Questions asked by Reyan Roberth

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• Factorise the following using completing square method?
  
• What happens during the incomplete oxidation of alcohol?
  
• How to convert alcohols to ketone?
  
• Represent all the trigonometric ratios as positive and negative in the 4 quadrants?
  
• Balance by partial equation method :- Cu+HNO3=Cu(NO3)2+N2O+H2O?
  
• K2Cr2O7 + H2SO4 + SO2 = K2SO4 + Cr2(SO4)3 + H2O balance by partial equation method??
  
• If P+Q=R and if Q is doubled and R is doubled then find Q? Note. P ,Q And R are vectors each
  
• A compound containing Na, S, H, and O where, Na =14.28 %, S = 9.92%, H = 6.2% and the rest are O. The molecular mass of the compound is 322. Calculate the molecular formula of compound considering all H atoms are present as water of crystallization?
  
• What is the equivalent mass of kmno4 in 2kmno4+16hcl=2kcl+2mncl2+8h2o+5cl2?
  
• 0.796 gm of metal oxide when heated with current of dry H2 , 0.18 gm of H2O was found.he equivalent mass of metal?
  
• 4.74 gm of CuO when heated with current of H2 gave 3.78 gm of metal.Find the Equivalent mass of Cu?
  
• If #|A+B| / |A-B|=1# what is the value of A.B and A X B??
  
• Is the universe in motion or it is at rest??
  
• Physics :- Motion in a straight line ....... HELP?
  
• If # alpha +beta -gamma =pi# Prove that #(sin^2alpha + sin^2beta - sin^2gamma)=#2sin alpha ×2sin beta ×2 cos gamma#?
  
• An object moves 1m in a straight line displacement a and changes direction moves another 1m in straight line displacement b and then ends up 1m from the starting point. Through which angle did it turn? Find the magnitude of a-b
  
• A car is driven east for a distance of 40km the north for 30km and then in a direction 30° east of north got 25km. Determine the magnitude and the angle of the total displacement from its starting point.?
  
• Determine the formula of A. Molarity B. Molality C. Mole fraction D. Normality ?
  
• Dimensional analysis doubt!!!??