Name the chief factors responsible for anomalous behaviour of lithium.
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Factors responsible for the rapid spread of bread mould on slices of bread are
(c) (i) and (ii)
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Discuss the factors responsible for ascent of xylem sap in plants.
Transpirational pull is responsible for the ascent of water in the xylem. This ascent of water is dependent on the following physical factors: Cohesion – Mutual attraction between water molecules Surface tension...
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What factors may be responsible for losses of grains during storage?
During the storage of grains, various biotic factors such as insects, rodents, mites, fungi, bacteria, etc. and various abiotic factors such as inappropriate moisture, temperature, lack of sunlight, etc. are...
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(i) Define an ecosystem. (ii) What factors are responsible for the distribution of plants and animals in India?
(i) All the plants and animals in an area are interdependent on each other. The plants and animals; along with their physical environment make the ecosystem. (ii) Relief (Land and soil)...
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Give two examples to show the anomalous behaviour of fluorine.
Anomalous behaviour of fluorine (i) It forms only one oxoacid as compared to other halogens that form a number of oxoacids. (ii) Ionisation enthalpy, electronegativity, and electrode potential of fluorine...
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Discuss the factors responsible for ascent of xylem sap in plants
Transpirational pull is responsible for the ascent of water in the xylem. This ascent of water is dependent on the following physical factors: • Cohesion – Mutual attraction between water molecules •...
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Answer the following questions: Which are the two main climatic factors responsible for soil formation?
Which are the two main climatic factors responsible for soil formation? Answer: Temperature and rainfall Write any two reasons for land degradation today. Answer: Increasing population and large scale deforestation Why is land considered an important...
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Which of the following activities does not reflect responsible behaviour with regard to waste disposal?
(b) Waste collected in polythene bags for disposal.
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Graphite is a soft solid lubricant extremely difficult to melt. The reason for this anomalous behaviour is that graphite
(d) : Graphite has a twodimensional sheet like structure and each carbon atom makes a use of sp2 hybridisation. The above layer structure of graphite is less compact than that of...
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Two lithium nuclei in a lithium vapour at room temperature do not combine to form a carbon nucleus because
(d) Coulomb repulsion does not allow the nuclei to come very close.
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