14/10/2019 Tutor Test (Chemistry) 0Comments by Gate Academy Welcome to your Tutor Test (Chemistry) You have 10 minutes to complete the test of 20 questions. Instructions 1. Answer ALL Questions. 2. Make sure you are prepared before you start the test. 3. Make sure you have a steady internet connection. 4. Do not attempt to reload the test page once you begin. 5. Fill the text field below with your correct details before you begin Full Name Email Address 1. A catalyst which increases the rate of a chemical reaction does so by?Increasing the pressure on the systemIncreasing the surface area of the reactionDecreasing the activation energy of the reactionIncreasing the reaction pathway2. Which of the following is true of Ionisation energy?the higher the screening effect, the higher the ionization energyit increases down the groupit increases across the periodit is the energy due to electron gainit is unaffected by nuclear charge3. What current in amperes will deposit 2.7g of aluminium in 2 hours?[Al = 27, 1F = 96500C]288416324. The function of hydrogen in the reaction represented below is?CuO(s) + H2(g) → Cu(S) + H2O(g)Reducing agentPrecipitating agentCatalystAll of the aboveOxidizing agent5. The electrolyte used in lead accumulator cell isManganese(iv)oxideAmmonium chloride solutionTetraoxosulphate(vi) acid solutionAmmonium chloride paste6. Sulphur burns in air to form?Amphoteric OxideNeutral oxideBasic OxideAcidic oxide7. The rate of production of hydrogen gas from the reaction between zinc granules and hydrochloric acid can be increased byCooling the reaction mixtureUsing zinc rod instead of zinc granulesCarrying out the reaction at a higher pressureUsing zinc powder instead of granules8. A catalyst which increases the rate of a chemical reaction does so by?Increasing the surface area of the reactionIncreasing the reaction pathwayDecreasing the pressure on the systemIncreasing the activation complex of the systemDecreasing the activation energy of the reaction9. 15dm³ of a gas at s.t.p. in a tube was pressed by a piston whose pressure was increased to twice its original value at the same temperature. The volume of the gas in dm³ at this new pressure is10.0dm³7.5dm³12.0dm³30.0dm³5.0dm³10. Which of the following halogens is the most reactive?FIAsClBr11. Sulphur burns in air to form?Basic oxideAmphoteric oxideNeutral oxideAcidic oxide12. Which of the following substances decompose when an electric circuit is passed through it?dilute hydrochloric acidglucose solutiontetra chloromethanezinc rod13. Natural rubber is a ________ which is having high elasticity.SubstanceChemical using carbon as main compoundElastomerMaterial14. Chemistry is a branch of science which can be used for providing the services to mankind. Comment on the statement.May BeFalseStrongly notTrue15. Which of the following is NOT a halogen?astatinebromineiodinefluorinesilicon16. What is the pattern of the degree of electropositivity of elements in the periodic table?Decreases down a group and across periodIncreases across a periodRemains constant down a groupDecreases across a periodRemains constant across a period17. The following oxides react with both acids and bases to form salts exceptTin(iv)oxideZinc oxideLead(ii)oxideCarbon(iv)oxide18. Which of the following pairs of compounds will undergo addition reaction?ethyne and ethylethanoatebutyne and ethenebenzene and methaneethane and ethyneethanol and propanone19. An element Y has the electronic configuration 1s2 2s2 2p6 3s2 3p4 To what period does it belong to in the periodic table?453620. Which of these is not a property of a system that is in a state of chemical equilibrium?It must take place in a closed systemThe value of change in free energy is zeroIt is a reversible systemThe change in entropy is zeroYou've successfully completed your test. Submit below.
