General Science Practice Question and Answer
8 Q: X-rays are _________ waves.
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60a37046d3afc7379b0c26d5- 1Transversefalse
- 2Longitudinalfalse
- 3Elasticfalse
- 4Electromagnetictrue
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Answer : 4. "Electromagnetic "
Q: Which among the following is an example of solid sol?
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605d7e8047357f07e98e9ecd- 1Milk of magnesiafalse
- 2Foamfalse
- 3Coloured gemstonestrue
- 4Rubberfalse
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Answer : 3. "Coloured gemstones"
Q: Which of the following is not true about graphene?
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6073f6d4c61d5c2ec9407f85- 1Atomic lattice formfalse
- 2Honey Comb Structurefalse
- 3Ellotrope of carbonfalse
- 43-Dimensional Structuretrue
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Answer : 4. "3-Dimensional Structure"
Q: Which of the following creatures is oviparous?
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607e99c2c91527511d8e365f- 1Frogtrue
- 2Rabbitfalse
- 3Mousefalse
- 4Squirrelfalse
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Answer : 1. "Frog"
Q: When an object is placed in front of a concave mirror at its center of curvature, the image formed will be
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628b65aa44265e01a97fe4bb- 1real, inverted and smaller than objectfalse
- 2real, inverted and equal to the size of objecttrue
- 3virtual, erect and smaller than objectfalse
- 4virtual, erect and equal to the size of objectfalse
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Answer : 2. "real, inverted and equal to the size of object "
Q: Optical Fiber works on the principle of
1199 0606c4259556643278a769543
606c4259556643278a769543- 1Diffusionfalse
- 2Refractionfalse
- 3Total Internal Reflectiontrue
- 4Scatteringfalse
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Answer : 3. "Total Internal Reflection"
Q: Proton was discovered by______.
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6329b261751e5310a5bb4e16- 1James Chadwickfalse
- 2Ernest Rutherfordtrue
- 3J.J. Thomsonfalse
- 4Robert Andrew Cookfalse
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Answer : 2. "Ernest Rutherford "
Explanation :
1. The proton was discovered by Rutherford. The name proton is derived from the Greek word protos meaning 'first'. The proton is a positively charged particle located in the nucleus of an atom, which was discovered by Ernest Rutherford in 1920. Rutherford proved in 1917 that the nucleus of the hydrogen atom (ie a proton) is present in the nuclei of all other atoms.
2. The nucleus of the atom was discovered by Ernest Rutherford in his famous gold foil experiment in the year 1911. The value of the particle is 1.6*10-19 C. To make an atom neutral, it has the same number of protons and electrons. He used the same concept to discover the proton.
Q: ‘PCB’ stands for–
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651fcc49e1bf7bf087f49d70- 1Programme Control Blockfalse
- 2Process Control Blocktrue
- 3Process Communication Blockfalse
- 4None of the abovefalse
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Answer : 2. "Process Control Block "
Explanation :
Process Control Block (PCB, also called Task Controlling Block, Task Structure or Switchframe) is a data structure in the Operating System kernel containing the information needed to manage a particular process.The PCB is the manifestation of a process in an Operating System.