Questions asked by Muna

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• A cylindical container 30cm in diameter holds approach approximately 30 litres of oil .How far does the oil level fall after 1 litre of oil has been used?.pls also explain how u got it its due on monday
  
• An isosceles triangle is such that each of the base angles is twice the vertical angle. Find the angles of the triangle?
  
• In a right angled triangle on of the acute angles is 20•(degrees) greater than the other. What are the angles of the triangle?
  
• A regular polygon has angles of size 150 degrees each. How many sides has the polygon?
  
• Four angles of a pentagon are equal and the fifth is 60 degrees. Find tne equal angles and show that two sides of the pentagon are parallel. Any ideas?
  
• How would u prove that a given colourless liquid is an acid?
  
• Sulphur(iv)oxide is described as an acid anhydride. Elaborate on this statement?
  
• Potassium is a double salt. Explain this statement using the chemical formula of the alum?
  
• The basicity of tetraoxosulphate(iv) acid is? Explain this statement with an equation showing the reaction between the acid and potassium trixonitrate(v)?
  
• Express 473.5629 in base 10 as a binary number?
  
• 3^2x+1 + 3^x+2= 12 Prove?
  
• The atomicity of one of the acids below is one? A. H2So4 B. H2Co3 C. H2C2O4 D. CH3COOH.
  
• All the salts below will be neutral to litmus paper when dissolved in water except? A. CuCl2 B. NaCl C. KCl D. Na2So4
  
• One of the compound below is called a refractory material? A. CaO B. CuO C. ZnO D. PbO
  
• The reaction between a liquid substance 'M' and sodium trioxocarbonate (IV) gives a gas which turns limewater milky. Therefore 'M' is? (a) H2SO4 (b) Na2SO4 (c) KL (d) NaOH
  
• Two forces whose resultant is 200N are perpendicular to each other. If one of them makes an angle of 60° with the resultant. Calculate it magnitude?