General Science Practice Question and Answer
8 Q: Which cell has double outer membrane?
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5ee83d6b109b5d6e015de29d- 1Asteroidfalse
- 2Lions workfalse
- 3Haritalvaktrue
- 4Ribosomefalse
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Answer : 3. "Haritalvak"
Q: Which one of the following organisms has a role in converting nitrates to free nitrogen?
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5ef585b0f2ebd073795f236b- 1Pseudomonasfalse
- 2Nitrosomonasfalse
- 3Nitrobacterfalse
- 4Rhizobiumtrue
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Answer : 4. "Rhizobium"
Explanation :
Nitrates are reduced back into nitrogen in the soil by a process called denitrification. This process is performed by bacteria like Pseudomonas denitrificans, etc.
Q: kilohertz is a unit which measures
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5edeffe08c4c964f73d39618- 1power used by a current of one amperefalse
- 2electromagnetic radio wave frequenciestrue
- 3voltagefalse
- 4electric resistancefalse
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Answer : 2. "electromagnetic radio wave frequencies"
Q: One fathom is equal to
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5edeff6eca41b347ed2f4ed9- 16 metersfalse
- 26 feettrue
- 360 feetfalse
- 4100 cmfalse
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Answer : 2. "6 feet"
Q: is a scalar?
2649 060b4bf8dc6545e40751526af
60b4bf8dc6545e40751526af- 1Force momentfalse
- 2energytrue
- 3momentumfalse
- 4All thesefalse
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Answer : 2. "energy"
Q: What is the unit of measurement of ampere?
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60b4bea07cb636175d3d2475- 1Currenttrue
- 2resistancefalse
- 3Powerfalse
- 4voltagefalse
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Answer : 1. "Current"
Q: Why it is not advisable to sleep under a tree at night?
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5ef432e8d40ebf3f78335a80- 1Release of less oxygenfalse
- 2Release of more oxygenfalse
- 3Release of carbon dioxidetrue
- 4Release of carbon monoxidefalse
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Answer : 3. "Release of carbon dioxide"
Explanation :
Sleeping under a tree is not advisable at night, since photosynthesis does not occur, oxygen is not being produced by the trees. In addition to this, the trees continue respiring thereby causing the amount of carbon dioxide to be increased and the amount of oxygen to be reduced.
Q: Which of the following hitting methods has the highest power factor?
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5ef417b67c1ec61320b5a6c6- 1heating resistancetrue
- 2induction heatingfalse
- 3Arc heatingfalse
- 4Dielectric heatingfalse
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Answer : 1. "heating resistance"
Explanation :
The correct answer is Resistance Heating. Resistance heating is based on the I2R effect and is highly resistive in nature that's why it has the maximum power factor. Electric resistance heating is defined as “the heat produced by passing an electric current through a material that preferably has high resistance”.