A hygrometer is used to measure ……? A) Speed of sound B) Density of milk C) Humidity of air D) Specific gravity of liquids
Muslim league was established in 1906. Which city was decided to be its headquarters? A) Delhi B) Bombay C) Lucknow D) Agra
An instrument that measures air pressure is called? A) Lactometer B) Barometer C) Thermometer D) Hydrometer
Which country has the most languages in the world? A) Indonesia B) Papua New Guinea C) Nigeria D) Cambodia