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 decreases when a given mass of gas is compressed to half its initial volume?Frequency of collisionsAtomic radius of each particleAverage intermolecular distanceNumber of molecules present2. A measure of the degree of disorder in chemical system is known asEquilibriumFree energyEntropyEnthalpy3. Which of these is not a property of a system that is in a state of chemical equilibrium?The value of change in free energy is zeroIt must take place in a closed systemThe change in entropy is zeroIt is a reversible system4. p,q,r,s are metals in the same period in the periodic table but in periods 3,4,5,6 respectively. Which of them loses electrons least reactively?prsq5. Consider the reaction represented by the equation:H2(g) + I2(g) ↔ 2HI(g) ΔH = -ve Which of the following statements about the equation is correct?the addition of a catalyst will change the equilibrium positionthe removal of HI(g) formed will favour the backward reactionpressure will have no effect on the production of HI(g)increase in pressure will favour the forward reactionincrease in temperature will favour the forward reaction6. Which of the following is NOT a halogen?fluorineastatinebromineiodinesilicon7. Which of the following decreases when a given mass of gas is compressed to half its initial volume?Atomic radius of each particleFrequency of collisionsAverage intermolecular distanceNumber of molecules present8. CuSO4.5H2O can be obtained from an aqueous solution of copper(ii)tetraoxosulphate(vi) byUsing chromatographyPrecipitationCrystallizationEvaporation to dryness9. A finely divided form of a metal burns more readily in air than the rod form because the rod hasDifferent chemical propertiesHigher molar massProtecting oxide coatingSmaller surface area10. Which of the following statements is NOT correct about the compound represented below?COOH|COOHits b.p is higher than that of the corresponding alkaneit has a basicity of 4it is a di-carboxylic acidits name is ethanedioic acidit produces effervescence with saturated NaHCO3 solution11. What is toxicity?A process used in the manufacturing of detergentsA harmful effect of soaps and detergents required to measure the effectiveness.A chemical reactionA process used in the manufacturing of soaps12. Allotropes of an element differ in their?mass numberphysical propertychemical propertyelectronic configuration13. When hydrogen sulphide gas is passed through an acidified solution of potassium heptaoxo dichromate(vi), the orange colour changes to green. This is because thehydrogen sulphide is a good oxidizing agentchromium(vi) ion is oxidizedsulphide ion changes to sulphur atom+6 state of Cr is reduced to +3 state+3 state of Cr is oxidized to +6 state14. When ammonium chloride is dissolved in water in a test tube, the test tube feels cooler showing that?Ammonia gas is evolvedThe process is endothermicSublimation has occurredThe solution is unsaturated15. The green house effect is a climatic condition associated with the presence of excessAmmoniaCarbon (ii) oxideHydrogen sulphideCarbon (iv) oxide16. Lemon is a source of ................acidlacticcitricethanoicascorbicamino17. Sulphur burns in air to form?Neutral oxideAmphoteric OxideAcidic oxideBasic Oxide18. The Azimuthal quantum number which corresponds to the f-orbital is2130619. Example(s) of colloids include:I. emulsionsII. solsIII. FogIV. smokeI and II OnlyI, II and III OnlyIII and IV OnlyI, II, III and IVIV Only20. The condition for spontaneous reaction isΔS < 0ΔG > 0ΔG = 0ΔG < 0ΔH > 0You've successfully completed your test. Submit below.