1086: Isotopes of the same element differ in the number of:
(a) Protons
(b) Neutrons
(c) Electrons
(d) Positrons
1087: Where was the World Summit on Sustainable Development (Rio + 10) held ?
(a) Johannesburg
(b) Shanghai
(c) Nova Scotia
(d) Davos
1088: The 73rd Constitution Amendment Act, 1992 refers to the
(a) generation of gainful employment for the unemployed and the underemployed men and women in rural area
(b) generation of employment for the able bodied adults who are in need and desirous of work during the lean agricultural season
(c) laying the foundation for strong and vibrant Panchayati Raj Institutions in the country
(d) guarantee of right to life, liberty and security of person, equality before law and equal protection without discrimination
1089: A fertile-soil, suitable for growing common crops, is likely to have a pH value of
(a) three
(b) four
(c) six to seven
(d) nine to ten
1090: Which of the following is the correct order of increasing size of the grains of soil particles?
(A) Clay
(B) Silt
(C) Sand
(D) Gravel
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(a) A, B, C, D
(b) D, C, A, B
(c) B, C, A, D
(d) C, D, B, A