ใบงาน เคมีสำหรับข้อสอบเข้าพยาบาล พร้อมเฉลย

Which element is a metalloid?

1. ASodium
2. BArgon
3. CSilicon
4. DSulfur

แก๊สใดเป็นองค์ประกอบส่วนใหญ่ของอากาศบนโลก

1. Aคาร์บอนไดออกไซด์
2. Bออกซิเจน
3. Cไฮโดรเจน
4. Dไนโตรเจน

ที่ระดับน้ำทะเล น้ำบริสุทธิ์เดือดที่อุณหภูมิเท่าใด

1. A0 °C (32 °F)
2. B37 °C (98.6 °F)
3. C100 °C (212 °F)
4. D50 °C (122 °F)

Which nuclear process powers the Sun?

1. ACombustion of hydrogen gas with oxygen in its core
2. BFission of uranium into smaller nuclei
3. CFusion of hydrogen nuclei to form helium
4. DAlpha decay of helium

In a closed container, 10 g of substance A reacts completely with 5 g of substance B. What is the total mass of the products?

1. A15 g
2. B50 g
3. C5 g
4. D10 g

Normal saline (0.9% NaCl) is used for IV fluids. How is it described compared with blood?

1. ASaturated
2. BHypertonic
3. CHypotonic
4. DIsotonic

Half-normal saline (0.45% NaCl) is compared with blood plasma, which has about the same concentration as 0.9% NaCl. How is 0.45% NaCl described, and what happens to red blood cells placed in it?

1. AHypertonic; salt moves into the cells, which then swell
2. BHypertonic; water tends to move out of the cells, which shrink
3. CHypotonic; water tends to move into the cells, which swell
4. DIsotonic; water moves equally in and out, so the cells keep their shape

How much water must be added to 50 mL of a 10% solution to make a 2% solution?

1. A200 mL
2. B40 mL
3. C100 mL
4. D250 mL