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The edges of cutting tools such as knive...

The edges of cutting tools such as knives, blades, and axes are always sharpened before use. Give reason.

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ICSE-MODEL TEST PAPERS -Model Test Paper 2 (Section I)
  1. If the mass of a solid is 31.2 g, and if the initial and final volume ...

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  2. What are the two factors on which the torque applied on a body depends...

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  3. The edges of cutting tools such as knives, blades, and axes are always...

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  4. Differentiate between gravitational potential energy and elastic poten...

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  5. A car has 3000 J of energy. What will happen if the speed is doubled?

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  6. Define power. What is its Sl unit?

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  7. Arrange air, glass, and water in the ascending order of optical densit...

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  8. Consider a ray of light passing from one medium to another. If the ang...

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  9. Mark the correct light ray as it travels through different mediums.

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  10. An imaginary line passing through the pole and the centre of curvature...

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  11. Which spherical mirror is used as a reflector in street lamps to diver...

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  12. The change of state from liquid to gas that takes place at the surface...

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  13. How is anomalous expansion of water useful for aquatic animals?

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  14. State one application of thermal expansion of liquids.

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  15. What property of pyrex glass makes it suitable for cooking?

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  16. Observe the given figure and mark the following: compressions

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  17. Observe the given figure and mark the following: rarefactions

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  18. Observe the given figure and mark the following: one complete wav...

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  19. Which one would have a lower pitch: a small thinner string under tensi...

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  20. Write two differences between pitch and loudness.

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