test no.1, season1 with key and solution
Season:1 Test No: 1 Chapters : phy-1, chem-1, bioloogy,1 Category: Easy , Medium , Hard Total MCQs; 90 1) The number of significant fiures in the measurement of 5.005x 10 -5 s is; a. 2 b. 3 c. 4 d 5 2) The scientific notation of a number 0.0023 is expressed as: A) 2.3 × 10 -3 B) 0.023 × 10 -2 C)2.3 × 10 -4 D) 0.2 × 10 3 3) If 7.635 & 4.81 are two significant numbers, their multiplication in significant digit is (a) 36.72435 (b) 36.724 (c) 36.72 (d) 36.7 4) The number of significan figures in 4.0030 is; (a) Four (b) Five