) + 4e^(-) rarr 4 overset(Θ)(OH) IV. The efficiency of H_(2)-O_(2) fuel cell is 70 to 75%

Consider the following statements. I. In Delta ABC , if c=6 and cos C= (-11)/(25) then, R= (25)/(2sqrt(14)) II. In Delta ABC if a = 3 , b= 4 , c=6 , then ABC is acute angled triangle Which of the above statements is / are true ?