उत्तरों सहित नर्सिंग प्रवेश परीक्षाओं के लिए रसायन विज्ञान वर्कशीट

For a given substance, in which state do its particles move fastest?

1. AGas
2. BThey move at the same speed in all states
3. CSolid
4. DLiquid

Which positive ion is found in the highest concentration inside most body cells?

1. APotassium (K⁺)
2. BMagnesium (Mg²⁺)
3. CSodium (Na⁺)
4. DCalcium (Ca²⁺)

किसी विलयन का pH 3 है। उसे कैसे वर्णित किया जाता है?

1. Aक्षारीय
2. Bअम्लीय
3. Cसंतृप्त
4. Dउदासीन

A reaction has a theoretical yield of 20 g, but only 15 g of product is collected. What is the percent yield?

1. A75%
2. B5%
3. C25%
4. D133%

Oxygen has 8 electrons. What is its electron configuration?

1. A1s² 2p⁶
2. B1s² 2s⁶
3. C1s² 2s² 2p⁶
4. D1s² 2s² 2p⁴

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

1. AIsotonic
2. BHypertonic
3. CHypotonic
4. DSaturated

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 shrinks as the outside pressure falls
3. COxygen turns to liquid at the surface
4. DThe air in the lungs expands as the outside pressure falls

A solution contains 250 mg of a substance in every 5 mL. How many grams of the substance are in 100 mL?

1. A5 g
2. B50 g
3. C0.5 g
4. D5000 g