Practice Question and Answer
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5f869f6de5230d620733971c Answer : 1. "
4 Q:
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Q: Mechanical Energy is:
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5f86a4cdb7ad805e26c17e96- 1The energy release during mechanical work.false
- 2The sum of kinetic energy and the potential energy of an object.true
- 3Equal to the rate of doing work.false
- 4The Energy absorbed during movement of a body.false
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Answer : 2. "The sum of kinetic energy and the potential energy of an object. "
Q: Which of the following is not easily oxidized at high temperature?
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5f86a3f4dcf12a01a141541a- 1Insulatorfalse
- 2Alloytrue
- 3Semi-conductorfalse
- 4conductorfalse
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Answer : 2. "Alloy"
Q: A 1 kg object is dropped from a height of 30 meters to the ground. The work done by the force of gravity will be
1664 05f86a39bb7ad805e26c16cb0
5f86a39bb7ad805e26c16cb0- 130 Jfalse
- 210 Jfalse
- 30.33 Jfalse
- 4300 Jtrue
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Answer : 4. "300 J"
Q: The product of force and displacement is called—
1781 05f86a302b7ad805e26c163d8
5f86a302b7ad805e26c163d8- 1Accelerationfalse
- 2Worktrue
- 3Momentumfalse
- 4Weightfalse
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Answer : 2. "Work"
Q: The melting point of tungsten is____.
2316 05f86a2598a599d39499a8013
5f86a2598a599d39499a8013- 13,083 ° Cfalse
- 23,830 ° Cfalse
- 33,380 ° Ctrue
- 43,308 ° Cfalse
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Answer : 3. "3,380 ° C"
Q: Who proposed the word 'molecule'?
1671 05f869f7ce5230d6207339745
5f869f7ce5230d6207339745- 1E. Rutherfordfalse
- 2J.J. Thomsonfalse
- 3Democritustrue
- 4John Doltonfalse
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Answer : 3. "Democritus"
Q: Question Figure
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5f869f6de5230d620733971c- 1true
- 2false
- 3false
- 4false
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Answer : 1. "
"
Q: Which of the following is not correct about diffusion?
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5f869edfb7ad805e26c102b6- 1The rate of diffusion of gases is higher than that of solid and liquid.false
- 2Diffusion is possible only when the particles of matter are in constant motion.false
- 3The rate of diffusion of gases depends on their volume.true
- 4Particles in diffusion move from high concentration to low concentration.false
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Answer : 3. "The rate of diffusion of gases depends on their volume."
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