A boat goes 15 km in an hour in still water, and takes thrice the time to cover the same distance upstream. The speed of the current (in km / hr) is –

Directions: In the following questions, you have to passage with 5 questions following each passage. Read the passage carefully and choose the best answer to each question out of the four alternatives.
Some people say that man's desire for war is due to his fight for survival and that war is necessary to preserve his virility. Yet, war nowadays leaves a legacy of the weakest men and stimulates not the noble but the bestial qualities of mankind.
 A venture of some kind is necessary for man; he will inevitably deteriorate physically and mentally if his life is one of ease and luxury lived in an atmosphere of ‘Safety First.’ This is the real reason behind our love of sports in the open air. It is no use being a millionaire if one suffers from chronic in digestion; a tramp with good innards is far happier. Nothing that money can buy is worthwhile without good health. There is no better way to perfect health and physical fitness than to walk over or climb hills and mountains.
 But mountains give us much more than mere physical fitness; they exercise the mental faculties as well. Climbing a high and difficult peak is as much a mental exercise as a physical exercise. It calls for sense and judgement for planning and thinking ahead, for anticipating difficulty and danger, for responsibility towards one's companions, and best of all, it brings the mountaineer into touch with the beauties of the universe. 

If a man leads a life in an atmosphere of 'Safety First’ he will 

गुण सन्धि है? 

Fundamental rights are given by the Indian Constitution?

'नेकी और पूछ—पूछ ' लोकोक्ति का सही अर्थ है—

A man gives 20% of his money to his eldest son, 30% of remaining he gives to his younger son. 10% of the remaining he gives in a school for poor boys still he has Rs.100.80. Find his total sum. 

The union government of India made Central Nodal Agencies like NAFED and FCI striving to assure better returns for the farmers. When was NAFED founded?