Cevaplı Hemşirelik giriş sınavları için kimya çalışma kâğıdı

Apart from mercury, which element is a liquid at room temperature?

1. AIodine
2. BSodium
3. CChlorine
4. DBromine

What causes the pressure of a gas in a container?

1. AGas particles sticking to the walls
2. BThe weight of the container pressing on the gas inside
3. CGas particles colliding with the container walls
4. DGas particles stopping and pushing outward

Hangi madde bir bazdır?

1. ASirke (asetik asit)
2. BSodyum hidroksit (NaOH)
3. CLimon suyu (sitrik asit)
4. DHidroklorik asit (HCl)

A plastic block has a density of 0,8 g/cm³. What happens when it is placed in water (density 1,0 g/cm³)?

1. AIt dissolves
2. BIt sinks
3. CIt floats
4. DIt stays suspended halfway down

Why is a carbon dioxide extinguisher effective on many fires?

1. ACO₂ adds oxygen to cool the flames
2. BCO₂ is denser than air and pushes oxygen away from the fire
3. CCO₂ is a liquid that soaks into the fuel
4. DCO₂ reacts chemically with the fuel to make it non-flammable

During digestion, large molecules are broken down by adding water across their bonds. What is this reaction called?

1. AHydrolysis
2. BCombustion
3. CCondensation
4. DPolymerisation

Yağ neden suda çözünmez?

1. ASu, hiçbir şeyle karışamayacak kadar yoğundur
2. BYağ molekülleri yüklü iyonlardır
3. CYağ apolar, su kutupludur ve "benzer benzeri çözer"
4. DYağ suyla tepkimeye girerek bir katı oluşturur

Starch and cellulose are both made entirely of glucose units, yet humans can digest starch but not cellulose. Why?

1. AThe glucose units are linked differently, and humans lack an enzyme to break cellulose's links
2. BStarch contains nitrogen, which makes it easier to digest
3. CCellulose is really made of amino acids, not glucose, so stomach acid cannot break it
4. DCellulose dissolves in water, so it is lost from the gut