The instrument which is used to measure the blood pressure is called: Spirometer Barometer Sphygmomanometer None of these
The instrument used to measure the rainfall is: Barometer (Pressure) Hydrometer (Density of Liquid) Nanometer None of these
Which of the following lens are useful in microscope? Convex lens Concave lens Curved lens None of these
Which type of vitamin is useful for human body through Sun? Vitamin B12 Vitamin A Vitamin D None of these
Which instrument is used to measure the oxygen level of the blood? Thermometer Oximeter Spirometer None of these
Which of the following gas is used in Refrigerators for cooling? Methane (CH₄) Ammonia (NH₃) Nitrogen None of these
The waves which are used by the TV remote control are: Infrared waves Radio waves TV waves None of these
