[Q.1] Nidhi pushed the plunger of syringe completely and dipped its needle in water. Then she slowly pulled the plunger while its needle was still immersed in water. Select the correct statement regarding this. [A] Water will move in the syringe when she pushed the plunger down due to air pressure [B] When she pushed the plunger down all the air moved out creating an empty space in syringe [C] Air outside the syringe exerted pressure on water causing it to move in when the plunger is pulled up [D] Both (B) and (C)
[Q.2] Select the method that prevents soil erosion by water. [A] Terrace farming [B] Windbreaks [C] Embankments [D] Both (A) and (C)
[Q.3] Tides are caused by ______________. [A] Gravitational pull of Earth [B] Gravitational pull of Mars [C] Gravitational pull of Moon [D] Both (B) and (C)
[Q.4] What is the main reason that some places on the Earth are warmer than others ? [A] The sun stays above the horizon 24 hours a day in some places [B] The rays of the sun are more direct at some places and more slanting at others [C] Some places experience warm seasons because of underground heat [D] None of these
[Q.5] Which of the following statements is true ? [A] Frictional force is a non-contact force [B] Magnetic force can be attractive or repulsive [C] Mechanical force is a contact force [D] Both (B) and (C)
[Q.6] The given diagram shows a hill with four labelled positions W, X, Y and Z. When a ball is rolled down the hill, then the greatest speed of the ball will be at [A] Position W [B] Position X [C] Position Y [D] Position Z
[Q.7] Most accurate instrument used for measuring time is [A] sundial [B] water clock [C] digital clock [D] pendulum
[Q.8] Length : Metre :: Mass : kilogram :: Time : Second :: ? [A] Temperature : Celsius [B] Temperature : Kelvin [C] Temperature : fahrenheit [D] All of these
[Q.9] In the activity shown in the picture, _____energy is being converted into ______ energy. [A] Potential, Kinetic [B] Sound, Kinetic [C] Muscular, Kinetic [D] Solar, Potential
[Q.10] The diagram below shows the path taken by a ball when Sundram kicks it. The potential energy of the ball is highest at _______ [A] P [B] Q [C] R [D] S
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