General Science Practice Question and Answer
8 Q: Which organ is responsible for the removal of nitrogenous waste from the human body?
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5f17df2f582605560c6b5037- 1liverfalse
- 2kidneytrue
- 3Lungsfalse
- 4Pancreaticfalse
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Answer : 2. "kidney"
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: 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: 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: Which of the following is a vector quantity?
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60b4bee2f2c446136b8b88a6- 1Energyfalse
- 2temperaturefalse
- 3forcetrue
- 4speedfalse
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Answer : 3. "force"
Q: is a scalar?
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60b4bf8dc6545e40751526af- 1Force momentfalse
- 2energytrue
- 3momentumfalse
- 4All thesefalse
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Answer : 2. "energy"
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”.