Class 9 - Chemistry Set 2
FREE quick assessment test (20 Questions) by Improove. Plz visit www.improove.in
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1. Which of the following has same number of electrons (isoelectronic) ? *
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2. Number of statements according to Rutherford's
model is/are correct.
-> Atom is very small as compared to size of
nucleus.
; -> The model given by him looks like our solar
system.
; -> The term energy level was used by
Rutherford first time.
; -> Electrons revolve in a circular path.; *
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3. Which of these choice will not change the state of matter ? *
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4. Which among the following on shaking with water will not form a true solution? *
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5. The valency of silver in Argentous is *
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6. Calculate the mass of 5 moles of CO2. *
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7. The Nitrogen atom has 7 protons, so the number of neutrons in nitride ion will be represented as (X)2 + 3. If mass number of nitrogen is 14 then calculate the value of X ? *
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8. Chemically any mixture can be classified as *
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9. Liquids like ether and acetone are kept in cool places because *
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10. Separation technique of evaporation is applied when the solvent is ___ and the solute is _____ solid. *
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11. Which of these is not a mixture ? *
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12. Which of the following statements is not true about an atom? *
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13. The electrons present in the outermost shell are called *
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14. Dissolution of sugar in water supports the fact that : *
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15. Which of the following is not matter? *
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16. Choose the correct option : *
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17. Arun prepared 0.01% (by mass) solution of
sodium chloride. Which represents the correct
composition? *
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18. Which of the following is considered to be a pure substance? *
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19. Which of the following represents a polyatomic ion ? *
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20. Assertion : Centrifugation is used to separate
cream from milk. Reason : Cream and milk have different boiling
point so they separate one by one. *
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