## Archive for how to prepare NDA exams

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1. The separation energy of the electron, present in shell n = 3 is 1.51 eV. What is the energy in the first excited state? (A) – 1.51 eV (B) – 3.4 eV (C) + 1.51 eV (D) – 13.6 eV 2. If the electron is present in the n = 5 level, how many […]

1) Two equal sums are lent at the same time at 4% and 3% per annum simple interest respectively. The former sum is recovered two years earlier than the latter and the amount each case is Rs. 620. Find the sum. (a) Rs.300 (b) Rs.400 (c) Rs.5oo (d) NONE OF THESE Ans: As the sum […]

1. If A ={I, 2, {3, 4}, 5}, then the correct statement is : A. {3, 4} Î A B. {3, 4} Ï A C. {3, 4} Ì A D. { {3, 4} } Ì A 2. If D be subset of the set of all rational numbers, which can be expressed as terminating decimals, […]

I. SScheme of Examination • a. The subjects of the written examination, the time allowed and the maximum marks allotted to each subject will be as follows :– Subject Code Duration Maximum Marks Mathematics 01 2 1/2 Hours 300 General Ability Test 02 2 1/2 Hours 600 Total 900 • b. The papers in all […]

Eligibility Conditions: * Nationality * Age Limits, Sex and Marital Status * Educational Qualifications Nationality A candidate must either be: • i. a citizen of India , or • ii. a subject of Bhutan , or • iii. a subject of Nepal , or • iv. a Tibetan refugee who came over to India before […]