उत्तरों सहित नर्सिंग प्रवेश परीक्षाओं के लिए रसायन विज्ञान वर्कशीट

कौन-सा पदार्थ क्षार है?

1. Aनींबू का रस (साइट्रिक अम्ल)
2. Bसोडियम हाइड्रॉक्साइड (NaOH)
3. Cसिरका (ऐसीटिक अम्ल)
4. Dहाइड्रोक्लोरिक अम्ल (HCl)

Which of these is a chemical property?

1. AFlammability
2. BDensity
3. CBoiling point
4. DColour

What is the term for anything that has mass and takes up space?

1. AEnergy
2. BMatter
3. CForce
4. DHeat

Water has a high specific heat capacity. How does this help the human body?

1. AIt helps keep body temperature stable
2. BIt allows oxygen to dissolve in water more easily
3. CIt makes the blood more acidic
4. DIt makes water a poor solvent for salts

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

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

What does Avogadro's law state?

1. AOne mole of any gas has a mass of 22.4 g
2. BEqual volumes of gases at the same temperature and pressure contain equal numbers of molecules
3. CThe pressure of a gas doubles when its temperature is halved
4. DEqual masses of all gases contain equal numbers of molecules under any conditions

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. BThe air in the lungs expands as the outside pressure falls
3. CThe air in the lungs shrinks as the outside pressure falls
4. DOxygen turns to liquid at the surface

Under which conditions does a real gas behave least like an ideal gas?

1. ALow pressure and low volume of particles
2. BHigh pressure and low temperature
3. CLow pressure and high temperature
4. DHigh temperature and large container