4101: In a dry cell (battery), which of the following are used as electrolytes?
(a) Ammonium chloride and Zinc chloride
(b) Sodium chloride and Calcium chloride
(c) Magnesium chloride and Zinc chloride
(d) Ammonium chloride and Calcium chloride
4102: A rainy day, as defined by the Indian Meteorological department, is a day when the rainfall at a point received is
(a) 0.5 mm to 1 mm in 24 hours
(b) 1.1 mm to 1.5 mm in 24 hours
(c) 1.6 mm to 2 mm in 24 hours
(d) above 2.5 mm in 24 hours
4103: Consider the following statements :
I. Tapeworm is a hermaphrodite.
II. Round-worm has separate sexes.
III. Filaria is caused by a nematode.
IV. Guinea-worm is an annelid.
Which of these are correct ?
(a) I and II
(b) I, II and III
(c) III and IV
(d) II, III and IV
4104: Which organelle in the cell, other than nucleus, contains DNA ?
(a) Centriole
(b) Golgi apparatus
(c) Lysosome
(d) Mitochondrion
4105: Consider the following statements :
AIDS is transmitted
I. by sexual intercourse.
II. by blood transfusion.
III. by mosquitoes and other blood sucking insects.
IV. across the placenta.
Of these statements
(a) I, II and III are correct
(b) I, II and IV are correct
(c) I, II and IV are correct
(d) I and III are correct