Answer: A) Central Government Explanation: Corporation tax is a tax imposed on the net income of the company. Companies, both private and public which are registered in India under the Companies Act 1956, are liable to pay corporate tax. Taxes in India are levied by the Central Government and the state governments. Some minor taxes are also levied by the local authorities such as the Municipality. The authority to levy a tax is derived from the Constitution of India which allocates the power to levy various taxes between the Central and the State.   Hence, Corporate Tax is imposed by Central Government.

Answer: A) Limestone Explanation: Karst is a type of landscape that is characterized by caverns, caves, sinkholes, and underground streams. These features were all caused by erosion of the underlying rock.   Limestone type of rock usually underlies a karst landscape.

Answer: D) 34 Explanation: The given series follows the pattern that, 18, 97, 26, 91, ?, 83 => 18 + 8 = 26 => 97 - 8 = 91 => 26 + 8 = 34 => 91 - 8 = 83 Hence, the missing number is 34.