Class 9 Science FA1admin2021-08-25T22:09:25+05:30Welcome to your Class 9 Test Name Class 1. If the displacement of an object is proportional to square of time, then the object moves with:Uniform velocityUniform accelerationIncreasing accelerationDecreasing acceleration2. From the given v-t graph, it can be inferred that the object is At restIn uniform motionMoving with uniform accelerationIn non-uniform motion3. Suppose a boy is enjoying a ride on a marry-go-round which is moving with a constant speed of 10 m/s. It implies that the boy is:At restMoving with no accelerationIn accelerated motionMoving with uniform velocity4. A particle is moving in a circular path of radius r. The displacement after half a circle would be:Zeroπr2r2πr5. The correct procedure of heating iron-sulphur mixture to prepare iron sulphide is:Heat the powder mixture at the base of the test tube using a blue flame throughout.Heat the iron filings and sulphur mixture in the middle of the test tube using yellow flame throughout.Heat the powder mixture at the top of the test tube using an orange flame throughout.Heat the iron filings-sulphur mixture at 3/4 quarters of the test tube using a red flame throughout.6. When water at 0°C freezes to form ice at the same temperature of 0°C, then it:Absorbs some heatReleases some heatNeither absorbs nor releases heatAbsorbs exactly 3.34 x 105J/kg of heat7. When heat is constantly supplied by a burner to boiling water, then the temperature of water during vaporisation :Rises very slowlyRises rapidly until steam is producedFirst rises and then becomes constantDoes not rise at all8. Which of the following is not a function of the vacuole in plantsThey store toxic metabolic wastesThey help with the process of cell divisionThey help to maintain turgidityThey provide structurally supportNone of the above9. Where are the essential proteins and lipids required for cell membrane, manufactured?LysosomeChromosomesEndoplasmic reticulumMitochondriaNone of the above10. The process by which water moves through a semi-permeable membrane from a region of high concentration to a region of lower concentration, thereby equalizing water concentration is called:EvaporationDiffusionOsmosisAll of the aboveNone of the above11 out of 10
