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The maximum amount of electrolytes and w...

The maximum amount of electrolytes and water (70-80 percent) form the glomerular filtrate is reabsorbed in which part of the nephron

A

Proximal convoluted tubule

B

Descending limb of loop of Henle

C

Ascending limb of loop of Henle

D

Distal convoluted tubule

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A
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Atmosphere, hydrosphere, lithosphere and biosphere are the four main segments of the environment. Atmosphere is a cover of gases that extends to a height of about 1600 km above the surface of the earth and protects the life on the earth from harmful radiations coming from the sun or the outer space. Atmosphere is further divided into four regions such as troposphere, stratosphere, mesosphere and thermosphere. Hydrosphere forms that part of the environment which contains water. Lithosphere is the solid component of the earth consisting of soil, rocks, mountains etc. Biosphere is that part of the above segments where living organisms interact with these parts and live together. Hydrogen and Helium are found in which of the following regions ?

Chemical reactions are invariably assocated with the transfer of energy either in the form of heat or light. In the laboratory, heat changes in physical and chemical processes are measured with an instrument called calorimeter. Heat change in the process is calculated as: q= ms DeltaT , s= specific heat = c Delta T , c= heat capacity Heat of reaction at constant volume is measured using bomb calorimeter. qv= Delta U= internal energy change. Heat of reaction at constant pressure is measured using simple or water calorimeter. q_(p) = Delta H, q_(p) = q_(v) + P Delta V, DeltaH = DeltaU + Delta nRT The amount of energy released during a chemical change depnds on the physical state of reactants and products, the condition of pressure, temperature and volume at which the reaction is carried out. The variation of heat of reaction with temperature and pressure is given by Kirchhoff's equation: (DeltaH_(2)- DeltaH_(1))/(TT_(2)-T_(1)) = DeltaC_(P) (At constant pressure), (DeltaU_(2)- DeltaU_(1))/(TT_(2)-T_(1)) = DeltaC_(V) (At constant volume) The heat capacity of bomb calorimeter (with its contents) is 500J/K. When 0.1g of CH_(4) was burnt in this calorimeter the temperature rose by 2^(@)C . The value of DeltaU per mole will be

Chemical reactions are invariably assocated with the transfer of energy either in the form of heat or light. In the laboratory, heat changes in physical and chemical processes are measured with an instrument called calorimeter. Heat change in the process is calculated as: q= ms DeltaT , s= specific heat = c Delta T , c= heat capacity Heat of reaction at constant volume is measured using bomb calorimeter. qv= Delta U= internal energy change. Heat of reaction at constant pressure is measured using simple or water calorimeter. q_(p) = Delta H, q_(p) = q_(v) + P Delta V, DeltaH = DeltaU + Delta nRT The amount of energy released during a chemical change depnds on the physical state of reactants and products, the condition of pressure, temperature and volume at which the reaction is carried out. The variation of heat of reaction with temperature and pressure is given by Kirchhoff's equation: (DeltaH_(2)- DeltaH_(1))/(TT_(2)-T_(1)) = DeltaC_(P) (At constant pressure), (DeltaU_(2)- DeltaU_(1))/(TT_(2)-T_(1)) = DeltaC_(V) (At constant volume) DeltaC_(P) for a reaction is given by 0.2T cal/deg. Its enthalpy of reaction at 10K is -14.2 kcal. Its enthalpy of reaction at 100K in kcal will be

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AAKASH SERIES-EXCRETORY PRODUCTS AND THEIR ELIMINATION-EXERCISE - III (PREVIOUS AIPMT/NEET QUESTIONS)
  1. The part of nephron involved in active reabsorption of sodium is

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  2. In mammals, which blood vessel would normally carry largest amount of ...

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  3. Human urine is usually acidic because:

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  4. Removal of proximal convoluted tubule from the nephron will result in:

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  5. Which of the following does not favour the formation of large quantiti...

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  6. Which of the following causes an increase in sodium reabsorption in di...

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  7. Which one of the following characteristics is common both in humans an...

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  8. A fall in glomerular filtration rate (GFR) activates :

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  9. The maximum amount of electrolytes and water (70-80 percent) form the ...

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  10. Uricotelic mode of passing out nitrogenous wastes is found in:

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  11. Which one of the following statement is correct with respect to kidney...

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  12. Which one of the following correctly explains the function of a specif...

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  13. Which one of the following statements with regard to the excretion by ...

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  14. The principal nitrogenous excretory compound in humans is synthesised

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  15. What will happen if the stretch receptors of the urinary bladder wall ...

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  16. Uric acid is the chief nitrogenous component of the excretory products...

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  17. Consider the following four statements (i)-(iv) about certain desert a...

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  18. A person who is on a long hunger strike and is surviving only on water...

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