Cevaplı Hemşirelik giriş sınavları için kimya çalışma kâğıdı

How many electrons are shared in a double covalent bond?

1. A4
2. B8
3. C6
4. D2

According to the Arrhenius definition, what does a base produce in water?

1. AChloride ions (Cl⁻)
2. BHydroxide ions (OH⁻)
3. CCarbonate ions (CO₃²⁻)
4. DHydrogen ions (H⁺)

What is an unsaturated solution?

1. AA solution with no solute at all
2. BA solution with undissolved solid at the bottom
3. CA solution that holds the maximum possible solute
4. DA solution that can still dissolve more solute

When a nucleus emits an alpha particle, how do its mass number and atomic number change?

1. AMass number falls by 4 and atomic number falls by 2
2. BMass number stays the same and atomic number rises by 1
3. CNeither changes
4. DMass number falls by 2 and atomic number falls by 4

Which type of radiation can be stopped by a sheet of paper?

1. AAlpha particles
2. BGamma rays
3. CBeta particles (fast electrons)
4. DX-rays

How many molecules are in 2 mol of carbon dioxide?

1. A2,00 × 10²³
2. B1,20 × 10²⁴
3. C3,01 × 10²³
4. D6,02 × 10²³

Water is split as 2H₂O → 2H₂ + O₂. What volume of O₂ at STP (0 °C and 1 atm) forms from 2 mol of water?

1. A44,8 L
2. B11,2 L
3. C67,2 L
4. D22,4 L

What is the net ionic equation for the neutralisation of any strong acid by any strong base?

1. AH⁺ + Cl⁻ → HCl
2. BNa⁺ + Cl⁻ → NaCl
3. CH⁺ + OH⁻ → H₂O
4. DH₂ + O₂ → H₂O₂