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Which one among the following is not produced by sound waves in air ?
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Longitudinal waves can't be polarized and sound is a longitudinal waves.
The gas which turns lime water milky is -
Who is the most powerful person globally according to recent Forbes list, 2018?
The Best colours for a sun umbrella will be
Asia’s 1st ‘Blue Flag’ Beaches will Be Developed in which of the following country?
A ray of white light strikes the surface of an object. If all the colours are reflected, the surface would appear.
When an object reflects all the colours of white light, it would appear white. When an object absorb all the colours of white light, it would appear black.
World Environment Day is observed on which of the following date?
The maximum number of electrons in an orbit is-
Which of the following initiative has been launched by the Food Safety and Standards Authority of India (FSSAI) to ensure maximum absorption of Vitamin D in students through natural sunlight?
Which one of the following gases is supporter of combustion ?
Combustion is an oxidation process and this cannot occur without the presence of oxygen.
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