Cevaplı Hemşirelik giriş sınavları için kimya çalışma kâğıdı

How many moles of oxygen atoms are in 1 mole of carbon dioxide, CO₂?

1. A3
2. B1
3. C2
4. D0,5

AB → A + B tepkimesi hangi tür tepkimeyi gösterir?

1. AÇift yer değiştirme tepkimesi
2. BNötrleşme tepkimesi
3. CAyrışma tepkimesi
4. DBirleşme (sentez) tepkimesi

Periyodik tablonun dikey sütununa ne denir?

1. ASeri
2. BGrup
3. CKabuk
4. DPeriyot

Nitrogen is in group 15 of the periodic table. How many valence electrons does a nitrogen atom have?

1. A3
2. B7
3. C15
4. D5

What does Avogadro's law state?

1. AEqual masses of all gases contain equal numbers of molecules under any conditions
2. BOne mole of any gas has a mass of 22,4 g
3. CEqual volumes of gases at the same temperature and pressure contain equal numbers of molecules
4. DThe pressure of a gas doubles when its temperature is halved

Why does keeping food in a refrigerator slow down spoilage?

1. ALower temperatures raise the activation energy of every reaction
2. BCold air contains no oxygen
3. CLower temperatures slow down chemical and microbial reactions
4. DCold temperatures add preservatives to the food

Which approach best reduces a health worker's exposure to ionising radiation?

1. ALimit the time near the source, increase the distance and use shielding
2. BStand closer to the source so the job is finished sooner and exposure is shorter
3. CWork faster without any shielding
4. DRely only on wearing gloves

Why is incomplete combustion of fuel in a poorly ventilated room dangerous?

1. AIt produces carbon monoxide, which binds to haemoglobin and blocks oxygen transport
2. BIt produces extra oxygen, which damages the lining of the lungs over time
3. CIt produces water vapour, which is toxic
4. DIt produces nitrogen, which replaces oxygen in the blood