Time: 2 hours   hypothesis (c) experiment (d) pattern Career prospects in chemistry includes all the following EXCEPT (a) Biochemistry (b) Quality control (c) Accounting (d) Metallurgy An apparatus in the laboratory in which the preparation of poisonous gases is done is called (a) distillation tank (b) Aspirator bottle (c) fume cupboard (d) bell jar ….  Read More

Annswer all the questions.  CHEMISTRY 1. Balance the following equations: (a) KClO3(s) → KCl(s) + O2(g) (b) ZnCO3(s) + HCl(aq) → ZnCl(aq) + H2O + CO2(g) 2. Balance the following equation: H2SO4 + Na2CO3 → Na2SO4 + H2O + CO2 Ca(OH)2 + CO2 → CaCO3 + H2O 3. State the following Chemical laws: A. Law ….  Read More

    CHEMISTRY Objective  Questions. A vessel contains 1.6 moles of oxygen gas. Calculate the number of molecules of the gas [Avogadro’s constant = 6. 023 x 1023]. a. 3.76 x1023 b. 9.64 x 1023 c. 19.30 x 1023 d. 12 x 1023 Which of the following compounds has the least relative molecular mass? [ ….  Read More

  Subject: Chemistry Examination Class SS1 Term: 3rd Term                     Questions  1. State the  law of Conservation of mass. b. Law of conservation of mass was formulated by Who? 2, Law of conservation of mass is sometimes referred to as_____________   3.In the process of a ….  Read More

    Class: SS1 subject: Chemistry Time: 2hours Instruction> Please answer all questions.