Please select a subject first
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What are alloys?
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What is anodising? Give its applications.
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The exchange of respiratory gases in the cells of plants occurs by the process of _______________
(a) Osmosis
(b) Diffusion
(c) Glycolysis
(d) exhalation
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| There is a pair of bean-shaped organs P in the human body towards the back, just above the waist. A waste product Q formed by the decomposition of unused proteins in the liver is brought into organ P through blood by an artery R. The numerous tiny filters S present in organ P clean the dirty blood by removing the waste product Q. The clean blood goes into circulation through a vein T. The waste substance Q, other waste salts, and excess water form a yellowish liquid U which goes from organ P into a bag-like structure V through two tubes W. This liquid is then thrown out of the body through a tube X. |
- What is (i) organ P, and (ii) waste substance Q?
- Name (i) artery R, and (ii) vein T.
- What are tiny filters S known as?
- Name (i) liquid U (ii) structure V (iii) tubes W, and (iv) tube X.
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What do these symbols indicate? Explain our opinion about those symbols.
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Explain the meanings of ‘symbols A’ & ‘B’.
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Write the types and examples of biodiversity.
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Identify the process shown in the diagram and explain it in short
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Answer the following question.
a) What is meant by corrosion?
b) Write names of any two methods of prevention of corrosion.
c) In which method, metal like copper, aluminium are coated with a thin layer of their oxides by means of electrolysis.
d) Explain this method with diagram.
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Find the odd man out:
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Identify the following symbol and state their significance.
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Choose the correct alternative and rewrite the following:
Iron is _____________________.
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Write three methods of preventing rusting of iron.
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List the organs of Human respiratory system.
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Rewrite the following statement by selecting the correct option.
During respiration, ____________ gas is given out.
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Occurrence of diversity among the organisms of the same species is called ________ diversity.
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Define.
Diversity (Biodiversity)
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What is the meaning of the symbol shown in the figure with respect to environment?
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What is the meaning of the symbol shown in the figure with respect to environment?
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What is the meaning of the symbol shown in the figure with respect to environment?
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