Science GK Practice Question and Answer
8 Q: From which source is the list of countries emitting carbon dioxide based on carbon dioxide emissions?
1936 05f60443d80a26b7dab000d1c
5f60443d80a26b7dab000d1c- 1Burning of fossil fuelsfalse
- 2Cement Industryfalse
- 3Both of the abovetrue
- 4None of thesefalse
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Answer : 3. "Both of the above"
Explanation :
This is a list of sovereign states and territories by carbon dioxide emissions due to certain forms of human activity, based on the EDGAR database created by European Commission and Netherlands Environmental Assessment Agency.
Q: Rust on iron?
1930 05f9101807793eb35d72c610c
5f9101807793eb35d72c610c- 1ferric oxidefalse
- 2Hydrated ferrous and ferric oxidefalse
- 3Alkali ferrous and ferric carbonatefalse
- 4Because of all of the abovetrue
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Answer : 4. "Because of all of the above"
Q: What type of waves are there in Radar?
1923 05f912f099e18f97b7040eacf
5f912f099e18f97b7040eacf- 1electric wavesfalse
- 2electromagnetic wavestrue
- 3Sound wavesfalse
- 4None of the abovefalse
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Answer : 2. "electromagnetic waves"
Q: capacitor is a of small size but high capacity?
1918 15ef44ae3f2ebd073795bbd97
5ef44ae3f2ebd073795bbd97- 1mica capacitortrue
- 2electrolytic capacitorsfalse
- 3Sirasic capacitorfalse
- 4Paper capacitorfalse
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Answer : 1. "mica capacitor"
Q: Which gas is used to purify pond water in cities?
1909 0601401905beea84b8ecebc42
601401905beea84b8ecebc42- 1Sulfur dioxidefalse
- 2Chlorinetrue
- 3Nitrogenfalse
- 4Ammoniafalse
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Answer : 2. "Chlorine"
Q: Thermal conductivity of soil when moisture content in the soil increases?
1896 0604deaf7e147c16b2869c752
604deaf7e147c16b2869c752- 1will decreasefalse
- 2will increasetrue
- 3No changefalse
- 4None of thesefalse
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Answer : 2. "will increase"
Q: Potato canker has black canker and black pan / colloid factor?
1891 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: Electricity is generated when the drivers rotate between the magnetic fields?
1881 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.

