2501: The internal antenna of a transistor set is made of:
(a) Iron
(b) Ferro-chrome
(c) Copper
(d) Alnico
2502: The age of a father is twice that of the elder son. Ten years hence the age of the father will be three times that of the younger son. If the difference of ages of the two sons is 15 years, the age of the father is
(a) 100 years
(b) 70 years
(c) 60 years
(d) 50 years
2503: A small pouch containing silica gel is often found in bottles of medicine in tablet or powder form because silica gel
(a) kills bacteria
(b) kills germs and spores
(c) absorbs moisture
(d) absorbs all gases present inside the bottle
2504: Flame of the forest is:
(a) A tree blossomed with flowers like flame in leafless season
(b) Fire developed in the forest due to strong wind
(c) A lady who worked for the development of the forests
(d) An insect which glows like a flame in the forest
2505: At which one of the following places do two important rivers of India originate, while one of them flows towards north and merges with another important river flowing towards Bay of Bengal, the other one flows towards Arabian Sea?
(a) Mahabaleshwar
(b) Badrinath
(c) Amarkantak
(d) Nasik