उत्तरों सहित नर्सिंग प्रवेश परीक्षाओं के लिए रसायन विज्ञान वर्कशीट

What is a cation?

1. AA neutral atom
2. BA negatively charged ion
3. CA molecule with no charge
4. DA positively charged ion

What is the chemical formula of carbon dioxide?

1. ACO
2. BCO₃
3. CC₂O
4. DCO₂

Which state of matter has a fixed volume but takes the shape of its container?

1. AGas
2. BPlasma
3. CLiquid
4. DSolid

अणुगति सिद्धांत के अनुसार तापमान क्या मापता है?

1. Aकणों की औसत गतिज ऊर्जा
2. Bप्रत्येक कण का द्रव्यमान
3. Cकणों की कुल संख्या
4. Dपात्र का आकार

The amino acid glycine has an –NH₂ group and a –COOH group. What are these two groups called?

1. AA carbonyl group and an ester group
2. BA phosphate group and a hydroxyl group
3. CAn amino group and a carboxyl group
4. DA hydroxyl group and a methyl group

In the ideal gas law, PV = nRT, what does n stand for?

1. AThe density of the gas
2. BThe number of moles of gas
3. CThe number of atoms per molecule
4. DThe number of molecules of gas

किसी पदार्थ के 10 g पानी में घुलकर 250 mL विलयन बनाते हैं। g/L में उसकी सांद्रता क्या है?

1. A0.04 g/L
2. B25 g/L
3. C2.5 g/L
4. D40 g/L

Why does food cook faster in a pressure cooker?

1. AThe higher pressure raises the boiling point, so the water is hotter
2. BSteam is trapped, so the water boils at a lower temperature
3. CPressure itself breaks down the food, regardless of temperature
4. DThe higher pressure lowers the boiling point