Home
Class 12
BIOLOGY
Which two of the following changes (1-4)...

Which two of the following changes (1-4) usually tend to occur in the plain dwellers when they move to high altitudes?
(a) Increase in RBC size
(b) Increase in RBC production
(c) Increase in breathing rate
(d) Increased oxygen-binding capacity of haemoglobin

A

(ii) and (iii)

B

(iii) and (iv)

C

(i) and (iv)

D

(i) and (ii)

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • BODY FLUIDS AND CIRCULATION

    AAKASH SERIES|Exercise Exercise -II (Disorders of Circulatory System)|8 Videos

  • BIOTECHNOLOGY AND ITS APPLICATIONS

    AAKASH SERIES|Exercise Exercise - III (Previous AIPMT/NEET Questions )|19 Videos

  • BREATHING AND EXCHANGE OF GASES

    AAKASH SERIES|Exercise EXERCISE-III (Previous AIPMT/NEET Questions)|18 Videos

Similar Questions

Explore conceptually related problems

For the reaction A+Bto products, it is found that order of A is 1 and order of B is 1//2 . When concentrations of both A and B are increased four times the rate will increase by a factor

Which of the following statements about the modern periodic table are incorrect ? (a) The elements in Modern periodic table are arranged on the basis of their decreasing atomic number. (b) The elements in Modern periodic table are arranged on the basis of their increasing atomic masses. (c) Isotopes are placed in adjoining groups in the periodic table. (d) The elements in the modern periodic table are arranged on the basis of their increasing atomic number.

At absolute zero which of the following statements about an ideal gas are correct ? a) The motion of gaseous molecules ceases b) The volume of gas increases by 273 times c) The K.E of gas molecules increases ab normally d) The volume of a gas becomes zero

The instantaneous rate of an elementary chamical reactkon aA+bBhArr cC+dD can be given by rate =K_(f)[A]^(a)[B]^(b)-K_(b)[C]^(c)[D]^(d) where K_(f) and K_(b) are rate constants for forward and backward reactions respectively for the reversible reaction. If the reaction is an irreversible one, the rate is expressed as, rate =K[A]^(a)[B]^(b) where K is rate contant for the given irreversible rate of disappearance of A is a/b times the rate of disappearance of B. The variation of rate constant K with temperature is expressed in terms of Arrhenius equation: K=Ae^(-E_(a)//RT) whereas the ratio (K_(f))/(K_(b)) is expressed in terms of van't Hoff isochore: (K_(f))/(K_(b))=Ae^(-DeltaH//RT) , where E_(a) and DeltaH are energy of activation and heat of reaction respectively. The variation of rate constant K and (K_(f))/(K_(b)) with temperature shows the following effects: For endothrmic reaction when T increases then K increases and (K_(f))/(K_(b)) also increases. (ii) For endothemic reaction when T decreases then K decreases and (K_(f))/(K_(b)) also decreases. (iii) For exothermic when T increases then K and (K_(f))/(K_(b)) both increases. (iv) For exothermic reaction when T decreases then K increases and (K_(f))/(K_(b)) decrease. (v) For exothermic reaction when T increases thenK and (K_(f))/(K_(b)) both decrease.

AAKASH SERIES-BODY FLUIDS AND CIRCULATION-Exercise -III (Previous AIPMT/NEET Questions)
  1. Which one of the following human organs is often called the "graveyard...

    Text Solution

    |

  2. 'Bundle of His' is a part of which one of the following organs in huma...

    Text Solution

    |

  3. Which one of the following plasma proteins is involved in the coagulat...

    Text Solution

    |

  4. Arteries are best defined as the vessels which

    Text Solution

    |

  5. Which one of the following statements is correct regarding blood press...

    Text Solution

    |

  6. A person with unknown blood group under ABO system, has suffered much ...

    Text Solution

    |

  7. Given below is the ECG of a normal human. Which one of its components ...

    Text Solution

    |

  8. If due to some injury the chordae tendineae of the tricuspid value of ...

    Text Solution

    |

  9. Which two of the following changes (1-4) usually tend to occur in the ...

    Text Solution

    |

  10. Fastest distribution of some injectable material/ medicine and with no...

    Text Solution

    |

  11. Given below are four statements (i-iv) regarding human blood circulato...

    Text Solution

    |

  12. The haemoglobin content per 100 ml of blood of a normal healthy human ...

    Text Solution

    |

  13. There is no DNA in

    Text Solution

    |

  14. In a standard ECG which one of the following alphabets is the correct ...

    Text Solution

    |

  15. Globulins contained in human blood plasma are primarily involved in

    Text Solution

    |

  16. Compared to blood our lymph has

    Text Solution

    |

  17. In humans, blood passes from the post caval to the diastolic right atr...

    Text Solution

    |

  18. The most active phagocytic white blood cells are

    Text Solution

    |

  19. Which type of white blood cells are concerned with the release of hist...

    Text Solution

    |

  20. A drop of each of the following is placed separately on four sides. Wh...

    Text Solution

    |