Cevaplı Hemşirelik giriş sınavları için kimya çalışma kâğıdı

Which of these is a heterogeneous mixture?

1. ASugar dissolved in tea
2. BSalt dissolved in water
3. COil and water
4. DAir

In which state are most metals at room temperature?

1. ALiquid
2. BPlasma
3. CSolid
4. DGas

Which three elements make up carbohydrates?

1. AHydrogen, nitrogen and phosphorus
2. BCarbon, hydrogen and oxygen
3. CCarbon, nitrogen and sulfur
4. DCarbon, hydrogen and nitrogen

Using significant figures, what is 2,5 cm × 3,42 cm?

1. A9 cm²
2. B8,55 cm²
3. C8,6 cm²
4. D8,550 cm²

Oksijen gazı (O₂) molekülünde ne tür bir bağ bulunur?

1. APolar kovalent tek bağ
2. Bİyonik bağ
3. CMetalik bağ
4. DApolar kovalent çift bağ

Nitric acid (HNO₃) reacts with potassium hydroxide (KOH). Which salt forms?

1. APotassium hydride, KH
2. BNitrogen hydroxide, NOH
3. CPotassium nitrite, KNO₂
4. DPotassium nitrate, KNO₃

Which list puts 0,1 M solutions of HCl, acetic acid (CH₃COOH) and NaCl in order of increasing pH?

1. AHCl < CH₃COOH < NaCl
2. BCH₃COOH < HCl < NaCl
3. CHCl < NaCl < CH₃COOH
4. DNaCl < CH₃COOH < HCl

For N₂ + 3H₂ → 2NH₃, 1 mol of N₂ is mixed with 2 mol of H₂. Which reactant is limiting?

1. AN₂, because there is less of it
2. BNeither, because both are used up exactly
3. CH₂, because 1 mol of N₂ would need 3 mol of H₂
4. DNH₃, because it is the product