GATE Questions

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Many toxic gases along with water vapour are emitted in vocanic eruptions. All such toxic gases include hydrochloric acid, sulfur dioxide, carbon dioxide, hydrogen sulfide and carbon monoxide. Methane is not produced in the volcanic eruptions.

Metallic bond is a bond between two metal atoms. Here in the given option Hg is the only metal with metallic bond.

Majuli or Majoli is a river island in the Brahmaputra River, Assam and in 2016 it became the first island to be made a district in India.

No work done as there is no external external pressure in free expansion. 

Hence, Work done in a free expansion process is Zero.

20% of 120

20 x 120/100

= 4 x 6

= 24

Hence, 20% of 120 = 24.

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

Violet colour has the highest energy. The higher the frequency, the faster the oscillations and thus the higher the energy. Therefore, the highest-frequency ultra-violet light or the lowest wavelength is violet.

Bicycle is a compound machine in the above given options. A compound machine is a machine that is formed by two or more simple machines.