1491: A balloon filled with air is weighed (W) so that it just floats in water as shown in the figure. When it is further pushed by a short distance in water, it will:
(a) Sink to the bottom.
(b) Stay at the depth where it stands submerged.
(c) Come back to its original position.
(d) Sink down a little further but will not reach the bottom.
1492: A narrow strip of land, bordered on both sides by water, connecting to larger bodies of land is called:
(a) Dune
(b) Equinox
(c) Isthmus
(d) Strait
1493: Mouth and foot diseases in cattle are caused due to:
(a) Bacteria
(b) Virus
(c) Fungi
(d) Penicillium
1494: Besides proteins and carbohydrates, other elements of nutritional value found in milk include
(a) calcium, potassium and iron
(b) calcium and potassium
(c) potassium and iron
(d) calcium and iron
1495: Which of the following statements about the cultivation of tea and coffee is true?
(a) Tea grows at a higher altitude than coffee
(b) Coffee grows at a higher altitude than tea
(c) Both grow at about the same altitude
(d) There is no climatic relationship between the two crops