Goiit - JEE Main & Advanced, BITSAT, MTCET, KCET, SCRA, Entrance Exam Notifications Study Tips, Sample Papers, Experts Advice, IIT JEE forums

Physics
Multiple Choice Question with Only One Choice Correct Fraunhofer lines are due to (a) the diffraction effect of the atmosphere (b) the absorption of sun' s radiation in the earth' s atmosphere (c) the absorption of sun' s radiation in the sun' s atmosphere (d) the characteristic emission of sun' s radiation
Chemistry
Multiple Choice Question Iron is mainly extracted by (a) carbon reduction method (b) self reduction method (c) the method of electrolysis (d) leaching with aqueous solution of NaCN followed by reduction
Mathematics
Multiple Choice Question The equation x²y²- 2xy²- 3y² - 4x² y⁷ + 8xy + 12y = 0 repersents (a) a pair of lines (b) pair of lines and a circle (c) a pair of lines and a parabola (d) four lines forming a square