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. Which of the following is true of gamma (γ) rays? Theytravel at very low speedhave no ionizing powerare neutralare negatively chargedare positively charged2. Substance Q reacts with cold water to form a solution which turns red litmus blue?Substance Q could bePhosphorusNitrogenSulphurCalcium3. What is the composition of soap?Sodium salt with fatty acids.Both a & bPotassium salt with fatty acidsSodium and Potassium salt mixed with chemicals4. A finely divided form of a metal burns more readily in air than the rod form because the rod hasDifferent chemical propertiesSmaller surface areaHigher molar massProtecting oxide coating5. Natural rubber is a ________ which is having high elasticity.MaterialElastomerSubstanceChemical using carbon as main compound6. The rate of production of hydrogen gas from the reaction between zinc granules and hydrochloric acid can be increased byUsing zinc powder instead of granulesCarrying out the reaction at a higher pressureUsing zinc rod instead of zinc granulesCooling the reaction mixture7. Metallic elements that give coloured salts in aqueous solutions are called........... metalsf-blockalkalis-blockalkaline-earthd-block8. The following oxides reacts with both acids and bases to form salts exceptZinc oxideLead (ii) oxidetin (iv) oxidecarbon (iv) oxide9. What current in amperes will deposit 2.7g of aluminium in 2 hours?[Al = 27, 1F = 96500C]1628432810. Allotropes of an element differ in their?physical propertymass numberchemical propertyelectronic configuration11. Sulphur burns in air to form?Basic oxideNeutral oxideAmphoteric oxideAcidic oxide12. Trioxonitrate(v) acid is not used for preparing hydrogen gas from metals because itRenders the metal passiveForms a layer of oxide on the metalIs strongly oxidisingIs volatile13. Where the Bio-chemical compounds are used?All of the aboveFood preservativesSkin TreatmentsCooking Oils14. The function of hydrogen in the reaction represented below is?CuO(s) + H2(g) → Cu(S) + H2O(g)CatalystAll of the aboveReducing agentOxidizing agentPrecipitating agent15. The green house effect is a climatic condition associated with the presence of excessAmmoniaCarbon(ii)oxideCarbon(iv)oxideHydrogen sulphide16. Which of the following is not an isotope of hydrogen?protiumprotontritiumdeuterium17. The electrolyte used in lead accumulator cell isManganese(iv)oxideAmmonium chloride pasteTetraoxosulphate(vi) acid solutionAmmonium chloride solution18. Which of the following halogens is the most reactive?BrIClAsF19. A catalyst which increases the rate of a chemical reaction does so by?Decreasing the activation energy of the reactionIncreasing the reaction pathwayIncreasing the pressure on the systemIncreasing the surface area of the reaction20. If two metallic ions of the same concentration migrate to a graphite cathode, the one that would be preferentially discharged, is the one that hasLower electrical chargeSmaller massStronger tendency to accept electronsGreater stability in solutionYou've successfully completed your test. Submit below.