A. Beta-rays
B. Alpha-rays
C. X-rays
D. Gamma-rays
Related Mcqs:
- Which of following metals can be displaced by all other metals from its solution ?
A. Ag
B. A
C. Au
D. Cu - Space around nucleus where finding probability of electrons is maximum is called ____________________?
A. Orbital
B. Orbit is elliptical
C. subshell
D. Electron cloud - The atomic number of an element having maximum number of unpaired electrons in p-subshell is_______________?
A. 7
B. 10
C. 12
D. 16 - Which specie has unpaired electrons in antibonding molecular orbitals_______________?
A. O2+2
B. N2-2
C. B2
D. O2-2 - Which one has maximum number of unpaired electrons ?
A. 6X
B. 7Y
C. 9Z
D. 13W - In Galvanic cell electrons flow from anode to cathode through__________________?
A. external electric circuit
B. salt bridge
C. movement of ions
D. all of the above - The specie which donates electrons to central metal atom in coordination sphere is called____________________?
A. anion
B. cation
C. Ligand is positively charged
D. acid - When light is exposed to transition element then electrons jump from lower orbitals to higher orbitals in______________________?
A. orbitals of f-subshell
B. orbitals of d-subshell
C. orbitals of p-subshell
D. both A & B - How many electrons are there in benzene to form delocalized electron cloud________________?
A. 3
B. 4
C. 6
D. 8 - In unsaturated hydrocarbons electrons favour___________________?
A. less reactivity
B. addition reactions
C. substitution reactions
D. none