*CHEMISTRY TRIAL QUESTIONS* 1) cassiterite is an ore of A) tin B) lead C) copper...

CHEMISTRY TRIAL QUESTIONS 1) cassiterite is an ore of A) tin B) lead C) copper...

*CHEMISTRY TRIAL QUESTIONS* 1) cassiterite is an ore of A) tin B) lead C) copper D) zinc 2)The bleaching agent used in textile and paper industry is A) Na₂SO₄ B) KOH C) NaCl D) NaOCl 3) The solution that gives a white precipitate with acidified BaCl₂ solution and a green color to flame test A) (NH₄)₂SO₄ B) CaCl C) CuSO₄ D) CaSO₄ 4) ore of lead ----------- Ans 👉🏽👉🏽 *Galena* 5) The balancing of chemical equations is based on the law of A) conservation of energy B) conservation of mass C) definite proportion D) multiple proportion 6) what volume of oxygen will react at stp with carbon to form 13.2g of CO₂ in the reaction represented 👇👇👇 C. . O₂. ------->. CO₂ A) 2.24dm-³ B) 4.40dm-³ C) 4.48dm-³ D) 6.72dm-³ 7) The minimum amount of energy that colliding molecules must possess for thier collisions to be effective is A) thermal energy B) collision energy C) activation energy D) kinetic energy 8)A liquid that is neutral to litmus but gives a colourless gas with metallic sodium is A) alkene B) alkane C) alkanoate D) alkanols 9)The compound widely used in the production of perfumes A) alkanoates B) alkanone C) sugars D) alkenes 10) calculate the mass of K₂CO₃ In 250cm³ of 0.100moldm-³ solution A) 1.85g B) 2.50g C) 3.45g D) 4.30g 11) Heating a reducing sugar with Fehling's solution will lead to the production of a A) deep blue solution B). fruity odor C) brick- red precipitate D) black mass *Good luck with 300 score and above*?

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Asked by Temiloluwa on 2nd April, 2023