General Science Biology- 25

425. Pouring kerosene oil on stagnant water reduces mosquito problem because it:

(a) is highly toxic to the mosquitoes

(b) repels the mosquitoes

(c) interrupts the breathing of larvae

(d) interrupts the mating of adults

Answer: (c)

426. AA hereditary disease in which the blood does not clot and the affected

person may bleed to death even from a small cut, is called:

(a) Leukemia                                                     (b) Haemophilia

(c) Chikun Guniya                                           (d) Anaemia

Answer: (b)

427. Pepsin, a digestive enzyme, is produced in the:

(a) Small intestine                                            (b) Liver

(c) Kidney                                                           (d) Stomach

Answer: (d)

428. Palak leaves rich in:

(a) Vitamin A                                                     (b) Iron

(c) Carotin                                                         (d) Cystine

Answer: (b)

429. Which one of the following was not proposed by Charles Darwin?

(a) Survival of the fittest

(b) Natural selection

(c) Inheritance of acquired charecters

(d) Struggle for existence

Answer: (c)

430. Angiology is the study of:

(a) blood vessels                                             (b) Heart

(c) Ageing                                                          (d) Nervous system

Answer: (a)

431. The heart beat rate of elephant per minute:

(a) 120                                                       (b) 140

(c) 72                                                         (d) 25

Answer: (d)

432. Nitrogen base found in RNA:

(a) Thymin                                                  (b) Guanin

(c) Urasil                                                      (d) Adinin

Answer: (c)

433. Hypoxia is a phenomenon that occurs in:

(a) Stratosphere                                       (b) Human body

(c) Aquatic environment                        (d) None of these

Answer: (c)

434. Fire fly gives us cold light by virtue of its:

(a) Flourescence                              (b) Phosphorescence

(c) Effervescence                             (d) Chemiluminescence

Answer: (d) 

435.  The sugar present in milk is 
Lactose
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