General Science - Single MCQs (Page 59)

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Q581. Goiter is a disease due to lack of which mineral in diet ?...Q582. Biomass energy is ?...Q583. Which is the longest?...Q584. Which of the following elements was unknown to ancient civilizations?...Q585. Plants get their nitrogen from ?...Q586. The study of poisons is called ?...Q587. Deficiency of iron leads to ?...Q588. Defect of colour blindness can be remedied by the use of ?...Q589. In normal adult human, what is the rate of heartbeat per minute?...Q590. Which of the following planets rotates clock wise?...