Atom Facts Notes Questions with Answers PDF Download – Test 315

MCQ 1571: The tiny area in the center of atom is concentrated with mass and is known as:

1. proton
2. neutron
3. electron
4. nucleus

MCQ 1572: In Calcium chloride (CaCl₂), chloride (Cl^-) gains:

1. one electron
2. two electrons
3. three electrons
4. four electrons

MCQ 1573: Plants become more susceptible to diseases and pests because:

1. of acids from the acid rain
2. leaves becoming yellow due to leaching out of nitrogen
3. waxy layer on leaves becoming damaged causing increased transpiration
4. of floods

MCQ 1574: Light weight batteries which produce high voltage are:

1. nickel cadmium cells
2. aluminum air batteries
3. lead(II) sulfate batteries
4. lead(II) oxide batteries

MCQ 1575: The region outside nucleus where electrons (e^-) revolve is called:

1. energy level only
2. quantum shell only
3. bonding level
4. energy level and quantum shell