4311: Which one of the following is a monument constructed by Sher Shah?
(a) Kila-Kuhna Mosque at Delhi
(b) Atala Masjid at Jaunpur
(c) Bara Sona Masjid at Gaur
(d) Quwwat-ul-Islam Mosque at Delhi
4312: A person walks 10 km north from a point, then he moves 20 km south and subsequently he turns 20 km north. He again turns 20 km south and then moves 10 km east. How far is he from the starting point?
(a) 10 km
(b) 20 km
(c) 30 km
(d) None of the above
4313: Persons below the poverty line in India are classified as such based on whether
(a) they are entitled to a minimum prescribed food basket
(b) they get work for a prescribed minimum number of days in a year
(c) they belong to agricultural labourer household and the scheduled caste/tribe social group
(d) their daily wages fall below the prescribed minimum wages
4314: An aqueous solution of copper sulphate is acidic in nature because the salt undergoes
(a) dialysis
(b) electrolysis
(c) hydrolysis
(d) photolysis
4315: Which one of the following is the best description of the term 'ecosystem'?
(a) A community of organisms interacting with one another.
(b) That part of the Earth which is inhabited by living organisms.
(c) A community of organisms together with the environment in which they live
(d) The flora and fauna of a geographical area