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Repost from Sos Study Of Science
I request the students who can share opinion about my channel can make a short video and share. I feel proud to post in my channel
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I request the students who can share opinion about my channel can make a short video and share. I feel proud to post in my channel
3 611
(i) How does overload and short-circuit occur in an electric circuit ? Explain.
What is the function of fuse during this situation ?
(ii) Mention two properties of magnetic field lines.
Give reason :
(i) Ionic compounds in solid state do not conduct electricity, whereas in
molten state are good conductors of electricity.
(ii) Silver articles when exposed to air gradually turn blackish.
(iii) Chemical reaction does not take place when copper is added to iron
sulphate solution.
Give reason :
(i) “Alloys of iron are more useful when compared to pure iron.”
(ii) Copper loses its brown layer gradually when exposed to air.
(iii) Aluminium oxide is called amphoteric oxide.
(i) Write the differences between homologous organs and analogous organs.
(ii) Write the differences between the sex chromosomes of man and sex
chromosomes of woman.
(iii) Sex of a child is determined by the father. How ?
[08/04, 5:10 am] +91 99728 41416: Set 6
4 marks questions
(i) Define electric potential difference. How is ammeter connected in an
electric circuit ?
(ii) Explain the application of heating effect of electric current in an electric
bulb and the fuse used in an electric circuit.
(i) State Ohm’s law
(ii) Explain the factors on which the resistance of a conductor depend.
(i) What is neutralisation reaction ?
(ii) Name the products of chlor-alkali process. Write one use of each.
(i) How does relative method help to determine the age of fossils ?
(ii) “Experiences of an individual during its life time cannot direct evolution.”
Why ?
(iii) “Chromosomes inherited from the father determines the sex of a child.”
Explain.
