GATE Questions

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True, the carbon in the ocean originates from the atmosphere. The oceanic surface water absorbs the carbon dioxide gas from the atmosphere and dissolves in it.

An ionic bond is a chemical bond between two atoms in which one atom seems to donate its electron to another atom.

Here in the given compounds, the compound that contains ionic bond is CaO, Calcium oxide.

Mooring buoy are white with a blue horizontal band. They usually are placed in marinas and other areas where boats are allowed to anchor. These are the only buoys you may tie up to legally.

Compound word means when two or more words join together to make a single word that gives a new meaning.

Here in the options, Self-evident is the compound word.

Fat is completely digested in the small intestine of the body.

Footsteps. 

Yes, as you walk forward, you will leave the footstep behind you.

Photoautotrophs are those organisms that can make their own food using sun light with the help of the process of photosynthesis.

Plants can prepare their own food using sunlight. Hence they are Photoautotrophs.