Basic Science Practice Question and Answer
8 Q: Which gas is used to purify pond water in cities?
1821 0601401905beea84b8ecebc42
601401905beea84b8ecebc42- 1Sulfur dioxidefalse
- 2Chlorinetrue
- 3Nitrogenfalse
- 4Ammoniafalse
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Answer : 2. "Chlorine"
Q: capacitor is a of small size but high capacity?
1821 15ef44ae3f2ebd073795bbd97
5ef44ae3f2ebd073795bbd97- 1mica capacitortrue
- 2electrolytic capacitorsfalse
- 3Sirasic capacitorfalse
- 4Paper capacitorfalse
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Answer : 1. "mica capacitor"
Q: Capacity when connecting capacitors to series?
1813 15ef44a6ed7fe817321989d68
5ef44a6ed7fe817321989d68- 1neither increases nor decreasesfalse
- 2increasestrue
- 3decreasesfalse
- 4None of the abovefalse
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Answer : 2. "increases"
Explanation :
A capacitor stores energy in the form of an electrostatic field between its plates. Increasing the size of the plates increases the capacitance because there is more room for the electrons to escape.
Q: Thermal conductivity of soil when moisture content in the soil increases?
1803 0604deaf7e147c16b2869c752
604deaf7e147c16b2869c752- 1will decreasefalse
- 2will increasetrue
- 3No changefalse
- 4None of thesefalse
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Answer : 2. "will increase"
Q: Electricity is generated when the drivers rotate between the magnetic fields?
1801 05ef44b332d6fc772f50b9337
5ef44b332d6fc772f50b9337- 1Movingtrue
- 2stablefalse
- 3Both static and dynamicfalse
- 4None of thesefalse
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Answer : 1. "Moving"
Explanation :
In a generator, a rotating magnetic field is used to produce electrical energy. When a conductor, such as a wire, moves through a magnetic field, a voltage is induced across the conductor. This is known as electromagnetic induction, and it is the fundamental principle behind how generators work.
Q: Potato canker has black canker and black pan / colloid factor?
1786 0604ddf1aa01bc447899e2174
604ddf1aa01bc447899e2174- 1two fungifalse
- 2A fungus and a bacteriumfalse
- 3a fungustrue
- 4A fungus and a virusfalse
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Answer : 3. "a fungus"
Q: When a man enters a dark room with light, he sees nothing for some time. Later he begins to appear, because?
1785 0601404df2a5c813e157f5cce
601404df2a5c813e157f5cce- 1The iris of his eye shrinkstrue
- 2The iris of his eye spreadsfalse
- 3The distance between the lens and retina of his eye increasesfalse
- 4The length of his eye lens increasesfalse
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Answer : 1. "The iris of his eye shrinks"
Q: Which of the following protocols is not correctly related to its issue?
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5f60453380a26b7dab000e70- 11987 Montreal Protocol - Ozone Depleting Substancesfalse
- 21979 Bone Conference - Conservation of Migratory Speciesfalse
- 31989 Basel Convention - Regulation of transboundary movement, transit, handling and use of living modified organismstrue
- 41998 Rotterdam Conference - Consent in the international trade of some hazardous chemicals and pesticidesfalse
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