Question
The device that uses ultrasonic waves to measure the
distance, direction and speed of underwater objects is called:Solution
The device which uses ultrasonic waves to measure the distance, direction and speed of underwater objects is known as SONAR. SONAR stands for Sound Navigation and Ranging. SONAR is helpful for exploring and mapping the ocean because sound waves travel faster in water than that in air.
The Agricultural Produce (Grading and Marketing) Act was passed in which year?Â
Which of the following property of soil is not influenced by tillage operations?
Who developed Hydrogen Bomb?
…………………. is used as a prime mover for active tools and stationary farm operationsÂ
At what moisture content do seeds generally maintain germination for one year under normal warehouse conditions?
A common biocontrol agent used to control plant diseases is ____
Father of zero tillage is
The disease related with apple is known as
Blue color seed tag indicates which class of seeds?
The state where less than 500 mm annual rainfall is obtained
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