1. Which is called ‘Palmfern’?
A. PterisB. RicciaC. GnetumD. Cycas
2. Which one of the following is an example of isoelectronic system?
A. N2O, COB. CO, CN −C. CO2, N2D. CN −, N2O
3. Same number of electrons exist in the last shell of which atoms?
A. C, MgB. H, SiC. He, CaD. O, N
4. Atomic radius of which of the following electronic configuration’s element is the lowest?
A. 1s2 2s2 2p1B. 1s2 2s2C. 1s2 2s1D. 1s2 2s2 2p2
5. Solubility of will be maximum in which of the following solution? CaC2O4
A. 0.1M H2SO4B. 0.1M HClC. 0.1M NaOHD. 0.1M H2CO3
6. From person possessing which blood group can O blood group recipient receive blood?
A. ABB. BC. OD. A