उत्तरों सहित नर्सिंग प्रवेश परीक्षाओं के लिए रसायन विज्ञान वर्कशीट

Charles's law describes the relationship between which two properties of a gas, at constant pressure?

1. APressure and number of moles
2. BVolume and temperature
3. CPressure and volume
4. DDensity and mass

Which method separates two liquids with different boiling points, such as alcohol and water?

1. ADistillation
2. BSieving
3. CFiltration
4. DUsing a magnet

Where do the mole ratios used in stoichiometry come from?

1. AThe physical states of the substances
2. BThe subscripts in each formula
3. CThe coefficients of the balanced equation
4. DThe molar masses of the reactants

How many grams are in 2.5 kg?

1. A2500 g
2. B25 g
3. C250 g
4. D0.0025 g

उत्कृष्ट गैसें शायद ही कभी अभिक्रिया क्यों करती हैं?

1. Aवे सब रेडियोधर्मी होती हैं
2. Bउनके परमाणु अन्य परमाणुओं से बहुत बड़े होते हैं
3. Cउनमें कोई इलेक्ट्रॉन होते ही नहीं
4. Dउनके बाहरी इलेक्ट्रॉन कोश पहले से भरे होते हैं

Why does the vapour pressure of a liquid increase as it is heated?

1. AThe molecules become heavier and press harder on the surface
2. BMore molecules have enough energy to escape into the gas phase
3. CThe liquid's volume decreases and squeezes out vapour
4. DThe attractions between the molecules become stronger

2 M विलयन के 300 mL बनाने के लिए 6 M स्टॉक विलयन का कितना आयतन चाहिए?

1. A900 mL
2. B150 mL
3. C50 mL
4. D100 mL

A solution has a hydroxide ion concentration of 1 × 10⁻³ mol/L. What is its pH at 25 °C?

1. A7
2. B11
3. C3
4. D14