ورقة عمل الكيمياء لامتحانات القبول في التمريض مع الإجابات

What is the SI base unit of mass?

1. AKilogram
2. BPound
3. CNewton
4. DGram

Which acid is found in the stomach?

1. AAcetic acid
2. BHydrochloric acid
3. CSulfuric acid
4. DNitric acid

What is a beta particle?

1. AA helium nucleus with two protons and two neutrons
2. BA neutron that leaves the nucleus
3. CA wave of visible light
4. DA high-energy electron released from a nucleus

Which bond joins amino acids together in a protein?

1. AA peptide bond
2. BAn ionic bond
3. CA hydrogen bond
4. DA glycosidic bond

At 20 °C, about 36 g of NaCl dissolves in 100 g of water. If 50 g of NaCl is stirred into 100 g of water at 20 °C, what happens?

1. AAbout 14 g dissolves and about 36 g stays undissolved
2. BAbout 36 g dissolves and about 14 g stays undissolved
3. CAll 50 g dissolves
4. DNone of the salt dissolves

A bag of 5% (w/v) glucose solution (called 5% dextrose in the US) contains 5 g of glucose per 100 mL. How many grams of glucose are in 1 L?

1. A50 g
2. B0,5 g
3. C500 g
4. D5 g

A scuba diver breathes compressed air deep underwater. Why must the diver breathe out while swimming up to the surface?

1. AThe water gets warmer near the surface
2. BOxygen turns to liquid at the surface
3. CThe air in the lungs shrinks as the outside pressure falls
4. DThe air in the lungs expands as the outside pressure falls

Ammonia (NH₃) has three bonding pairs and one lone pair on nitrogen. What is its shape?

1. ATetrahedral
2. BFlat triangle (trigonal planar)
3. CLinear
4. DTrigonal pyramidal