General Science - Single MCQs (Page 64)

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Q631. What is the unit for measuring the amplitude of a sound?...Q632. Washing soda is the common name for ?...Q633. The gas usually filled in the electric bulb is ?...Q634. The device used for measuring altitudes is ?...Q635. Which soil is suitable for agriculture ?...Q636. Which gas is used for the preparation of Soda water ?...Q637. Deficiency of Iron leads to ?...Q638. Which one of the following is an element ?...Q639. Which planet takes maximum time for a revolution in the Sun?...