General Science Practice Question and Answer
8 Q: Which of the following has a very strong aroma of the fruit?
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5ef97200d7fe817321a63486- 1Ethyl acetatetrue
- 2Methanolfalse
- 3Methyl chloridefalse
- 4Methanoic acidfalse
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Answer : 1. "Ethyl acetate"
Explanation :
This colorless liquid has a characteristic sweet smell (similar to pear drops) and is used in glues, nail polish removers, and in the decaffeination process of tea and coffee. Ethyl acetate is the ester of ethanol and acetic acid; it is manufactured on a large scale for use as a solvent.
Q: Which of the following nutrients do NOT provide energy for animals?
1082 05ee8894a79b5ea388bed44fc
5ee8894a79b5ea388bed44fc- 1Fatsfalse
- 2Carbohydratesfalse
- 3Vitaminstrue
- 4Proteinsfalse
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Answer : 3. "Vitamins "
Explanation :
Vitamins do not provide energy as they are not stored in our bodies.
Q: In the following that is not related to gases low.
1004 05ee8665d109b5d6e015e58ea
5ee8665d109b5d6e015e58ea- 1Boyle’s lawfalse
- 2Avogadro’s lawfalse
- 3Len'z lawtrue
- 4Charles’s lawfalse
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Answer : 3. "Len'z law"
Q: Reading of a barometer going down is an indication of
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5edefe488c4c964f73d38f0f- 1rainfalltrue
- 2snowfalse
- 3stormfalse
- 4intense heatfalse
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Answer : 1. "rainfall"
Explanation :
Low pressure – when reading of the barometer is lower than inHg, this is considered as low air pressure, which is associated with warm air and rainstorm. So, clearly, a falling barometer indicates bad weather is ahead.
Q: The average salinity of sea water is
1162 05edefa608c4c964f73d37fc0
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) .
Q: The instrument used to examine a person’s digestive tract is called_____.
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5ee868ca109b5d6e015e6447- 1Oscilloscopefalse
- 2Microscopefalse
- 3Endoscopetrue
- 4Radiographfalse
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Answer : 3. "Endoscope"
Explanation :
A flexible tube called an endoscope is used to view different parts of the digestive tract. When passed through the mouth (as shown on the left), an endoscope can be used to examine the esophagus, stomach, and some of the small intestine.
Q: The gases used in different types of welding would include
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5edef9548c4c964f73d37d62- 1oxygen and hydrogenfalse
- 2oxygen, hydrogen, acetylene and nitrogenfalse
- 3oxygen, acetylene and argonfalse
- 4oxygen and acetylenetrue
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Answer : 4. "oxygen and acetylene"
Explanation :
Acetylene is the only fuel gas suitable for gas welding because of its favourable flame characteristics of both high temperature and high propagation rates. Other fuel gases, such as propane, propylene or natural gas, produce insufficient heat input for welding but are used for cutting, torch brazing and soldering.
Q: Polio disease is caused by?
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603633ee9792c13b2854c19c- 1Bacteriafalse
- 2Protozoafalse
- 3Virustrue
- 4None of thesefalse
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