Who invented first working laser?
1). A. H. Taylor
2). W. K. Roentgen
3). T. H. Maiman
4). Fred Morrission
NITI Aayog has been formed to replace which of the following institution?
1). Planning Commission
2). IRDA
3). Department of Telecommunications (DoT)
4). Department of Information Technology
Which of the following is not a component of Smog?
1). Volatile organic compounds
2). Nitrogen Oxide
3). Sulphur dioxide
4). Chlorine oxide
Which amongst the following is not a Cation?
1). Aluminium ion
2). Copper ion
3). Sulphate ion
4). Zinc ion
Rusting is _____.
1). Electrolysis
2). Oxidation
3). Redox reaction (Oxidation and Reduction)
4). Reduction