(41)A person having AB-group of blood can donate blood to a person having
(a) O-group
(b) AB-group
(c) B-group
(d) A-group
(42)Why do birds not have respiratory trouble at the time of flying at high altitude?
(a) they use less oxygen
(b) they have extra air sacs
(c) they fly inactively
(d) their lungs are very large
(43)After the Chauri-Chaura incident, Gandhiji suspended the
(a) Quit India Movement
(b) Non-Cooperation Movement
(c) Khilafat Movement
(d) Civil Disobedience
(44)Refrigerators keep food unspoiled because
(a) it sterilises
(b) at its low temperature,the germs are frozen
(c) at its low temperature,the germs are are killed
(d) at its low temperature, bacteria and moulds are inactive
(45)Select the one which is not a mixture?
(a) distilled water
(b) lpg
(c) gasoline
(d) air
(46)The temperature which has the same reading on both Fahrenheit and Celsius scales is
(a) -140 degree
(b) -34 degree
(c) -40 degree
(d) 40 degree
(47)Water boils at a lower temperature on the hills because
(a) there is less oxygen
(b) there is a decrease in air pressure on hills
(c) there is less carbon dioxide on the hills
(d) it is cold on the hills
(48)Source of energy in ecosystem is
(a) atp
(b) sugar produced in photosynthesis
(c) green plants
(d) sun
(49)Which of the following elements is not present in stainless steel?
(a) nickel
(b) chromium
(c) tungsten
(d) iron
(50)SAKA year ends with
(a) ASAD
(b) MAGH
(c) FALGUNA
(d) CHAITRA