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We are the microscopic vessel made of si...

We are the microscopic vessel made of single layer of cells. We allow diffusion of various substances. We establish connection between arteries and veins. Who are we?

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Blood capillaries.
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It is not possible to measure the atomic radius precisely since the electron cloud surrounding the atom doesnot have sharp boundary. One practical approach to estimate the size of an atom of a non-metallic element is to measure the distance between two atoms when they are bound together by a single bond in a covalent molecule and then dividing by two. For metals we define the term "metallic radius" which is taken as half the internuclear distance separating the metal cores in the metallic crystal. The vander Waal's radius represents the overall size of the atoms which includes its valence shell in a nonbonded situation. It is the half of the distance between two similar atoms in separate molecules in a solid. The atomic radius decreases across a period and increases down the group. Same trends are observed in case of ionic radius. Ionic radius of the species having same number of electrons depends on the number of protons in their nuclei. The size of iso electronic species -F^(-) , Na^(+) and Mg^(2+) is effected by

It is not possible to measure the atomic radius precisely since the electron cloud surrounding the atom doesnot have sharp boundary. One practical approach to estimate the size of an atom of a non-metallic element is to measure the distance between two atoms when they are bound together by a single bond in a covalent molecule and then dividing by two. For metals we define the term "metallic radius" which is taken as half the internuclear distance separating the metal cores in the metallic crystal. The vander Waal's radius represents the overall size of the atoms which includes its valence shell in a nonbonded situation. It is the half of the distance between two similar atoms in separate molecules in a solid. The atomic radius decreases across a period and increases down the group. Same trends are observed in case of ionic radius. Ionic radius of the species having same number of electrons depends on the number of protons in their nuclei. The correct order of radii is

It is not possible to measure the atomic radius precisely since the electron cloud surrounding the atom doesnot have sharp boundary. One practical approach to estimate the size of an atom of a non-metallic element is to measure the distance between two atoms when they are bound together by a single bond in a covalent molecule and then dividing by two. For metals we define the term "metallic radius" which is taken as half the internuclear distance separating the metal cores in the metallic crystal. The vander Waal's radius represents the overall size of the atoms which includes its valence shell in a nonbonded situation. It is the half of the distance between two similar atoms in separate molecules in a solid. The atomic radius decreases across a period and increases down the group. Same trends are observed in case of ionic radius. Ionic radius of the species having same number of electrons depends on the number of protons in their nuclei. Atomic radii of the noble gases are larger than the precedent elements of the same periods because

It is not possible to measure the atomic radius precisely since the electron cloud surrounding the atom doesnot have sharp boundary. One practical approach to estimate the size of an atom of a non-metallic element is to measure the distance between two atoms when they are bound together by a single bond in a covalent molecule and then dividing by two. For metals we define the term "metallic radius" which is taken as half the internuclear distance separating the metal cores in the metallic crystal. The vander Waal's radius represents the overall size of the atoms which includes its valence shell in a nonbonded situation. It is the half of the distance between two similar atoms in separate molecules in a solid. The atomic radius decreases across a period and increases down the group. Same trends are observed in case of ionic radius. Ionic radius of the species having same number of electrons depends on the number of protons in their nuclei. Which of the following statement is correct?

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We know that a ship, even though it is made up of tonnes of iron, floats on water. How do you feel about the scientists who found the scientific principles and efforts in making a ship?

VGS PUBLICATION-BRILLIANT-TRANSPORTATION - THE CIRCULATORY SYSTEM-CREATIVE QUESTIONS FOR NEW MODEL PAPER
  1. Observe the classification and complete the blank ?

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  2. Observe the flow chart and complete the blank?

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  3. We are the microscopic vessel made of single layer of cells. We allow ...

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  4. I collect blood form the bldy parts. I have velves and blood pressure ...

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  5. I distribute blood to the body parts from heart. I have no valves. I h...

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  6. I transport water and minerals from roots to the apical parts of the p...

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  7. I transport food materials from the leaves to growing parts of the pla...

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  8. I am the middle man of the bldy. I help in assimilation of digested fo...

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  9. I am a part of blood. I am responsible for blood coagulation. Who am I...

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  10. I am the pargest artery of our body to supply platelets. I start the p...

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  11. I am an enzyme. I secreted from the blood platelets. I start the proce...

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  12. I supply blood to the heart muscles. Any blockage in the leads to hear...

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  13. Identify the mismatched pair. 1) Double circulation - Man 2) Singl...

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  14. Idendify the mismatched pair. 1) Blue coloured blood - Snake 2) Re...

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  15. Identify the mismatched pair. 1) Xylem - Transport of food 2) Phlo...

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  16. Identify the mismatched pair. 1) Blood platelets - Blood coagulation...

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  17. Complete the blanks ? In blood………..pigment is present. It helps in t...

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  18. The valve that is present between right atrium and right ventricle is ...

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  19. Marcello Malpighi studied………………and discovered the micro blood vessels ...

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  20. Veins have……………………to provide one way direction of flow. The blood pres...

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