General Science Practice Question and Answer
8Q: Which of the following statements about water is false? 2096 05b5cc601e4d2b4197774b462
5b5cc601e4d2b4197774b462- 1There is extensive intramolecular hydrogen bonding in the condensed phase.true
- 2Water is oxidized to oxygen during photosynthesis.false
- 3Ice formed by heavy water sinks in normal water.false
- 4Water can act both as an acid and as a base.false
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Answer : 1. "There is extensive intramolecular hydrogen bonding in the condensed phase."
Explanation :
Answer: A) There is extensive intramolecular hydrogen bonding in the condensed phase. Explanation: Water possess intermolecular hydrogen bonding in the condensed phase. Hence, the given statement 'There is extensive intramolecular hydrogen bonding in the condensed phase.' about water is FALSE.
Q: Which of the following carbohydrates is a polysaccharide? 1708 05b5cc690e4d2b4197774c42c
5b5cc690e4d2b4197774c42c- 1Fructosefalse
- 2Cellulosetrue
- 3Glucosefalse
- 4Sucrosefalse
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Answer : 2. "Cellulose"
Explanation :
Answer: B) Cellulose Explanation: Carbohydrates are also called as saccharides are molecular compounds made from just three elements: carbon, hydrogen and oxygen. Carbohydrates are: * a source of energy for the body e.g. glucose and a store of energy, e.g. starch in plants * building blocks for polysaccharides (giant carbohydrates), e.g. cellulose in plants and glycogen in the human body * components of other molecules eg DNA, RNA, glycolipids, glycoproteins, ATP Types: 1. Monosaccharides (e.g. glucose) and 2. Disaccharides (e.g. sucrose) are relatively small molecules. They are often called sugars. 3. Other carbohydrate molecules are very large called Polysaccharides such as starch and cellulose.
Q: Stainless steel contains steel and 1501 05b5cc7efe4d2b41977751d71
5b5cc7efe4d2b41977751d71- 1manganesefalse
- 2vanadiumfalse
- 3nickelfalse
- 4chromiumtrue
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Answer : 4. "chromium"
Explanation :
Answer: D) chromium Explanation: Stainless steel contains 18% chromium and 82% steel
Q: The largest artery in human body is
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5d7b85293b63ff29cded0552- 1Aortatrue
- 2Capillaryfalse
- 3Vena cavafalse
- 4Pulmonary veinfalse
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Answer : 1. "Aorta"
Q: The basic structural and functional unit of living organisms is-
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5db95ca712906e36bedba25b- 1Celltrue
- 2Tissuefalse
- 3Organfalse
- 4Systemsfalse
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Answer : 1. "Cell "
Q: An element that does not occur in nature but can be produced artificially is
2022 05df9d3e09e7c624c9bff04d3
5df9d3e09e7c624c9bff04d3- 1thoriumfalse
- 2radiumfalse
- 3plutoniumtrue
- 4uraniumfalse
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Answer : 3. "plutonium "
Q: Color of light is determined by its :
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5e81a261d56d695255dbde39- 1dimensionfalse
- 2wavelengthtrue
- 3Intensityfalse
- 4Velocityfalse
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Answer : 2. "wavelength"
Q: Due to the increase in the amount of carbon dioxide in the atmosphere-
591 061b1d83879954245bc0602d7
61b1d83879954245bc0602d7- 1Rises in temperaturetrue
- 2Decrease in temperaturefalse
- 3Change according to seasonfalse
- 4Continuous decrease in temperaturefalse
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