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Science- Questions

CBSE 8th standard Questions

  Which of the following statements is correct?(a) All metals are ductile.(b) All non-metals are ductile.(c) Generally metals are ductile.(d) Some non-metals are ductile.
(class: 8th std )    Science

  Can you store acidic lemon pickles in an aluminium utensil? Explain.
(class: 8th std )    Science

  Name a non-metal which is a good conductor of heat and electricity.
(class: 8th std )    Science

  Name a metal which exists in liquid state.
(class: 8th std )    Science

  Oxides of non-metals are generally of which nature?
(class: 8th std )    Science

   Compare the chemical properties of metals and non-metals.
(class: 8th std )    Science

  Give some uses of non-metals.
(class: 8th std )    Science

  How do different metals react with water?
(class: 8th std )    Science

  What are Sonorous materials?
(class: 8th std )    Science

  Name two metals which are both malleable and ductile.  
(class: 8th std )    Science

  Why are utensils made of aluminium and brass?
(class: 8th std )    Science

  How do non-metals react with water?
(class: 8th std )    Science

   What is an alloy? Describe.
(class: 8th std )    Science

  What is Rust ?
(class: 8th std )    Science

  Define: (1) Malleability (2) Ductility (3) Metals (4) Non-metals (5) Metalloids
(class: 8th std )    Science

  Indicate True(T) or False(F): a.    Unicellular organisms have one-celled body.b.    Muscle cells are branched structures.c.    The basic living structure of an organism is an organ.d.    Amoeba has irregular shape.
(class: 8th std )    Science

  Make a sketch of the human nerve dell. What function do nerve cells perform?
(class: 8th std )    Science

  Write short notes on the following:(a) Cytoplasm (b) Nucleus of a cell
(class: 8th std )    Science

  Which part of the cell contains organelles?
(class: 8th std )    Science

  Make sketches of animal and plant cells. State three differences between them.
(class: 8th std )    Science

  State a difference between eukaryotes and prokaryotes.
(class: 8th std )    Science

  Where are the chromosomes found in cell? State their functions.
(class: 8th std )    Science

  Cells are the basic structural units of living organism. Explain.
(class: 8th std )    Science

  Explain why chloroplasts are found only in plant cells.
(class: 8th std )    Science

  Define Prokaryotes and Eukaryotes.
(class: 8th std )    Science

  What is Protoplasm?
(class: 8th std )    Science

  Give three examples of unicellular organisms.
(class: 8th std )    Science

  Name the cell organelle which is found only in plant cell.
(class: 8th std )    Science

  What is the smallest cell size?
(class: 8th std )    Science

  What is the largest cell?
(class: 8th std )    Science

    

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