Who among the following in the current Chief Election Commissioner (CEC) of India?
1). KG Balakrishnan
2). Ranjit Sinha
3). Montek Singh Ahluwalia
4). VS Sampath
1. Man perceives sound vibrations in the frequency ranges of
2. In a railway track, two rails are joined end to end with a gap in between them because
3. Which of the following has got more heat capacity ?
5. The purpose of choke in a fluorescent lamp is :
6. Electron microscope works on which of the following principles?