Proton and Nucleon Number Quiz PDF: Questions and Answers - 139

MCQ 691: If nucleon and neutron numbers are 27 and 14 respectively, the number of electrons will be

1. 12
2. 18
3. 13
4. 15

MCQ 692: Hydrogen Sulfate (H₂SO₄) has

1. positive charge
2. negative charge
3. double negative charge
4. double positive charge

MCQ 693: What is correct about lighter gases?

1. they may be collected through downward delivery
2. they may be collected by upward displacement of air
3. they are dried through conc. H₂SO₄
4. they are dried through dilute H₂SO₄

MCQ 694: If nucleon number of fluorine is 19, proton number will be

1. 7
2. 15
3. 18
4. 19

MCQ 695: Ions are held together through

1. physical attraction among electrons
2. high kinetic energies of electrons
3. electro-static attraction between ions
4. static attraction between ions