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Ans: (A)

Solution: Vikram Ambalal Sarabhai was an Indian physicist and astronomer who initiated space research and helped develop nuclear power in India.

He is internationally regarded as the Father of the Indian Space Program.

Ans: (D)

Solution: Teak is a tropical deciduous tree, found largely in MP.

Ans: (d)

Solution: Sound waves is a mechanical wave.

A sound wave moves through air by displacing air particles in a chain reaction. Sound energy, or energy associated with the vibrations created by a vibrating source, requires a medium to travel, which makes sound energy a mechanical wave.

Ans: (b)

Solution: Wheat and Mustard are the examples of parallel cropping. It is a cropping pattern in which multiple crops are grown simultaneously.

Ans: (c)

Solution: Gautam was the founder of Nyaya philosophy. It was based on the systematic development of the theory of logic, methodology, and its treatises on epistemology.

Ans: (C)

Solution: The ozone hole has developed because people have polluted the atmosphere with chemicals containing chlorine and bromine. The primary chemicals involved are chlorofluorocarbons (CFCs for short), halons, and carbon tetrachloride.