Basic Science Practice Question and Answer
8 Q: Which gas is used to purify pond water in cities?
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601401905beea84b8ecebc42- 1Sulfur dioxidefalse
- 2Chlorinetrue
- 3Nitrogenfalse
- 4Ammoniafalse
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Answer : 2. "Chlorine"
Q: Are secondary electrical devices?
1899 05ef448bd7c1ec61320b65029
5ef448bd7c1ec61320b65029- 1Depleting torquesfalse
- 2Containing torquefalse
- 3Damping torquefalse
- 4All thesetrue
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Answer : 4. "All these"
Q: Thermal conductivity of soil when moisture content in the soil increases?
1882 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?
1877 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?
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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: Select the odd from the following.
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5f8fecfb7793eb35d72718c3- 1J.L .Baird — Televisionfalse
- 2J. Parkinson — Penicillinfalse
- 3James Watt — Steam Enginetrue
- 4A. G. Bell — Telephonefalse
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Answer : 3. "James Watt — Steam Engine "
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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Answer : 3. "1989 Basel Convention - Regulation of transboundary movement, transit, handling and use of living modified organisms"
Q: The average salinity of sea water is
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5edefa608c4c964f73d37fc0- 12%false
- 23%false
- 33.5%true
- 42.5%false
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Answer : 3. "3.5%"
Explanation :
The average salinity of sea water is 3.5% or 35 parts per thousand. In other words, for every 1 litre of sea water there is 35 grams of dissolved salts (NaCl) .